January weather forecastFulton, CA
January
Weather in January
January, like December, is another refreshing winter month in Fulton, California, with an average temperature ranging between min 41.4°F (5.2°C) and max 57.6°F (14.2°C).Temperature
With the advent of January, Fulton's high-temperatures adjust to a still moderate 57.6°F (14.2°C), closely aligning with the preceding month. In Fulton, the average nighttime temperature during January is a cold 41.4°F (5.2°C).Humidity
In Fulton, California, the average relative humidity in January is 74%.Rainfall
In Fulton, in January, during 10.6 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. Throughout the year, there are 80.5 rainfall days, and 17.6" (447mm) of precipitation is accumulated.Daylight
In January, the average length of the day is 9h and 51min.On the first day of the month, sunrise is at 7:28 am and sunset at 5:00 pm. On the last day of January, in Fulton, sunrise is at 7:17 am and sunset at 5:31 pm PST.
Sunshine
The average sunshine in January in Fulton, California, is 5.7h.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 3 in January interprets into the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Fulton, CA
- Average high temperature in January: 57.6°F
The warmest month (with the highest average high temperature) is August (83.5°F).
The month with the lowest average high temperature is December (55.8°F).
- Average low temperature in January: 41.4°F
The month with the highest average low temperature is August (54.3°F).
The coldest month (with the lowest average low temperature) is December (40.5°F).
Average pressure in January
Fulton, 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
Fulton, CA
- Average wind speed in January: 4.8mph
The windiest month (with the highest average wind speed) is May (6.4mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).
Average humidity in January
Fulton, CA
- Average humidity in January: 74%
The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is September (58%).
Average rainfall in January
Fulton, CA
- Average rainfall in January: 2.87"
The wettest month (with the highest rainfall) is February (3.78").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in January
Fulton, CA
- Average rainfall days in January: 10.6 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 days).
Average daylight in January /
Average sunshine in January
Fulton, 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 42min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in January
Fulton, CA
- Average sunshine days in January: 19.2 days
The month with the most sunshine days is July (29.1 days).
The month with the least sunshine days is March (15.3 days).
Average UV index in January
Fulton, 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
Fulton, CA
- Average cloud cover in January: 37
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in January
Fulton, 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).





