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 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
Temperature readings reach their annual highs in December, averaging 63°F (17.2°C) and a minimum average of 46.2°F (7.9°C).Humidity
The average relative humidity in December is 51%.Rainfall
The wettest months are February and December, with an average 1.42" (36mm) of rainfall.Daylight
December has the shortest days of the year in Racimo, California, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 6:38 am and sunset at 4:41 pm. On the last day of December, sunrise is at 6:55 am and sunset at 4:51 pm PST.
Sunshine
The months with the least sunshine are February and December, with an average of 6.9h 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 health risk from unsafe exposure to UV radiation for the ordinary person.Note: A daily high UV index of 3 in December leads to these guidelines:
Guard yourself - An obligation to protect skin and eyes from harm exists. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
What is the average December temperature?
What is the average humidity in December?
What is the rainiest month?
How many days does it rain in December in Racimo?
What is the month with the shortest days?
How many hours of daylight does Racimo have in December?
When are sunrise and sunset in December?
What are the months with the least sunshine?
How many hours of sunshine does Racimo have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Racimo, CA
- Average high temperature in December: 63°F
The warmest month (with the highest average high temperature) is August (91.9°F).
The month with the lowest average high temperature is December (63°F).
- Average low temperature in December: 46.2°F
The month with the highest average low temperature is August (66.4°F).
The coldest month (with the lowest average low temperature) is February (45.9°F).
Average pressure in December
Racimo, CA
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Racimo, CA
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is May (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in December
Racimo, CA
- Average humidity in December: 51%
The months with the highest relative humidity are March and May (54%).
The month with the lowest relative humidity is August (43%).
Average rainfall in December
Racimo, CA
- Average rainfall in December: 1.42"
The wettest months (with the highest rainfall) are February and December (1.42").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in December
Racimo, CA
- Average rainfall days in December: 5.8 days
The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is June (1.1 days).
Average daylight in December /
Average sunshine in December
Racimo, CA
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 6h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The months with the least sunshine are February and December (Average sunshine: 6h and 54min).
Average sunshine days in December
Racimo, CA
- Average sunshine days in December: 23.9 days
The month with the most sunshine days is August (28.6 days).
The month with the least sunshine days is February (21.5 days).
Average UV index in December
Racimo, CA
- 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
Racimo, CA
- Average cloud cover in December: 21
The months with the most cloud cover are February, March and December (Cloud cover 21).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in December
Racimo, CA
- 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).
Racimo, California, USA
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