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
December's arrival signals a moderate reduction in the average high-temperature, easing from a comfortable 63.5°F (17.5°C) in November to a still refreshing 55.9°F (13.3°C). During December, an average low-temperature of 43°F (6.1°C) is observed.Humidity
The average relative humidity in December is 79%.Rainfall
In Grimes, in December, during 13.4 rainfall days, 3.43" (87mm) of precipitation is typically accumulated. In Grimes, during the entire year, the rain falls for 158.9 days and collects up to 37.28" (947mm) of precipitation.Snowfall
In Grimes, snow does not fall in April through December.Daylight
With an average of 10h and 0min of daylight, December has the shortest days of the year.On the first day of December in Grimes, sunrise is at 6:49 am and sunset at 4:58 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:09 pm CST.
Sunshine
The average sunshine in December is 5h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: In December, the average maximum UV index of 3 translates into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. To guard against the harmful effects of the Sun, minimize exposure during midday. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Grimes in December?
What is the average humidity in December?
How many days does it rain in December?
When it does not snow?
Does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Grimes, LA
- Average high temperature in December: 55.9°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (53.1°F).
- Average low temperature in December: 43°F
The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (39.2°F).
Average pressure in December
Grimes, LA
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Grimes, LA
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is February (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in December
Grimes, LA
- Average humidity in December: 79%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is October (67%).
Average rainfall in December
Grimes, LA
- Average rainfall in December: 3.43"
The wettest month (with the highest rainfall) is April (4.41").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in December
Grimes, LA
- Average rainfall days in December: 13.4 days
The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is October (9.5 days).
Average snowfall in December
Grimes, LA
- Average snowfall in December: 0"
The months with the highest snowfall are January and February (0.16").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Grimes, LA
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is January (0.8 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
Grimes, LA
- 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 0min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
Grimes, LA
- Average sunshine days in December: 15.8 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (12.2 days).
Average UV index in December
Grimes, LA
- 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 and December (UV index 3).
Average cloud cover in December
Grimes, LA
- Average cloud cover in December: 45
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in December
Grimes, 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).
Grimes, Louisiana, USA
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