December weather forecastGrandfalls, TX
December
Weather in December
The first month of the winter, December, is still a mild month in Grandfalls, Texas, with an average temperature ranging between max 58.3°F (14.6°C) and min 40.5°F (4.7°C).Temperature
In Grandfalls, the lowest temperatures are generally noted in December, averaging a high of 58.3°F (14.6°C) and a low of 40.5°F (4.7°C).Humidity
September and December, with an average relative humidity of 49%, are the most humid months.Rainfall
In December, the rain falls for 2.5 days. Throughout December, 0.28" (7mm) of precipitation is accumulated. In Grandfalls, during the entire year, the rain falls for 63.3 days and collects up to 6.61" (168mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. The months with the most snowfall are November and December, with an average 0.31" (8mm) of accumulated snow.Daylight
With an average of 10h and 6min of daylight, December has the shortest days of the year in Grandfalls.On the first day of December, sunrise is at 7:33 am and sunset at 5:48 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 5:59 pm CST.
Sunshine
The month with the least sunshine is December, with an average of 7h of sunshine.UV index
The month with the lowest UV index is December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In December, a daily UV index of 3 turns into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grandfalls, TX
- Average high temperature in December: 58.3°F
The warmest month (with the highest average high temperature) is June (96.4°F).
The month with the lowest average high temperature is December (58.3°F).
- Average low temperature in December: 40.5°F
The month with the highest average low temperature is August (77°F).
The coldest month (with the lowest average low temperature) is January (39.4°F).
Average pressure in December
Grandfalls, TX
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Grandfalls, TX
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is June (13.2mph).
The calmest month (with the lowest average wind speed) is December (8.9mph).
Average humidity in December
Grandfalls, TX
- Average humidity in December: 49%
The months with the highest relative humidity are September and December (49%).
The month with the lowest relative humidity is April (31%).
Average rainfall in December
Grandfalls, TX
- Average rainfall in December: 0.28"
The wettest month (with the highest rainfall) is May (1.1").
The driest month (with the least rainfall) is February (0.08").
Average rainfall days in December
Grandfalls, TX
- Average rainfall days in December: 2.5 days
The month with the highest number of rainy days is September (10 days).
The month with the least rainy days is February (1.9 days).
Average snowfall in December
Grandfalls, TX
- Average snowfall in December: 0.31"
The months with the highest snowfall are November and December (0.31").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Grandfalls, TX
- Average snowfall days in December: 1 days
The month with the highest number of snowfall days is December (1 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
Grandfalls, TX
- Average daylight in December: 10h and 6min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in December: 7h and 0min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in December
Grandfalls, TX
- Average sunshine days in December: 27.1 days
The month with the most sunshine days is January (27.8 days).
The month with the least sunshine days is September (18.1 days).
Average UV index in December
Grandfalls, TX
- Average UV index in December: 3
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Grandfalls, TX
- Average cloud cover in December: 19
The month with the most cloud cover is September (Cloud cover 20).
The month with the least cloud cover is June (Cloud cover 12).
Average visibility in December
Grandfalls, 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).
