Climate and monthly weather forecastDenver, CO
Climate and monthly weather forecast
The climate of Denver
The city of Denver in Colorado, USA is perched in the mid-latitude steppe, resulting in a classic BSk Köppen climate. The representation of this compelling geographical positioning manifests in its intriguing weather patterns that can fluctuate significantly throughout the year. Seasonal transitions are quite noticeable with monthly averages pointing to clear climatic shifts.Temperatures in Denver display a broad range with the lowest average dip being 20.7°F (-6.3°C) in December and January, followed closely by February's 20.8°F (-6.2°C). This chilly spell gains momentum and peaks during the summer months with June, July, and August boasting comfortingly warm figures ranging from 81°F (27.2°C) to the highest at 84.4°F (29.1°C). The remainder of the year maintains a moderate hold on temperature, with the autumn months of September, October, and November ushering in a gentle decline in heat down to 61.3°F (16.3°C), 50.7°F (10.4°C), and 39.9°F (4.4°C) respectively.
When observing Denver's relative humidity, a fairly high concentration was noted during winter with December and January seeing 61% and 64% respectively. Spring brings a big turnaround with March and April recording the year's lowest figures at 55% and 52%, while summer and autumn months maintain the trend with relative humidity lingering between 41% and 47%.
On the precipitation front, torrential downpours are more prevalent from April to June with the town receiving substantial rainfall, increasing from 1.42" (36mm) in April to a high of 2.36" (60mm) in May. The month with the least rainfall is December with a meager 0.39" (10mm).
Another prominent feature about Denver's weather is its sunny disposition. Even in the shorter daylight months of December and January, the city experiences an average of 7.1 hours of sunshine. The amount of sunshine per day peaks between May to August with the sun-filled hours soaring to a high of 11.8.
The best time to visit Denver
Tourists seeking to enjoy Denver's amiable weather patterns would find the city most welcoming between June to August. With temperatures reaching a comfortable high between 81°F (27.2°C) and 84.4°F (29.1°C) and the relative humidity levels being quite low from 41% to 44%, this period offers pleasant conditions for outdoor activities. Visitors are also primed to bask in an average of 11.8 hours of sunshine, which is the maximum for the year. Although June is the wettest month with rainfall of 2.36" (60mm), Denver's robust sunshine hours ensure weather disruptions are minimal.The worst time to visit Denver
Travellers may find the frigid weather from December to February rather challenging. The mercury dips to a yearly low with the average temperature plunging to 20.7°F (-6.3°C) in December and January, which escalates to a slightly warmer 20.8°F (-6.2°C) in February. High relative humidity at 61% and 64% during these months further intensifies the cold, making it less inviting for visitors. Furthermore, the shorter daylight hours during this period along with incessant snowfall of up to 6.26" (159mm) in March can deter sightseeing activities.Spring weather in Denver
The city's spring months of March, April, and May witness an invigorating shift in weather conditions. Starting from a chilly 29.7°F (-1.3°C) in March, the temperature steadily ascends reaching 42.4°F (5.8°C) in May. However, spring also brings along increased levels of rainfall, culminating in May with a high of 2.36" (60mm). The increase in daylight hours reaching up to 14.4 in May is another defining characteristic of spring in Denver.Summer weather in Denver
Denver's summers from June to August are enticing with temperatures gently swaying between an inviting 81°F (27.2°C) and 84.4°F (29.1°C). But despite the warmth, the relative humidity remains comfortably low, hovering around 41% to 44%. With an enviable average of 11.8 hours of sunshine and limited rainfall, these months undoubtedly present the most favourable weather conditions in Denver.Autumn weather in Denver
The autumn months of September to November welcome a gradual decrease in temperature, with the average sliding from 76.6°F (24.8°C) in September down to a cooler 39.9°F (4.4°C) in November. Although the relative humidity begins to rise during this period, it stays within a moderate range between 43% and 52%. The month of September glorifies the city with a peak annual low of 0.71" (18mm) of rainfall, making it an ideal period for outdoor exploration.Winter weather in Denver
With winter setting in, December to February is notably frigid with temperatures progressively slipping down to an average of 20.7°F (-6.3°C) in December and January. Factoring in the heightened relative humidity levels that hover around 61% to 64%, the chill intensifies substantially. Despite enduring heavier rainfall, the city still welcomes an average of 7.1 hours of sunshine per day, providing some respite from the chill. Despite the challenging conditions, winter sports enthusiasts might find this season most appealing.Weather in January
