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 arrival of January coincides with an average high-temperature of a still icy 38.8°F (3.8°C), indicating a minimal shift from December's 37.2°F (2.9°C). Nighttime temperatures hover around an average low of 23.2°F (-4.9°C) in January.Humidity
The months with the highest humidity are January and March, with an average relative humidity of 81%.Rainfall
In Sierraville, in January, during 6.8 rainfall days, 3.62" (92mm) of precipitation is typically accumulated. Throughout the year, there are 80.1 rainfall days, and 22.95" (583mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. In Sierraville, in January, snow falls for 10.5 days, with typically accumulated 19.09" (485mm) of snow. In Sierraville, during the entire year, snow falls for 69.3 days and aggregates up to 103.5" (2629mm) of snow.Daylight
In January, the average length of the day is 9h and 45min.On the first day of the month, sunrise is at 7:21 am and sunset at 4:47 pm. On the last day of January, sunrise is at 7:09 am and sunset at 5:19 pm PST.
Sunshine
The month with the least sunshine is January, with an average of 5h of sunshine.UV index
In January, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily high UV index of 2 in January leads to these guidelines:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in Sierraville in January?
What is the most humid month?
What is the average humidity in January?
How much does it rain in January?
How many days does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January in Sierraville?
What is the month with the least sunshine in Sierraville?
How long on average sun shines in January?
What is the UV index reading in January?
Average temperature in January
Sierraville, CA
- Average high temperature in January: 38.8°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (37.2°F).
- Average low temperature in January: 23.2°F
The month with the highest average low temperature is July (47.5°F).
The coldest month (with the lowest average low temperature) is December (21.6°F).
Average pressure in January
Sierraville, CA
- Average pressure in January: 30.19"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in January
Sierraville, CA
- Average wind speed in January: 5.7mph
The windiest month (with the highest average wind speed) is March (6.6mph).
The calmest months (with the lowest average wind speed) are August and September (5.2mph).
Average humidity in January
Sierraville, CA
- Average humidity in January: 81%
The months with the highest relative humidity are January and March (81%).
The months with the lowest relative humidity are July and August (40%).
Average rainfall in January
Sierraville, CA
- Average rainfall in January: 3.62"
The wettest month (with the highest rainfall) is March (4.02").
The driest month (with the least rainfall) is August (0.2").
Average rainfall days in January
Sierraville, CA
- Average rainfall days in January: 6.8 days
The month with the highest number of rainy days is May (11.8 days).
The month with the least rainy days is July (3.3 days).
Average snowfall in January
Sierraville, CA
- Average snowfall in January: 19.09"
The month with the highest snowfall is December (22.52").
The months with the least snowfall are July and August (0").
Average snowfall days in January
Sierraville, CA
- Average snowfall days in January: 10.5 days
The month with the highest number of snowfall days is March (14.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in January /
Average sunshine in January
Sierraville, CA
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 5h
The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is January (Average sunshine: 5h).
Average sunshine days in January
Sierraville, CA
- Average sunshine days in January: 16.8 days
The month with the most sunshine days is August (26 days).
The month with the least sunshine days is March (11.8 days).
Average UV index in January
Sierraville, CA
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in January
Sierraville, CA
- Average cloud cover in January: 45
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in January
Sierraville, CA
- Average visibility in January: 4mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (4mi).
Sierraville, California, USA
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