Climate and monthly weather forecastDelta Junction, AK
Climate and monthly weather forecast
The climate of Delta Junction
Situated in the interior region of Alaska, USA, Delta Junction experiences climates under the Köppen classification, Dfc. This signifies independent weather patterns associated with severe winters, no dry season, and cooler summers. Dfc climates typically represent subarctic zones.Glancing through the climate and weather records, it becomes evident that Delta Junction averages temperature highs ranging from a frigid 5.4°F (-14.8°C) in January to a mild 69.8°F (21°C) in July. Temperatures, however, can plummet dramatically to as low as -5.8°F (-21°C) in December, indicating the severity of the winter season.
Humidity levels stay moderately high, with peaks in April and minor reductions from May to November. Rainfall is fairly spread throughout the year, with the bulk of it accumulating from June to August. On average, Delta Junction receives up to 1.57" (40mm) of rainfall in August.
Snowy conditions take precedence from November to April, peaking in March with 2.99" (76mm). Average daylight hours fluctuate significantly between the summer and winter. The mid-year months from May to July bask in more than 18.5 hours of daylight, shrinking drastically to just 4.4 hours in December.
The best time to visit Delta Junction
With optimum weather conditions and abundant sunshine, summer emerges as the ideal time to visit Delta Junction. May to July records the highest average temperatures, with July experiencing the annual peak at 69.8°F (21°C); however, it's also equally delightful in the month of June. These months also entail longer daylight hours and lower humidities, which promote better out-of-door leisure experiences.The worst time to visit Delta Junction
Harsh winter conditions from November to February present an unfavorable period for traveling to Delta Junction. During these months, not only do temperatures frequently fall into the negative territory, but daylight is significantly scarce, only lasting up to a mere 6.5 hours at best, greatly reducing the amount of time available for outdoor activities.Spring weather in Delta Junction
March initiates the beginning of Spring in Delta Junction, offering gradually warmer temperatures that range from 21.6°F (-5.8°C) to 38.3°F (3.5°C) in April. However, it's still relatively chilly, and snowfall remains an enduring element, reaching up to an average of 2.36" (60mm) in April. Rainfall also becomes more frequent going into May, nonetheless, it should not significantly dampen the overall experience during this season.Summer weather in Delta Junction
Summer reigns from June to August, providing the most pleasant climate for exploring and admiring the natural beauty of Delta Junction's landscapes. Amiable temperatures, peaking at 69.8°F (21°C) in July, combined with nearly non-existent snowfall and the lightest wind speeds of the year, make this season a visitor’s delight.Autumn weather in Delta Junction
September and October denote the autumn season in Delta Junction. Despite the decreasing daylight hours and the sudden drop in temperature, the climate remains tolerable, with September's day temperature averaging at 53.6°F (12°C) and dipping to 35.8°F (2.1°C) by October. Rainfall amounts decrease by October, and while snowfall does commence again, it's typically bearable.Winter weather in Delta Junction
Marked by sub-freezing temperatures and frequent snowfall, winters in Delta Junction span from November to February. Visitors should prepare for the bitter cold as temperatures can drop to as low as -5.8°F (-21°C) in December and January, while snowfall is prevalent and reaches up to 2.72" (69mm) in December. Furthermore, harsh winds with gusts reaching up to 10.6mph (17.1km/h) make the already chilling conditions even more severe during this period.Weather in January
Venturing into the start of the year, Delta Junction experiences low temperatures and a considerable amount of snowfall. The temperature fluctuates from a high of 5.4°F (-14.8°C) to a chilling low of -5.8°F (-21°C). This is also the time of year when the city records the second highest number of snowfall days. Weather in January »Weather in February
February sees a slight increase in temperature, hinting at the impending arrival of spring. Noticeably, the maximum wind speed recorded this month is 6mph (9.7km/h), the first of two peak values for the year. The snow persists, with 8.7 days of snowfall, the highest for the year. Weather in February »Weather in March
As March commences, weather patterns start exhibiting a clear shift towards spring-like conditions. The maximum temperature is nearly twice as high as February, bringing a bit more warmth to the town. The daylight hours rapidly increase to 11.9 hours daily, hinting at the longer days ahead. Weather in March »Weather in April
April brings further relief to Delta Junction as the harsh winter conditions start to recede. The highest temperature recorded in April noticeably spikes to 38.3°F (3.5°C), a clear departure from the preceding winter months. The rapid decrease in snowfall days is evident, decreasing to 5.6 days. Weather in April »Weather in May
May in Delta Junction is a pleasure to experience with the temperature highs touching 57.9°F (14.4°C) and a tangible decrease in snowfall. In fact, May takes the mantle of being the first month of the year without any snowfall days. Weather in May »Weather in June