The weather in Denver, Colorado begins the year with winter-like conditions and typically experiences relatively mild temperatures compared to its neighbouring regions situated at similar latitudes. Noticeable periods of sunshine span over twenty-two days each month, offering moderately clear skies and opportunities for outdoor activities despite the brisk conditions. Weather in January »Weather in February
Denver's February weather exhibits less fluctuation than its predecessor, revealing a gradual increase in daylight hours, indicating the onset of spring. The contrast from January is evident, most notably with snowfall elevating to 5.94" (151mm). Weather in February »Weather in March
Denver's weather transitions into a new phase as it enters March. Showing signs of spring, March reveals a marginal rise in temperature, specifically with a high climbing to 51.4°F (10.8°C), indicating a shift from the cold winter days of February. Weather in March »Weather in April
Denver's April brings a significant change in the city's weather profile. The mercury level rises, reaching an average high of 57.2°F (14°C), which stimulates the region's flora and fauna after a long winter dormancy. Weather in April »Weather in May
As Denver steps into May, the city embraces clear signs of spring and lays down the groundwork for the sweltering heat of the impending summer. With an average high soaring up to 65.8°F (18.8°C), May indicates a considerable shift from the chills of April, encapsulating the biggest upward temperature trend of the year. Weather in May »Weather in June
Denver's June weather showcases the arrival of summer, notable for its prolonged daylight hours and enhanced sunshine days. The month's core characteristic is its average high temperature reaching 81°F (27.2°C), which is a massive leap from May's mild temperature. Weather in June »Weather in July
Denver's July marks the peak of summer with warm temperatures and ample sunshine brightening the city's weather scenario. The spotlight of July falls on its temperature, hitting the year's highest mark with an average high of 84.4°F (29.1°C). Weather in July »Weather in August
Denver's August closely follows July, persisting with similar summer weather patterns. August's temperature maintains high marks, with a slight decrease in the average high temperature to 83.1°F (28.4°C), assuring prolonged summer activities. Weather in August »Weather in September
As Denver transitions into September, the city experiences a gradual change in its weather outlook. No longer peaking at summer highs, the temperature in September moderately decreases with an average high placed at 76.6°F (24.8°C). Weather in September »Weather in October
Denver's October brings a noticeable shift in weather with shorter days accompanied by cooler temperatures. Compared to September, October sees a notable dip in the temperature with an average high falling to 61.3°F (16.3°C), signifying the onset of the cooler season. Weather in October »Weather in November
As Denver welcomes November, the city transitions into more pronounced autumnal weather. Building upon the cooling trend from October, the temperature sees a plunge with an average high lowering to 50.7°F (10.4°C). Weather in November »Weather in December
Denoting the arrival of winter, Denver's December weather signifies a significant transition from the mild autumn temperatures of November. The average high drops notably to 39.9°F (4.4°C), bringing back the winter chill. As the shortest daylight hours of the year take effect, December hosts diverse winter activities due to the 3.31" (84mm) of snowfall. Weather in December »Updated: Feb 10, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The months with the least rainfall in Denver, Colorado, are January and December Rain falls for 3.7 days and accumulates 0.39" (10mm) of rain.
Throughout the year, there are 119.5 rainfall days, and 12.95" (329mm) of precipitation is accumulated.
Months with snowfall in Denver, Colorado, are January through May, October through December.
In Denver, Colorado, during the entire year, snow falls for 43.5 days and aggregates up to 35.67" (906mm) of snow.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Denver, Colorado.
February is the most humid month in Denver, Colorado, with an average relative humidity of 66%.
February has the least sunshine of the year in Denver, with an average of 6.9h of sunshine.
The month with the most snowfall in Denver, Colorado, is March, when snow falls for 6.7 days and typically aggregates up to 6.26" (159mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Denver, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.
May is the month with the most rainfall in Denver. Rain falls for 18.2 days and accumulates 2.36" (60mm) of precipitation.
With an average relative humidity of 41%, June is the least humid month.
June through September are months without snowfall in Denver.
June has the longest days of the year, with an average of 14h and 54min of daylight.
The months with the most sunshine are June through August, with an average of 11.8h of sunshine.
June and July, with an average maximum UV index of 6, are months with the highest UV index.
Denver's temperatures tend to reach their peak averages in July, with a high of 84.4°F (29.1°C) and a low of 59.2°F (15.1°C).
