January weather forecastSan Quentin, CA
January
Weather in January
January, like December, is another refreshing winter month in San Quentin, California, with an average temperature ranging between max 56.1°F (13.4°C) and min 45.5°F (7.5°C).Temperature
In January, San Quentin notes an average high-temperature of a still mild 56.1°F (13.4°C), hardly different from the preceding month. During the January nights, an average temperature of 45.5°F (7.5°C) is observed.Humidity
The average relative humidity in January in San Quentin is 74%.Rainfall
In San Quentin, during January, the rain falls for 5.9 days and regularly aggregates up to 0.59" (15mm) of precipitation. In San Quentin, during the entire year, the rain falls for 48 days and collects up to 3.94" (100mm) of precipitation.Daylight
The average length of the day in January is 9h and 53min.On the first day of the month, sunrise is at 7:25 am and sunset at 5:01 pm. On the last day of January, sunrise is at 7:15 am and sunset at 5:31 pm PST.
Sunshine
The average sunshine in January is 5.7h.UV index
The months with the lowest UV index in San Quentin are January, February, November 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 radiation for the average person.Note: In January, an average UV index of 3 transforms into the following instructions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
San Quentin, CA
- Average high temperature in January: 56.1°F
The warmest month (with the highest average high temperature) is September (72.3°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in January: 45.5°F
The month with the highest average low temperature is September (56.1°F).
The coldest month (with the lowest average low temperature) is December (45.3°F).
Average pressure in January
San Quentin, 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 (29.92"Hg).
Average wind speed in January
San Quentin, CA
- Average wind speed in January: 6mph
The windiest month (with the highest average wind speed) is May (7.8mph).
The calmest months (with the lowest average wind speed) are October and November (5.5mph).
Average humidity in January
San Quentin, CA
- Average humidity in January: 74%
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is October (68%).
Average rainfall in January
San Quentin, CA
- Average rainfall in January: 0.59"
The wettest month (with the highest rainfall) is February (0.87").
The driest months (with the least rainfall) are June, July, August and September (0.04").
Average rainfall days in January
San Quentin, CA
- Average rainfall days in January: 5.9 days
The month with the highest number of rainy days is March (8.8 days).
The months with the least rainy days are June and August (1.2 days).
Average daylight in January /
Average sunshine in January
San Quentin, CA
- Average daylight in January: 9h and 54min
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 January: 5h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in January
San Quentin, CA
- Average sunshine days in January: 24.2 days
The month with the most sunshine days is June (26.4 days).
The month with the least sunshine days is March (20.7 days).
Average UV index in January
San Quentin, CA
- Average UV index in January: 3
The months with the highest UV index are April, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in January
San Quentin, CA
- Average cloud cover in January: 36
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is September (Cloud cover 19).
Average visibility in January
San Quentin, 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).
