January weather forecastWalnut Creek, CA
January
Weather in January
January, like December, is another mild winter month in Walnut Creek, California, with an average temperature ranging between max 56.8°F (13.8°C) and min 42.4°F (5.8°C).Temperature
The transition into January is marked with an average high-temperature of a still refreshing 56.8°F (13.8°C), showing an insignificant shift from December's 55.4°F (13°C). January brings an average low-temperature of 42.4°F (5.8°C) to Walnut Creek.Humidity
In January, the average relative humidity is 73%.Rainfall
In Walnut Creek, in January, it is raining for 9.3 days, with typically 1.97" (50mm) of accumulated precipitation. In Walnut Creek, during the entire year, the rain falls for 68.7 days and collects up to 11.26" (286mm) of precipitation.Daylight
In Walnut Creek, the average length of the day in January is 9h and 53min.On the first day of the month, sunrise is at 7:23 am and sunset at 4:59 pm. On the last day of January, in Walnut Creek, sunrise is at 7:13 am and sunset at 5:30 pm PST.
Sunshine
In Walnut Creek, the average sunshine in January is 6h.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Walnut Creek. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In January, the maximum UV index of 3 suggests this advice:
Exercise prevention - Warding off sunburn is urged. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Walnut Creek, CA
- Average high temperature in January: 56.8°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in January: 42.4°F
The month with the highest average low temperature is September (57.2°F).
The coldest months (with the lowest average low temperature) are January and December (42.4°F).
Average pressure in January
Walnut Creek, CA
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Walnut Creek, CA
- Average wind speed in January: 4.6mph
The windiest month (with the highest average wind speed) is May (7.3mph).
The calmest month (with the lowest average wind speed) is November (4.4mph).
Average humidity in January
Walnut Creek, CA
- Average humidity in January: 73%
The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are September and October (58%).
Average rainfall in January
Walnut Creek, CA
- Average rainfall in January: 1.97"
The wettest month (with the highest rainfall) is February (2.4").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in January
Walnut Creek, CA
- Average rainfall days in January: 9.3 days
The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.8 days).
Average daylight in January /
Average sunshine in January
Walnut Creek, CA
- Average daylight in January: 9h and 54min
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 36min).
- Average sunshine in January: 6h and 0min
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 48min).
Average sunshine days in January
Walnut Creek, CA
- Average sunshine days in January: 20.7 days
The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is March (17.5 days).
Average UV index in January
Walnut Creek, CA
- Average UV index in January: 3
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in January
Walnut Creek, CA
- Average cloud cover in January: 34
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in January
Walnut Creek, 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).
