December weather forecastWillow Grove, LA
December
Weather in December
December, the first month of the winter in Willow Grove, is still a comfortable month, with an average temperature varying between 63°F (17.2°C) and 49.5°F (9.7°C).Temperature
December is marked by a subtle drop in average high-temperatures, transitioning from an agreeable 68.9°F (20.5°C) in November to a refreshing 63°F (17.2°C). An average low-temperature of 49.5°F (9.7°C) is recorded in the month of December.Humidity
The months with the highest humidity in Willow Grove are February, July through September and December, with an average relative humidity of 79%.Rainfall
In Willow Grove, in December, during 12.8 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. In Willow Grove, during the entire year, the rain falls for 172.6 days and collects up to 30.2" (767mm) of precipitation.Snowfall
February through December are months without snowfall.Daylight
With an average of 10h and 12min of daylight, December has the shortest days of the year in Willow Grove.On the first day of the month, sunrise is at 6:41 am and sunset at 5:02 pm. On the last day of December, sunrise is at 6:58 am and sunset at 5:13 pm CST.
Sunshine
The month with the least sunshine is December, with an average of 5.1h of sunshine.UV index
With an average maximum UV index of 3, December is the month with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average maximum UV index of 3 in December leads to these recommendations:
Ensure safety - Sun damage prevention is strongly urged. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Willow Grove, LA
- Average high temperature in December: 63°F
The warmest months (with the highest average high temperature) are July and August (89.8°F).
The month with the lowest average high temperature is January (60.3°F).
- Average low temperature in December: 49.5°F
The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (45.1°F).
Average pressure in December
Willow Grove, LA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.97"Hg).
Average wind speed in December
Willow Grove, LA
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in December
Willow Grove, LA
- Average humidity in December: 79%
The months with the highest relative humidity are February, July, August, September and December (79%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Willow Grove, LA
- Average rainfall in December: 2.24"
The wettest month (with the highest rainfall) is July (4.88").
The driest month (with the least rainfall) is November (1.26").
Average rainfall days in December
Willow Grove, LA
- Average rainfall days in December: 12.8 days
The month with the highest number of rainy days is August (22.3 days).
The month with the least rainy days is November (8 days).
Average snowfall in December
Willow Grove, LA
- Average snowfall in December: 0"
The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Willow Grove, LA
- Average snowfall days in December: 0.1 days
The months with the highest number of snowfall days are January and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Willow Grove, LA
- Average daylight in December: 10h and 12min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in December: 5h and 6min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in December
Willow Grove, LA
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is July (6.4 days).
Average UV index in December
Willow Grove, LA
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Willow Grove, LA
- Average cloud cover in December: 46
The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is October (Cloud cover 25).
Average visibility in December
Willow Grove, LA
- 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).
