January weather forecastMonte Rio, CA
January
Weather in January
January, like December, is a moderate winter month in Monte Rio, California, with temperature in the range of an average low of 42.3°F (5.7°C) and an average high of 57.7°F (14.3°C).Temperature
The shift into January records an average high-temperature of a still mild 57.7°F (14.3°C), subtly varied from December's 56.3°F (13.5°C). An average low-temperature of 42.3°F (5.7°C) is noted in Monte Rio during the month of January.Humidity
In January, the average relative humidity is 75%.Rainfall
In Monte Rio, in January, during 8.1 rainfall days, 1.97" (50mm) of precipitation is typically accumulated. In Monte Rio, during the entire year, the rain falls for 60.1 days and collects up to 12.87" (327mm) of precipitation.Daylight
In Monte Rio, the average length of the day in January is 9h and 51min.On the first day of the month, sunrise is at 7:29 am and sunset at 5:01 pm. On the last day of January, sunrise is at 7:18 am and sunset at 5:32 pm PST.
Sunshine
In Monte Rio, the average sunshine in January is 5.6h.UV index
The months with the lowest UV index in Monte Rio are January, February, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: An average UV index of 3 in January transforms into this advice:
Adopt protective measures - It is advised to guard against sun damage. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Monte Rio, CA
- Average high temperature in January: 57.7°F
The warmest month (with the highest average high temperature) is August (81°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in January: 42.3°F
The months with the highest average low temperature are August and September (53.4°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).
Average pressure in January
Monte Rio, 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
Monte Rio, CA
- Average wind speed in January: 5.3mph
The windiest month (with the highest average wind speed) is May (7.2mph).
The calmest month (with the lowest average wind speed) is November (5mph).
Average humidity in January
Monte Rio, CA
- Average humidity in January: 75%
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is September (62%).
Average rainfall in January
Monte Rio, CA
- Average rainfall in January: 1.97"
The wettest month (with the highest rainfall) is February (3.27").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in January
Monte Rio, CA
- Average rainfall days in January: 8.1 days
The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is August (0.9 days).
Average daylight in January /
Average sunshine in January
Monte Rio, CA
- Average daylight in January: 9h and 48min
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 30min).
- Average sunshine in January: 5h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in January
Monte Rio, CA
- Average sunshine days in January: 22 days
The month with the most sunshine days is July (28.9 days).
The month with the least sunshine days is February (19.9 days).
Average UV index in January
Monte Rio, CA
- Average UV index in January: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in January
Monte Rio, CA
- Average cloud cover in January: 38
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in January
Monte Rio, 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).





