January weather forecastLafayette, CA
January
Weather in January
January in Lafayette, California, is a moderate winter month, with an average temperature varying between 43.3°F (6.3°C) and 56.5°F (13.6°C).Temperature
Lafayette transitions into January recording an average high-temperature of a mild 56.5°F (13.6°C), closely aligning with the preceding month's temperature. Lafayette witnesses an average low-temperature of 43.3°F (6.3°C) throughout the month of January.Humidity
In January, the average relative humidity in Lafayette is 73%.Rainfall
In Lafayette, California, in January, it is raining for 10.1 days, with typically 2.13" (54mm) of accumulated precipitation. In Lafayette, during the entire year, the rain falls for 74.4 days and collects up to 12.6" (320mm) of precipitation.Daylight
In Lafayette, California, the average length of the day in January is 9h and 54min.On the first day of January in Lafayette, sunrise is at 7:24 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:30 pm PST.
Sunshine
In Lafayette, 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 Lafayette, California. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In January, the maximum UV index of 3 suggests these recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Lafayette, CA
- Average high temperature in January: 56.5°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is December (55.2°F).
- Average low temperature in January: 43.3°F
The months with the highest average low temperature are August and September (56.8°F).
The coldest month (with the lowest average low temperature) is January (43.3°F).
Average pressure in January
Lafayette, CA
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in January
Lafayette, CA
- Average wind speed in January: 4.8mph
The windiest month (with the highest average wind speed) is May (7.2mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).
Average humidity in January
Lafayette, CA
- Average humidity in January: 73%
The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is October (60%).
Average rainfall in January
Lafayette, CA
- Average rainfall in January: 2.13"
The wettest month (with the highest rainfall) is February (2.6").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in January
Lafayette, CA
- Average rainfall days in January: 10.1 days
The month with the highest number of rainy days is March (13.1 days).
The month with the least rainy days is August (0.8 days).
Average daylight in January /
Average sunshine in January
Lafayette, 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: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in January
Lafayette, CA
- Average sunshine days in January: 19.7 days
The month with the most sunshine days is August (27.8 days).
The month with the least sunshine days is March (16.3 days).
Average UV index in January
Lafayette, CA
- Average UV index in January: 3
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in January
Lafayette, 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 8).
Average visibility in January
Lafayette, 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).
