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 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
A minor decrease in the average high-temperature is observed during December, shifting from an agreeable 69.1°F (20.6°C) in November to an enjoyable 63.7°F (17.6°C). During the December nights, an average temperature of 50.9°F (10.5°C) is observed.Humidity
February and December, with an average relative humidity of 78%, are the most humid months.Rainfall
In Norco, during December, the rain falls for 12.6 days and regularly aggregates up to 2.52" (64mm) of precipitation. In Norco, Louisiana, during the entire year, the rain falls for 180.8 days and collects up to 33.39" (848mm) of precipitation.Snowfall
January and December are months with snowfall. December is the first month it typically snows. Throughout December, there are 0.1 snowfall days. In Norco, during the entire year, snow falls for 0.3 days.Daylight
The month with the shortest days is December, with an average of 10h and 18min of daylight.On the first day of December, sunrise is at 6:40 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 5:12 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 5.1h of sunshine.UV index
December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, a regular UV index of 3 translates into these guidelines:
Undertake precautions - Obligation exists to protect against skin and eye damage. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. 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 is the usual temperature for Norco in December?
What are the most humid months?
What is the average humidity in December in Norco?
How much does it rain in December?
When does it start to snow?
What is the month with the shortest days?
How many hours of daylight does Norco have in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Norco have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Norco, LA
- Average high temperature in December: 63.7°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (60.4°F).
- Average low temperature in December: 50.9°F
The month with the highest average low temperature is August (77.5°F).
The coldest month (with the lowest average low temperature) is January (47.3°F).
Average pressure in December
Norco, 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
Norco, LA
- Average wind speed in December: 8.5mph
The windiest months (with the highest average wind speed) are February and April (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in December
Norco, LA
- Average humidity in December: 78%
The months with the highest relative humidity are February and December (78%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Norco, LA
- Average rainfall in December: 2.52"
The wettest month (with the highest rainfall) is July (5.39").
The driest month (with the least rainfall) is November (1.5").
Average rainfall days in December
Norco, LA
- Average rainfall days in December: 12.6 days
The month with the highest number of rainy days is August (23.7 days).
The month with the least rainy days is November (8.4 days).
Average snowfall days in December
Norco, LA
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is January (0.2 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
Norco, LA
- Average daylight in December: 10h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in December
Norco, LA
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is August (4.8 days).
Average UV index in December
Norco, LA
- Average UV index in December: 3
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Norco, LA
- Average cloud cover in December: 45
The month with the most cloud cover is December (Cloud cover 45).
The month with the least cloud cover is October (Cloud cover 24).
Average visibility in December
Norco, 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).
Norco, Louisiana, USA
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