January weather forecastBerkeley, CA
January
Weather in January
January marks the commencement of the year with cool temperatures, the daily lows falling to 44.2°F (6.8°C) and highs ascending to 56.3°F (13.5°C). With the relative humidity averaging at 73%, foggy mornings become a typical sight in Berkeley, California. The turquoise sky becomes an artistic palette as the cloud coverage is around 33%. The early sunset offers a longer night, making it an idyllic time for stargazers. January, however, observes a relatively high rainfall with 7.6 rainfall days and 0.94" (24mm) of precipitation.Temperature
During January, Berkeley records an average high-temperature of a still refreshing 56.3°F (13.5°C), marking a slight divergence from December's 55.4°F (13°C). An average low-temperature of 44.2°F (6.8°C) is common in Berkeley, California, during the nights of January.Humidity
In January, the average relative humidity in Berkeley is 73%.Rainfall
In January, in Berkeley, the rain falls for 7.6 days. Throughout January, 0.94" (24mm) of precipitation is accumulated. Throughout the year, in Berkeley, there are 55.6 rainfall days, and 5.24" (133mm) of precipitation is accumulated.Daylight
The average length of the day in January is 9h and 54min.On the first day of the month, sunrise is at 7:24 am and sunset at 5:00 pm. On the last day of January, sunrise is at 7:14 am and sunset at 5:30 pm PST.
Sunshine
In Berkeley, the average sunshine in January is 6.1h.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Berkeley. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 3 in January, converts into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Berkeley, CA
- Average high temperature in January: 56.3°F
The warmest month (with the highest average high temperature) is September (76.6°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in January: 44.2°F
The month with the highest average low temperature is September (56.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).
Average pressure in January
Berkeley, 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
Berkeley, CA
- Average wind speed in January: 5.3mph
The windiest month (with the highest average wind speed) is May (7.3mph).
The calmest month (with the lowest average wind speed) is November (5mph).
Average humidity in January
Berkeley, CA
- Average humidity in January: 73%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (64%).
Average rainfall in January
Berkeley, CA
- Average rainfall in January: 0.94"
The wettest month (with the highest rainfall) is February (1.1").
The driest months (with the least rainfall) are June, July, August and September (0.08").
Average rainfall days in January
Berkeley, CA
- Average rainfall days in January: 7.6 days
The month with the highest number of rainy days is March (8.7 days).
The month with the least rainy days is August (1.5 days).
Average daylight in January /
Average sunshine in January
Berkeley, CA
- Average daylight in January: 9h and 54min
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 36min).
- Average sunshine in January: 6h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in January
Berkeley, CA
- Average sunshine days in January: 22.3 days
The month with the most sunshine days is October (26 days).
The month with the least sunshine days is February (20.5 days).
Average UV index in January
Berkeley, CA
- Average UV index in January: 3
The months with the highest UV index are April, May, 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
Berkeley, CA
- Average cloud cover in January: 33
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in January
Berkeley, 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).
