January weather forecastWilton, CA
January
Weather in January
January in Wilton, California, is a refreshing winter month, with temperature in the range of an average low of 40.8°F (4.9°C) and an average high of 56.3°F (13.5°C).Temperature
The arrival of January brings an average high-temperature of a refreshing 56.3°F (13.5°C), nearly identical to December's 54.7°F (12.6°C). In the month of January, the average temperature dips to an icy 40.8°F (4.9°C) during the night.Humidity
In Wilton, the average relative humidity in January is 73%.Rainfall
In Wilton, in January, it is raining for 8.9 days, with typically 2.2" (56mm) of accumulated precipitation. In Wilton, California, during the entire year, the rain falls for 73.3 days and collects up to 15.63" (397mm) of precipitation.Snowfall
In Wilton, snow does not fall in January through November.Daylight
In Wilton, the average length of the day in January is 9h and 51min.On the first day of January, sunrise is at 7:22 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:25 pm PST.
Sunshine
In Wilton, the average sunshine in January is 6.1h.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 estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In January, the UV index of 3 transforms into the following advice:
Adopt protective measures - Suggestions to resist sunburn are offered. When the Sun is at its strongest around midday, find shade and limit exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Wilton, CA
- Average high temperature in January: 56.3°F
The warmest month (with the highest average high temperature) is July (94.3°F).
The month with the lowest average high temperature is December (54.7°F).
- Average low temperature in January: 40.8°F
The month with the highest average low temperature is August (59.2°F).
The coldest months (with the lowest average low temperature) are January and December (40.8°F).
Average pressure in January
Wilton, CA
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Wilton, CA
- Average wind speed in January: 4.7mph
The windiest month (with the highest average wind speed) is February (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.1mph).
Average humidity in January
Wilton, CA
- Average humidity in January: 73%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is September (44%).
Average rainfall in January
Wilton, CA
- Average rainfall in January: 2.2"
The wettest month (with the highest rainfall) is March (2.91").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in January
Wilton, CA
- Average rainfall days in January: 8.9 days
The month with the highest number of rainy days is March (13.3 days).
The months with the least rainy days are June, July and August (1.4 days).
Average snowfall days in January
Wilton, CA
- Average snowfall days in January: 0 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in January /
Average sunshine in January
Wilton, 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 30min).
- Average sunshine in January: 6h and 6min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in January
Wilton, CA
- Average sunshine days in January: 21.3 days
The month with the most sunshine days is July (29.1 days).
The month with the least sunshine days is March (16.9 days).
Average UV index in January
Wilton, CA
- Average UV index in January: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in January
Wilton, CA
- Average cloud cover in January: 33
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in January
Wilton, 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).
