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
Custer greets January with an average high-temperature of a chilly 43.3°F (6.3°C), marking a slight deviation from the preceding month. In January, Custer's nighttime temperatures demonstrate a slight decrease, stabilizing at an average of 36.3°F (2.4°C).Humidity
The months with the highest humidity are January and November, with an average relative humidity of 83%.Rainfall
In Custer, during January, the rain falls for 18.4 days and regularly aggregates up to 6.26" (159mm) of precipitation. Throughout the year, there are 176.1 rainfall days, and 43.78" (1112mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Custer. In Custer, in January, during 2.3 snowfall days, 1.89" (48mm) of snow is typically accumulated. In Custer, during the entire year, snow falls for 10.5 days and aggregates up to 6.77" (172mm) of snow.Daylight
The average length of the day in January is 8h and 48min.On the first day of the month, sunrise is at 8:04 am and sunset at 4:23 pm. On the last day of January, sunrise is at 7:42 am and sunset at 5:05 pm PST.
Sunshine
January and December, with an average of 3.9h of sunshine, are months with the least sunshine in Custer.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high daily UV index of 2 during January translates into the following directions:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during January?
What are the most humid months?
What is the average humidity in January?
How many days 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?
What are the months with the least sunshine in Custer?
How many hours of sunshine does Custer have in January?
When is the lowest UV index in Custer?
How high is the UV index in January?
Average temperature in January
Custer, WA
- Average high temperature in January: 43.3°F
The warmest month (with the highest average high temperature) is August (70°F).
The month with the lowest average high temperature is December (41.9°F).
- Average low temperature in January: 36.3°F
The month with the highest average low temperature is August (54.9°F).
The coldest month (with the lowest average low temperature) is February (35.8°F).
Average pressure in January
Custer, WA
- Average pressure in January: 30.07"Hg
The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in January
Custer, WA
- Average wind speed in January: 6.2mph
The windiest months (with the highest average wind speed) are November and December (6.3mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in January
Custer, WA
- Average humidity in January: 83%
The months with the highest relative humidity are January and November (83%).
The month with the lowest relative humidity is July (74%).
Average rainfall in January
Custer, WA
- Average rainfall in January: 6.26"
The wettest month (with the highest rainfall) is November (7.13").
The driest month (with the least rainfall) is July (0.67").
Average rainfall days in January
Custer, WA
- Average rainfall days in January: 18.4 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in January
Custer, WA
- Average snowfall in January: 1.89"
The month with the highest snowfall is February (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Custer, WA
- Average snowfall days in January: 2.3 days
The month with the highest number of snowfall days is February (3.7 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
Custer, WA
- Average daylight in January: 8h and 5min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in January: 3h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 54min).
Average sunshine days in January
Custer, WA
- Average sunshine days in January: 10.6 days
The month with the most sunshine days is August (23.2 days).
The month with the least sunshine days is November (8.8 days).
Average UV index in January
Custer, WA
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Custer, WA
- Average cloud cover in January: 58
The months with the most cloud cover are January and December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in January
Custer, WA
- 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).
Custer, Washington, USA
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