The coldest month in Denver is December, with an average high-temperature of 39.9°F (4.4°C) and an average low-temperature of 20.7°F (-6.3°C).
The month with the shortest days is December, with an average of 9h and 24min of daylight.
Average temperature
Denver, CO
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (39.9°F).
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).
Average pressure
Denver, CO
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30"Hg - Average pressure in April:
29.91"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
30.01"Hg - Average pressure in August:
30.01"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is April (29.91"Hg).
Average wind speed
Denver, CO
- Average wind speed in January:
6.2mph - Average wind speed in February:
6.2mph - Average wind speed in March:
6.5mph - Average wind speed in April:
6.6mph - Average wind speed in May:
5.9mph - Average wind speed in June:
6.1mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.7mph - Average wind speed in September:
5.7mph - Average wind speed in October:
5.8mph - Average wind speed in November:
6mph - Average wind speed in December:
5.8mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest months (with the lowest average wind speed) are August and September (5.7mph).
Average humidity
Denver, CO
The month with the highest relative humidity is February (66%).
The month with the lowest relative humidity is June (41%).
Average rainfall
Denver, CO
- Average rainfall in January:
0.39" - Average rainfall in February:
0.75" - Average rainfall in March:
1.26" - Average rainfall in April:
1.42" - Average rainfall in May:
2.36" - Average rainfall in June:
1.34"
- Average rainfall in July:
1.85" - Average rainfall in August:
1.1" - Average rainfall in September:
0.71" - Average rainfall in October:
0.79" - Average rainfall in November:
0.59" - Average rainfall in December:
0.39"
The wettest month (with the highest rainfall) is May (2.36").
The driest months (with the least rainfall) are January and December (0.39").
Average rainfall days
Denver, CO
- Average rainfall days in January:
3.7 days - Average rainfall days in February:
4.3 days - Average rainfall days in March:
9.3 days - Average rainfall days in April:
12.3 days - Average rainfall days in May:
18.2 days - Average rainfall days in June:
13.9 days
- Average rainfall days in July:
18.4 days - Average rainfall days in August:
15.1 days - Average rainfall days in September:
9.5 days - Average rainfall days in October:
6.1 days - Average rainfall days in November:
4.4 days - Average rainfall days in December:
4.3 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is January (3.7 days).
Average snowfall
Denver, CO
- Average snowfall in January:
3.03" - Average snowfall in February:
5.94" - Average snowfall in March:
6.26" - Average snowfall in April:
6.22" - Average snowfall in May:
2.72" - Average snowfall in June:
0"
The month with the highest snowfall is March (6.26").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Denver, CO
- Average snowfall days in January:
6.3 days - Average snowfall days in February:
9.3 days - Average snowfall days in March:
6.7 days - Average snowfall days in April:
4.8 days - Average snowfall days in May:
1.8 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.1 days - Average snowfall days in October:
2.8 days - Average snowfall days in November:
4.7 days - Average snowfall days in December:
7 days
The month with the highest number of snowfall days is February (9.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Denver, CO
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
7h and 6min - Average sunshine in February:
6h and 54min - Average sunshine in March:
9h and 6min - Average sunshine in April:
10h and 48min - Average sunshine in May:
11h and 12min - Average sunshine in June:
11h and 48min
- Average sunshine in July:
11h and 48min - Average sunshine in August:
11h and 48min - Average sunshine in September:
11h and 6min - Average sunshine in October:
7h and 24min - Average sunshine in November:
7h and 18min - Average sunshine in December:
7h and 6min
The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 54min).
Average sunshine days
Denver, CO
- Average sunshine days in January:
22.7 days - Average sunshine days in February:
16.7 days - Average sunshine days in March:
16.6 days - Average sunshine days in April:
11.8 days - Average sunshine days in May:
9.1 days - Average sunshine days in June:
10.7 days
- Average sunshine days in July:
5.6 days - Average sunshine days in August:
8.8 days - Average sunshine days in September:
14.9 days - Average sunshine days in October:
20.7 days - Average sunshine days in November:
23 days - Average sunshine days in December:
22.4 days
The month with the most sunshine days is November (23 days).
The month with the least sunshine days is July (5.6 days).
Average UV index
Denver, CO
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Denver, CO
The month with the most cloud cover is April (Cloud cover 26).
The month with the least cloud cover is September (Cloud cover 15).
Average visibility
Denver, CO
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
