January weather forecastThermalito, CA
January
Weather in January
January in Thermalito, California, is a mild winter month, with an average temperature fluctuating between 41.9°F (5.5°C) and 56.8°F (13.8°C).Temperature
January's advent presents an average high-temperature of a moderate 56.8°F (13.8°C), indicating a slight variation from the conditions of the previous month. An average low-temperature of 41.9°F (5.5°C) is noted during the month of January.Humidity
In Thermalito, the average relative humidity in January is 68%.Rainfall
In Thermalito, in January, it is raining for 9.9 days, with typically 3.46" (88mm) of accumulated precipitation. In Thermalito, during the entire year, the rain falls for 80.4 days and collects up to 24.21" (615mm) of precipitation.Snowfall
January through November are months without snowfall.Daylight
In Thermalito, the average length of the day in January is 9h and 46min.On the first day of the month, sunrise is at 7:26 am and sunset at 4:53 pm. On the last day of January, sunrise is at 7:14 am and sunset at 5:24 pm PST.
Sunshine
In Thermalito, the average sunshine in January is 5.9h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: A typical high UV index of 3 in January suggests the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Thermalito, CA
- Average high temperature in January: 56.8°F
The warmest month (with the highest average high temperature) is July (95.9°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in January: 41.9°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is December (40.6°F).
Average pressure in January
Thermalito, CA
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in January
Thermalito, CA
- Average wind speed in January: 5.5mph
The windiest month (with the highest average wind speed) is March (6.3mph).
The calmest months (with the lowest average wind speed) are August and November (5.2mph).
Average humidity in January
Thermalito, CA
- Average humidity in January: 68%
The month with the highest relative humidity is March (72%).
The month with the lowest relative humidity is July (33%).
Average rainfall in January
Thermalito, CA
- Average rainfall in January: 3.46"
The wettest month (with the highest rainfall) is March (4.61").
The driest month (with the least rainfall) is July (0.04").
Average rainfall days in January
Thermalito, CA
- Average rainfall days in January: 9.9 days
The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is July (1.3 days).
Average snowfall days in January
Thermalito, CA
- Average snowfall days in January: 0 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 January /
Average sunshine in January
Thermalito, CA
- Average daylight in January: 9h and 48min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 5h and 54min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in January
Thermalito, CA
- Average sunshine days in January: 20.4 days
The month with the most sunshine days is July (29.3 days).
The month with the least sunshine days is March (15.5 days).
Average UV index in January
Thermalito, CA
- Average UV index in January: 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 January
Thermalito, CA
- Average cloud cover in January: 35
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in January
Thermalito, 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).





