January weather forecastPosts, CA
January
Weather in January
January, the same as December, in Posts, California, is another mild winter month, with an average temperature varying between 58.5°F (14.7°C) and 47.7°F (8.7°C).Temperature
The onset of January brings an average high-temperature of a still refreshing 58.5°F (14.7°C), nearly matching the December temperature. In January, the recorded average low-temperature in Posts, California, is a frosty 47.7°F (8.7°C).Humidity
The average relative humidity in January is 72%.Rainfall
In Posts, California, in January, it is raining for 9.1 days, with typically 2.09" (53mm) of accumulated precipitation. In Posts, during the entire year, the rain falls for 70 days and collects up to 11.93" (303mm) of precipitation.Daylight
In Posts, California, the average length of the day in January is 10h and 2min.On the first day of January in Posts, California, sunrise is at 7:18 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:32 pm PST.
Sunshine
In Posts, California, the average sunshine in January is 6.3h.UV index
In January, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In January, the maximum UV index of 4 translates into these guidelines:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Posts, CA
- Average high temperature in January: 58.5°F
The warmest month (with the highest average high temperature) is September (69.6°F).
The month with the lowest average high temperature is December (57°F).
- Average low temperature in January: 47.7°F
The month with the highest average low temperature is September (55.4°F).
The coldest month (with the lowest average low temperature) is December (46.9°F).
Average pressure in January
Posts, CA
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.93"Hg).
Average wind speed in January
Posts, CA
- Average wind speed in January: 7mph
The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in January
Posts, CA
- Average humidity in January: 72%
The month with the highest relative humidity is August (79%).
The month with the lowest relative humidity is November (70%).
Average rainfall in January
Posts, CA
- Average rainfall in January: 2.09"
The wettest month (with the highest rainfall) is December (2.48").
The driest month (with the least rainfall) is August (0.04").
Average rainfall days in January
Posts, CA
- Average rainfall days in January: 9.1 days
The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (1.3 days).
Average daylight in January /
Average sunshine in January
Posts, CA
- Average daylight in January: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January: 6h and 18min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in January
Posts, CA
- Average sunshine days in January: 20.2 days
The month with the most sunshine days is August (27.8 days).
The month with the least sunshine days is March (17.3 days).
Average UV index in January
Posts, CA
- Average UV index in January: 4
The months with the highest UV index are June, July, August and September (UV index 5).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in January
Posts, CA
- Average cloud cover in January: 30
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 13).
Average visibility in January
Posts, CA
- Average visibility in January: 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).
