Climate and monthly weather forecastMcKinney, TX
Climate and monthly weather forecast
The climate of McKinney
McKinney, Texas, found within the United States, aligns with the Cfa climate specification according to the Köppen climate classification. This designation constitutes a humid subtropical climate with no dry season.Shaping the weather scene in McKinney, Texas, an examination of the climate data suggests a moderate weather regime with changes correlated to the different seasons. McKinney's weather displays distinctive temperature variations, humidity changes, and rainfall fluctuations throughout the year.
Temperature vacillations are most dramatic, with average high temperatures in McKinney ranging from 53.2°F (11.8°C) in January and slowly climbing to the highest temperature of 94.8°F (34.9°C) in August. Likewise, average low temperatures unfold, beginning from 37.9°F (3.3°C) in January and peaking to 75.2°F (24°C) in August.
Relative humidity in McKinney shows a more sporadic pattern, fluctuating between 59% in August and climbing to a maximum of 76% in May. Rainfall in McKinney exhibits a modest up and down pattern. The city sees the least amount of rainfall with 1.77" (45mm) in January, whereas rainfall tops out at 4.17" (106mm) in October.
Understanding the special case of snowfall in a city like McKinney gains importance amidst climate change. It is not uncommon for the city to have no snowfall from March to November, with sporadic snowfall happening from December to February.
With a combination of these factors, McKinney poses an interesting focal point for climate study or for individuals keenly interested in weather patterns.
The best time to visit McKinney
To identify the optimal period to visit McKinney, weather parameters such as temperature, rainfall, and sunshine hours largely contribute to the decision-making process. A span from April to June emerges as the ideal choice when daily high temperature averages span from 73°F (22.8°C) to 89.6°F (32°C), with rainfall being relatively less compared to other months and plenty of daylight available.The worst time to visit McKinney
Although McKinney's weather provides an exciting experience throughout the year, the period from July to September stands as the most challenging time to visit. The average high temperatures hover around 93.9°F (34.4°C) to 94.8°F (34.9°C) and relative humidity nudges to around 65%. In conjunction, the rainfall measures around 2.6" (66mm) to 3.07" (78mm) during this period.Spring weather in McKinney
Spring season ushers in a splendid weather transition in McKinney. March starts with a high temperature average of 65.5°F (18.6°C) rising to a comfortable 80.4°F (26.9°C) by May. A surge in rainfall is also evident with a progression from 3.19" (81mm) in March to 3.94" (100mm) in May. Additionally, daylight hours increase, rewarding McKinney with longer and brighter days.Summer weather in McKinney
Summer in McKinney is intense and humid. The high temperature averages dominate between 89.6°F (32°C) to 94.8°F (34.9°C) while the minimum dips from 72.9°F (22.7°C) in June to 75.2°F (24°C) in August. The determining feature, however, is that the humidity falls from its peak of 76% ahead of the summer and stabilizes around 59% by the end of August.Autumn weather in McKinney
Autumn arranges milder weather for McKinney. High temperatures begin to descend from 87.1°F (30.6°C) in September to 63.5°F (17.5°C) by November. Concurrently, rainfall decreases from 3.07" (78mm) in September to 2.4" (61mm) in November. Additionally, the daylight duration shortens from 12.4 hours to 10.5 hours.Winter weather in McKinney
Winter in McKinney brings cooler temperatures and comparatively less rainfall. High temperatures average from 63.5°F (17.5°C) to 53.2°F (11.8°C) during December which further plummets to 54.5°F (12.5°C) by February. The cold season also observes a marked decrease in rainfall with only 2.17" (55mm) recorded in December. Furthermore, 10 hours of daylight and an average below one inch of snowfall round off the winter experience in McKinney, Texas.Weather in January
January brings in the new year with the coldest temperatures, with the night mercury levels dropping to a low of 37.9°F (3.3°C) in McKinney, Texas. It marks the start of the year with extended revolving around gentle chills and occasional snowfall. Weather in January »Weather in February
