Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
In McKinney, the average high-temperature in December drops from a comfortable 63.5°F (17.5°C) in November to a cool 54.5°F (12.5°C). The average low-temperature, in McKinney, is 40.3°F (4.6°C).Humidity
In December, the average relative humidity in McKinney, Texas, is 71%.Rainfall
In McKinney, it is raining for 9.4 days, with typically 2.17" (55mm) of accumulated precipitation. Throughout the year, in McKinney, Texas, there are 144.7 rainfall days, and 33.54" (852mm) of precipitation is accumulated.Snowfall
Months with snowfall in McKinney are January, February, November and December. In McKinney, Texas, during 0.3 snowfall days, 0.08" (2mm) of snow is typically accumulated. In McKinney, Texas, during the entire year, snow falls for 3.1 days and aggregates up to 1.1" (28mm) of snow.Daylight
The month with the shortest days in McKinney, Texas, is December, with an average of 10h and 0min of daylight.On the first day of the month, sunrise is at 7:11 am and sunset at 5:19 pm. On the last day of December, sunrise is at 7:29 am and sunset at 5:29 pm CST.
Sunshine
The month with the least sunshine in McKinney is December, with an average of 5.6h of sunshine.UV index
The months with the lowest UV index in McKinney are January, November and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
FAQ
What is the temperature in December in McKinney?
What is the average humidity in December in McKinney?
How many days does it rain in December in McKinney?
How much does it snow in McKinney in December?
What is the month with the shortest days in McKinney?
How many hours of daylight does McKinney have in December?
When are sunrise and sunset in December in McKinney?
What is the month with the least sunshine in McKinney?
How long on average sun shines in December in McKinney?
What are the months with the lowest UV index in McKinney?
What is the UV index intensity in December in McKinney?
Average temperature in December
McKinney, TX
- Average high temperature in December: 54.5°F
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).
- Average low temperature in December: 40.3°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 in December
McKinney, TX
- 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 in December
McKinney, TX
- 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 in December
McKinney, TX
- Average humidity in December: 71%
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (59%).
Average rainfall in December
McKinney, TX
- Average rainfall in December: 2.17"
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 in December
McKinney, TX
- 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 in December
McKinney, TX
- Average snowfall in December: 0.08"
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 in December
McKinney, TX
- 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 in December /
Average sunshine in December
McKinney, TX
- 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 December: 5h and 4min
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 in December
McKinney, TX
- 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 in December
McKinney, TX
- Average UV index in December: 3
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 in December
McKinney, TX
- Average cloud cover in December: 38
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 in December
McKinney, TX
- Average visibility in December: 6mi
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).
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