June brings the most highly-anticipated weather conditions for the residents of Delta Junction. Although the average temperature high hovers around 67.6°F (19.8°C), June outshines all other months with the longest daylight hours, reaching 20.8 hours. Weather in June »Weather in July
July carries forward the summer momentum, offering a weather-friendly environment in Delta Junction. The highest average temperature for the year is recorded at 69.8°F (21°C), making it the hottest month. Rainfall days increase to 11.3 days, the second highest in the year. Weather in July »Weather in August
Entering August, Delta Junction begins transitioning from summer highs into the cooler autumn temperatures. The temperature range starts to drop, with the highs averaging at around 64.4°F (18°C). A notable characteristic of August is its record rainfall amount of 1.57" (40mm), making it the wettest month of the year. Weather in August »Weather in September
September in Delta Junction marks the change of seasons, as the landscape begins to don the colors of Fall. Cooler temperatures start to seep in, with the highest average recorded around 53.6°F (12°C). Interestingly, September witnesses the resurgence of snowfall, after a hiatus that lasted the entire summer. Weather in September »Weather in October
October ushers in the chilly weather and elevated snowfall that characterize winter in Delta Junction. The highest average temperature drops down to 35.8°F (2.1°C). A noticeable increase in snowfall days to 4.5, and a dip in daylight hours to 9.7, highlight the progression towards winter. Weather in October »Weather in November
November sees Delta Junction well into its winter season with low temperatures and heavy snowfall. An extreme low temperature of 4.1°F (-15.5°C) marks the onset of truly chilly weather. The uptick in the number of snowfall days to 9.6, the second highest of the year, becomes a characteristic feature of this month. Weather in November »Weather in December
December comes with the coldest temperature averages ranging between a chilly 9.1°F (-12.7°C) to an even colder -1.5°F (-18.6°C). Coupled with this, the extended snowfall under the diminishing daylight hours of only 4.4, gives a distinct winter wonderland feel to Delta Junction. Weather in December »Updated: Jun 3, 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
January, with its high-temperature average of 5.4°F (-14.8°C) and a low-temperature average of -5.8°F (-21°C), is the coldest month.
Throughout the year, there are 70.4 rainfall days, and 7.56" (192mm) of precipitation is accumulated.
January through May, August through December are months with snowfall.
Throughout the year, there are 56.2 snowfall days, and 18.66" (474mm) of snow is accumulated.
The months with the lowest UV index are January through March, September through December, with an average maximum UV index of 2.
The month with the least rainfall is February, when the rain falls for 2.3 days and typically collects 0.24" (6mm) of precipitation.
March is the most humid month, with an average relative humidity of 88%.
The months with the most snowfall are March and October, with an average 2.99" (76mm) of accumulated snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from AKST to AKDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from AKDT to AKST.
May is the least humid month, with an average relative humidity of 51%.
June and July are months without snowfall.
The month with the longest days is June, with an average of 20h and 48min of daylight.
June has the most sunshine of the year, with an average of 13.4h of sunshine.
The months with the highest UV index are June and July, with an average maximum UV index of 5.
Delta Junction's temperatures tend to reach their peak averages in July, with a high of 69.8°F (21°C) and a low of 50.5°F (10.3°C).
The month with the most rainfall is August, when the rain falls for 12.3 days and typically aggregates up to 1.57" (40mm) of precipitation.
With an average of 4h and 24min of daylight, December has the shortest days of the year.
December has the least sunshine of the year, with an average of 2.3h of sunshine.
Average temperature
Delta Junction, AK
The warmest month (with the highest average high temperature) is July (69.8°F).
The month with the lowest average high temperature is January (5.4°F).
The month with the highest average low temperature is July (50.5°F).
The coldest month (with the lowest average low temperature) is January (-5.8°F).
Average pressure
Delta Junction, AK
- Average pressure in January:
29.92"Hg - Average pressure in February:
29.97"Hg - Average pressure in March:
29.91"Hg - Average pressure in April:
29.86"Hg - Average pressure in May:
29.89"Hg - Average pressure in June:
29.83"Hg
- Average pressure in July:
29.9"Hg - Average pressure in August:
29.84"Hg - Average pressure in September:
29.77"Hg - Average pressure in October:
29.79"Hg - Average pressure in November:
29.85"Hg - Average pressure in December:
29.85"Hg
The month with the highest atmospheric pressure is February (29.97"Hg).
The month with the lowest atmospheric pressure is September (29.77"Hg).
Average wind speed
Delta Junction, AK
- Average wind speed in January:
5.3mph - Average wind speed in February:
5.6mph - Average wind speed in March:
5.1mph - Average wind speed in April:
5.4mph - Average wind speed in May:
5.8mph - Average wind speed in June:
5.2mph
- Average wind speed in July:
5.2mph - Average wind speed in August:
5mph - Average wind speed in September:
5.3mph - Average wind speed in October:
5.2mph - Average wind speed in November:
4.9mph - Average wind speed in December:
5.3mph
The windiest month (with the highest average wind speed) is May (5.8mph).