February experiences a marginal rise in temperatures as the afternoons warm up to an average maximum of 56.5°F (13.6°C). The month remains relatively high on the humidity chart, which is a recurring pattern until early summer. Weather in February »Weather in March
March comes with a warmer weather pattern, with the temperature touching 65.5°F (18.6°C) by the afternoon. The city of McKinney begins to bloom as spring spreads across Texas, adding to the daylight hours and aiding nature in showing its true colors. Weather in March »Weather in April
April marks the transition from spring to summer with an increased afternoon temperature reaching up to 73°F (22.8°C). McKinney in April is relatively less hydrating as humidity drops from previous months. Residing in April, an upward trend in daylight hours denotes that summer is gaining ground. Weather in April »Weather in May
Signifying the onset of schematic Texas summer months, May witnesses a surge in temperatures with highs reaching up to 80.4°F (26.9°C). McKinney is surrounded by copious sunshine, as daylight hours shoot up to a bright 13.9 hours. Weather in May »Weather in June
June embraces the summer heat with high temperatures escalating to a sweltering 89.6°F (32°C). During this time of year, McKinney gets fullest of the sunshine hours, making outdoor activities all the more appealing. Alongside, residents also observe noticeably dropped wind speeds setting a languid summer ambiance. Weather in June »Weather in July
July is the hottest month of the year in McKinney, Texas, with the afternoon temperatures soaring up to a scorching 93.9°F (34.4°C) on average. The month sees fewer clouds, making room for more sunlight and rising UV indexes. On the other hand, the decrease in humidity marks the culmination of an earlier mentioned arc. Weather in July »Weather in August
August continues the trend of heat with the mercury rising to an average high of 94.8°F (34.9°C). McKinney witnesses the most sunlit month, with daylight hours slightly surpassing its preceding ones. With falling wind speeds and scanty clouds, August days are largely filled with bright, intense sunshine. Weather in August »Weather in September
September marks the beginning of a declining trend in temperature, sliding down to 87.1°F (30.6°C) by the afternoon. McKinney welcomes the early autumn warmth and a relative resurge in humidity. By this month, daylight hours gradually reduce, dimming the extended bright summer days. Weather in September »Weather in October
The arrival of October signals the heart of fall in McKinney, Texas, with the temperature dipping down to a moderate 74.8°F (23.8°C) in the afternoon. With an increase in the number of daylight hours, a significant shift towards cooler weather becomes observable. Weather in October »Weather in November
November carries a chill in the air, with McKinney experiencing a sharp drop in temperatures, going down to 63.5°F (17.5°C) in the afternoon. The city gears up for winters as the daylight hours decrease further and the nights start getting cooler. Weather in November »Weather in December
December ends the year on a colder note with the temperature further sliding down to 54.5°F (12.5°C) during the day. McKinney in December has an unmistakably winter feel, with brief snowfalls making a guest appearance. The days are shorter with reduced sunshine hours, and the nightlife gains prominence amidst the holiday festivities. Weather in December »Updated: Feb 14, 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
With an average high-temperature of 53.2°F (11.8°C) and an average low-temperature of 37.9°F (3.3°C), January is the coldest month.
The month with the least rainfall is January, when the rain falls for 7.3 days and typically collects 1.77" (45mm) of precipitation.
Throughout the year, there are 144.7 rainfall days, and 33.54" (852mm) of precipitation is accumulated.
January, February, November and December are months with snowfall.
Throughout the year, in McKinney, Texas, there are 3.1 snowfall days, and 1.1" (28mm) of snow is accumulated.
January, November and December, with an average maximum UV index of 3, are months with the lowest UV index in McKinney.
February is the month with the most snowfall. Snow falls for 1.3 days and accumulates 0.71" (18mm) of snow.
March through October are months without snowfall.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in McKinney, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
May is the most humid month, with an average relative humidity of 76%.
The month with the longest days in McKinney, Texas, is June, with an average of 14h and 18min of daylight.
