January weather forecastRiver Oaks, CA
January
Weather in January
January, the same as December, in River Oaks, California, is a moderate winter month, with temperature in the range of an average high of 59.7°F (15.4°C) and an average low of 41.5°F (5.3°C).Temperature
On the advent of January, River Oaks's average high-temperature exhibits a minor adjustment to a still refreshing 59.7°F (15.4°C) from December's 57.6°F (14.2°C). River Oaks registers a consistent average low-temperature of 41.5°F (5.3°C) during January.Humidity
The average relative humidity in January is 71%.Rainfall
In River Oaks, in January, it is raining for 6.6 days, with typically 0.94" (24mm) of accumulated precipitation. In River Oaks, during the entire year, the rain falls for 50.5 days and collects up to 5.43" (138mm) of precipitation.Daylight
In River Oaks, California, the average length of the day in January is 9h and 59min.On the first day of the month, sunrise is at 7:19 am and sunset at 5:00 pm. On the last day of January, in River Oaks, California, sunrise is at 7:09 am and sunset at 5:30 pm PST.
Sunshine
In January, the average sunshine in River Oaks is 6.4h.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 health hazard 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:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
River Oaks, CA
- Average high temperature in January: 59.7°F
The warmest months (with the highest average high temperature) are July and August (84.7°F).
The month with the lowest average high temperature is December (57.6°F).
- Average low temperature in January: 41.5°F
The month with the highest average low temperature is August (54.3°F).
The coldest months (with the lowest average low temperature) are February, March and December (40.6°F).
Average pressure in January
River Oaks, 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
River Oaks, CA
- Average wind speed in January: 4mph
The windiest month (with the highest average wind speed) is May (5.3mph).
The calmest month (with the lowest average wind speed) is November (3.9mph).
Average humidity in January
River Oaks, CA
- Average humidity in January: 71%
The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (58%).
Average rainfall in January
River Oaks, CA
- Average rainfall in January: 0.94"
The wettest month (with the highest rainfall) is December (1.02").
The driest months (with the least rainfall) are June, July, August and September (0.04").
Average rainfall days in January
River Oaks, CA
- Average rainfall days in January: 6.6 days
The month with the highest number of rainy days is March (9 days).
The month with the least rainy days is August (0.5 days).
Average daylight in January /
Average sunshine in January
River Oaks, CA
- Average daylight in January: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January: 6h and 24min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in January
River Oaks, CA
- Average sunshine days in January: 23.4 days
The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is February (20.6 days).
Average UV index in January
River Oaks, 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
River Oaks, CA
- Average cloud cover in January: 31
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in January
River Oaks, 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).
