Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
The onset of January notes an average high-temperature of a still refreshing 61°F (16.1°C), subtly shifted from December's 58.5°F (14.7°C). In the month of January, Mount Wilson's average low-temperature falls to a chilly 44.2°F (6.8°C).Humidity
In January, the average relative humidity is 51%.Rainfall
In Mount Wilson, during January, the rain falls for 5.3 days and regularly aggregates up to 1.42" (36mm) of precipitation. In Mount Wilson, during the entire year, the rain falls for 50.3 days and collects up to 8.7" (221mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Mount Wilson, during January, snow falls for 0.5 days and regularly aggregates up to 0.59" (15mm) of snow. Throughout the year, there are 3.5 snowfall days, and 7.32" (186mm) of snow is accumulated.Daylight
In Mount Wilson, the average length of the day in January is 10h and 11min.On the first day of the month, sunrise is at 6:58 am and sunset at 4:53 pm. On the last day of January, sunrise is at 6:50 am and sunset at 5:20 pm PST.
Sunshine
The months with the least sunshine are January, February and December, with an average of 6.9h of sunshine.UV index
In January, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 4 in January converts into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are January temperatures?
What is the average humidity in January?
How many days does it rain in January?
How many days does it snow in January?
How many hours of daylight does Mount Wilson have in January?
What time are sunrise and sunset in January?
What are the months with the least sunshine?
How long on average sun shines in January in Mount Wilson?
How high is the UV index in January?
Average temperature in January
Mount Wilson, CA
- Average high temperature in January: 61°F
The warmest month (with the highest average high temperature) is August (86.2°F).
The month with the lowest average high temperature is December (58.5°F).
- Average low temperature in January: 44.2°F
The month with the highest average low temperature is August (64°F).
The coldest month (with the lowest average low temperature) is December (43.3°F).
Average pressure in January
Mount Wilson, CA
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in January
Mount Wilson, CA
- Average wind speed in January: 5.8mph
The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in January
Mount Wilson, CA
- Average humidity in January: 51%
The month with the highest relative humidity is March (56%).
The month with the lowest relative humidity is August (45%).
Average rainfall in January
Mount Wilson, CA
- Average rainfall in January: 1.42"
The wettest month (with the highest rainfall) is February (1.73").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in January
Mount Wilson, CA
- Average rainfall days in January: 5.3 days
The month with the highest number of rainy days is March (6.4 days).
The month with the least rainy days is June (1.3 days).
Average snowfall in January
Mount Wilson, CA
- Average snowfall in January: 0.59"
The month with the highest snowfall is December (2.99").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Mount Wilson, CA
- Average snowfall days in January: 0.5 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Mount Wilson, CA
- Average daylight in January: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January: 6h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 54min).
Average sunshine days in January
Mount Wilson, CA
- Average sunshine days in January: 25.1 days
The month with the most sunshine days is June (27.9 days).
The month with the least sunshine days is February (21.4 days).
Average UV index in January
Mount Wilson, CA
- Average UV index in January: 4
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are November and December (UV index 3).
Average cloud cover in January
Mount Wilson, CA
- Average cloud cover in January: 20
The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in January
Mount Wilson, 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).
Mount Wilson, California, USA
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