June through August, with an average maximum UV index of 7, are months with the highest UV index.
August stands out as McKinney's warmest month, with temperatures ranging between an average high of 94.8°F (34.9°C) and a low of 75.2°F (24°C).
The least humid month in McKinney is August, with an average relative humidity of 59%.
With an average of 11.1h of sunshine, August has the most sunshine of the year in McKinney, Texas.
The month with the most rainfall in McKinney, Texas, is October, when the rain falls for 12.3 days and typically aggregates up to 4.17" (106mm) of precipitation.
The month with the shortest days is December, with an average of 10h and 0min of daylight.
The month with the least sunshine in McKinney is December, with an average of 5.6h of sunshine.
Average temperature
McKinney, TX
The warmest month (with the highest average high temperature) is August (94.8°F).
The month with the lowest average high temperature is January (53.2°F).
The month with the highest average low temperature is August (75.2°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).
Average pressure
McKinney, TX
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
McKinney, TX
- Average wind speed in January:
9.4mph - Average wind speed in February:
9.9mph - Average wind speed in March:
10.1mph - Average wind speed in April:
10mph - Average wind speed in May:
9.1mph - Average wind speed in June:
8mph
- Average wind speed in July:
7.2mph - Average wind speed in August:
6.9mph - Average wind speed in September:
6.8mph - Average wind speed in October:
8.3mph - Average wind speed in November:
8.8mph - Average wind speed in December:
8.8mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity
McKinney, TX
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (59%).
Average rainfall
McKinney, TX
- Average rainfall in January:
1.77" - Average rainfall in February:
1.89" - Average rainfall in March:
3.19" - Average rainfall in April:
2.83" - Average rainfall in May:
3.94" - Average rainfall in June:
2.87"
The wettest month (with the highest rainfall) is October (4.17").
The driest month (with the least rainfall) is January (1.77").
Average rainfall days
McKinney, TX
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
10.1 days - Average rainfall days in March:
14.4 days - Average rainfall days in April:
13.6 days - Average rainfall days in May:
15.3 days - Average rainfall days in June:
12.9 days
- Average rainfall days in July:
12.7 days - Average rainfall days in August:
12.8 days - Average rainfall days in September:
15.1 days - Average rainfall days in October:
12.3 days - Average rainfall days in November:
8.8 days - Average rainfall days in December:
9.4 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (7.3 days).
Average snowfall
McKinney, TX
The month with the highest snowfall is February (0.71").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days
McKinney, TX
- Average snowfall days in January:
0.7 days - Average snowfall days in February:
1.3 days - Average snowfall days in March:
0.3 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 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 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
0.3 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
McKinney, TX
- Average daylight in January:
10h and 18min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 54min - Average daylight in June:
14h and 18min
- Average daylight in July:
14h and 6min - Average daylight in August:
13h and 18min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 30min - Average daylight in December:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January:
5h and 48min - Average sunshine in February:
6h and 36min - Average sunshine in March:
6h and 54min - Average sunshine in April:
8h and 12min - Average sunshine in May:
8h and 42min - Average sunshine in June:
10h and 12min
- Average sunshine in July:
10h and 48min - Average sunshine in August:
11h and 6min - Average sunshine in September:
8h and 30min - Average sunshine in October:
6h and 30min - Average sunshine in November:
5h and 54min - Average sunshine in December:
5h and 36min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days
McKinney, TX
- Average sunshine days in January:
22.3 days - Average sunshine days in February:
15.8 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
14.3 days - Average sunshine days in May:
14.5 days - Average sunshine days in June:
14.7 days
- Average sunshine days in July:
16.4 days - Average sunshine days in August:
15.8 days - Average sunshine days in September:
13.6 days - Average sunshine days in October:
17.4 days - Average sunshine days in November:
19 days - Average sunshine days in December:
19.6 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is September (13.6 days).
Average UV index
McKinney, TX
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover
McKinney, TX
The months with the most cloud cover are February and March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility
McKinney, TX
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).
