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
In Holt, the lowest average temperatures are observed in December, with a high of 55.2°F (12.9°C) and a low of 41.2°F (5.1°C).Humidity
In December, the average relative humidity is 71%.Rainfall
In December, the rain falls for 9 days. Throughout December, 1.77" (45mm) of precipitation is accumulated. In Holt, during the entire year, the rain falls for 64.2 days and collects up to 11.34" (288mm) of precipitation.Snowfall
December is the only month when snow falls. The month with the most snowfall days is December, when snow falls for 0.1 days.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 7:03 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:56 pm PST.
Sunshine
With an average of 5.9h of sunshine, December has the least sunshine of the year.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 3 during December translates into the following guidance:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
What is the average December temperature?
What is the average humidity in December?
How much does it rain in December?
When does it snow the most?
When does it start snowing in Holt?
What is the month with the shortest days?
How many hours of daylight does Holt 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 Holt have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Holt, CA
- Average high temperature in December: 55.2°F
The warmest month (with the highest average high temperature) is July (94.3°F).
The month with the lowest average high temperature is December (55.2°F).
- Average low temperature in December: 41.2°F
The month with the highest average low temperature is August (59.5°F).
The coldest month (with the lowest average low temperature) is December (41.2°F).
Average pressure in December
Holt, CA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Holt, CA
- Average wind speed in December: 5.4mph
The windiest month (with the highest average wind speed) is June (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).
Average humidity in December
Holt, CA
- Average humidity in December: 71%
The month with the highest relative humidity is January (73%).
The month with the lowest relative humidity is July (44%).
Average rainfall in December
Holt, CA
- Average rainfall in December: 1.77"
The wettest month (with the highest rainfall) is February (2.13").
The driest month (with the least rainfall) is August (0").
Average rainfall days in December
Holt, CA
- Average rainfall days in December: 9 days
The month with the highest number of rainy days is March (12 days).
The month with the least rainy days is August (0.7 days).
Average snowfall days in December
Holt, CA
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Holt, CA
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 5h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in December
Holt, CA
- Average sunshine days in December: 21.1 days
The month with the most sunshine days is August (30.2 days).
The month with the least sunshine days is March (17.8 days).
Average UV index in December
Holt, CA
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Holt, CA
- Average cloud cover in December: 34
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in December
Holt, 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).
Holt, California, USA
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