The calmest month (with the lowest average wind speed) is November (4.9mph).
Average humidity
Delta Junction, AK
The month with the highest relative humidity is March (88%).
The month with the lowest relative humidity is May (51%).
Average rainfall
Delta Junction, AK
- Average rainfall in January:
0.28" - Average rainfall in February:
0.24" - Average rainfall in March:
0.39" - Average rainfall in April:
0.43" - Average rainfall in May:
0.55" - Average rainfall in June:
1.22"
- Average rainfall in July:
1.06" - Average rainfall in August:
1.57" - Average rainfall in September:
0.59" - Average rainfall in October:
0.55" - Average rainfall in November:
0.35" - Average rainfall in December:
0.31"
The wettest month (with the highest rainfall) is August (1.57").
The driest month (with the least rainfall) is February (0.24").
Average rainfall days
Delta Junction, AK
- Average rainfall days in January:
2 days - Average rainfall days in February:
2.3 days - Average rainfall days in March:
3.9 days - Average rainfall days in April:
5.1 days - Average rainfall days in May:
7.4 days - Average rainfall days in June:
10.1 days
- Average rainfall days in July:
11.3 days - Average rainfall days in August:
12.3 days - Average rainfall days in September:
8.4 days - Average rainfall days in October:
3.5 days - Average rainfall days in November:
1.7 days - Average rainfall days in December:
2.4 days
The month with the highest number of rainy days is August (12.3 days).
The month with the least rainy days is November (1.7 days).
Average snowfall
Delta Junction, AK
- Average snowfall in January:
2.05" - Average snowfall in February:
1.77" - Average snowfall in March:
2.99" - Average snowfall in April:
2.36" - Average snowfall in May:
0.63" - Average snowfall in June:
0"
The months with the highest snowfall are March and October (2.99").
The months with the least snowfall are June and July (0").
Average snowfall days
Delta Junction, AK
- Average snowfall days in January:
7.8 days - Average snowfall days in February:
8.7 days - Average snowfall days in March:
8 days - Average snowfall days in April:
5.6 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:
0.2 days - Average snowfall days in September:
1.9 days - Average snowfall days in October:
4.5 days - Average snowfall days in November:
9.6 days - Average snowfall days in December:
8.1 days
The month with the highest number of snowfall days is November (9.6 days).
The months with the least snowfall days are June and July (0 days).
Average daylight / Average sunshine
Delta Junction, AK
- Average daylight in January:
5h and 42min - Average daylight in February:
8h and 42min - Average daylight in March:
11h and 54min - Average daylight in April:
15h and 12min - Average daylight in May:
18h and 30min - Average daylight in June:
20h and 48min
- Average daylight in July:
19h and 30min - Average daylight in August:
16h and 18min - Average daylight in September:
13h and 0min - Average daylight in October:
9h and 42min - Average daylight in November:
6h and 30min - Average daylight in December:
4h and 24min
The month with the longest days is June (Average daylight: 20h and 48min).
The month with the shortest days is December (Average daylight: 4h and 24min).
- Average sunshine in January:
3h and 42min - Average sunshine in February:
5h and 0min - Average sunshine in March:
7h and 0min - Average sunshine in April:
8h and 36min - Average sunshine in May:
12h and 36min - Average sunshine in June:
13h and 24min
- Average sunshine in July:
12h and 36min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 24min - Average sunshine in October:
6h and 0min - Average sunshine in November:
4h and 24min - Average sunshine in December:
2h and 18min
The month with the most sunshine is June (Average sunshine: 13h and 24min).
The month with the least sunshine is December (Average sunshine: 2h and 18min).
Average sunshine days
Delta Junction, AK
- Average sunshine days in January:
23.5 days - Average sunshine days in February:
20.3 days - Average sunshine days in March:
22.2 days - Average sunshine days in April:
20.4 days - Average sunshine days in May:
21.2 days - Average sunshine days in June:
18.1 days
- Average sunshine days in July:
18.6 days - Average sunshine days in August:
17.4 days - Average sunshine days in September:
18.6 days - Average sunshine days in October:
23.3 days - Average sunshine days in November:
20.6 days - Average sunshine days in December:
23.5 days
The months with the most sunshine days are January and December (23.5 days).
The month with the least sunshine days is August (17.4 days).
Average UV index
Delta Junction, AK
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, September, October, November and December (UV index 2).
Average cloud cover
Delta Junction, AK
The months with the most cloud cover are March and November (Cloud cover 45).
The month with the least cloud cover is May (Cloud cover 35).
Average visibility
Delta Junction, AK
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, November and December (5mi).
