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
In Chehalis, the average high-temperature in January is almost the same as in December - a chilly 44.6°F (7°C). In Chehalis, the average low-temperature is 33.8°F (1°C).Humidity
January, February, November and December, with an average relative humidity of 89%, are the most humid months in Chehalis.Rainfall
January is the month with the most rainfall. Rain falls for 18.6 days and accumulates 5.51" (140mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Chehalis. In Chehalis, during January, snow falls for 1.8 days and regularly aggregates up to 1.85" (47mm) of snow. Throughout the year, there are 9 snowfall days, and 5.59" (142mm) of snow is accumulated.Daylight
In Chehalis, the average length of the day in January is 9h and 4min.On the first day of the month, sunrise is at 7:56 am and sunset at 4:34 pm. On the last day of January, sunrise is at 7:36 am and sunset at 5:13 pm PST.
Sunshine
The average sunshine in January is 3.6h.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 estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The average daily UV index of 2 in January transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
FAQ
What is the temperature in January in Chehalis?
What is the most humid month in Chehalis?
What is the average humidity in January in Chehalis?
What is the rainiest month in Chehalis?
How many days does it rain in January in Chehalis?
How many days does it snow in January in Chehalis?
How many hours of daylight does Chehalis have in January?
What time are sunrise and sunset in January in Chehalis?
How long on average sun shines in January in Chehalis?
What are the months with the lowest UV index in Chehalis?
What is the UV index intensity in January in Chehalis?
Average temperature in January
Chehalis, WA
- Average high temperature in January: 44.6°F
The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is December (42.6°F).
- Average low temperature in January: 33.8°F
The month with the highest average low temperature is August (50°F).
The coldest month (with the lowest average low temperature) is December (33.1°F).
Average pressure in January
Chehalis, WA
- Average pressure in January: 30.09"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.02"Hg).
Average wind speed in January
Chehalis, WA
- Average wind speed in January: 4.5mph
The windiest months (with the highest average wind speed) are January, March and November (4.5mph).
The calmest month (with the lowest average wind speed) is September (3.6mph).
Average humidity in January
Chehalis, WA
- Average humidity in January: 89%
The months with the highest relative humidity are January, February, November and December (89%).
The month with the lowest relative humidity is July (73%).
Average rainfall in January
Chehalis, WA
- Average rainfall in January: 5.51"
The wettest month (with the highest rainfall) is January (5.51").
The driest month (with the least rainfall) is July (0.47").
Average rainfall days in January
Chehalis, WA
- Average rainfall days in January: 18.6 days
The month with the highest number of rainy days is March (21.5 days).
The month with the least rainy days is August (6.4 days).
Average snowfall in January
Chehalis, WA
- Average snowfall in January: 1.85"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Chehalis, WA
- Average snowfall days in January: 1.8 days
The month with the highest number of snowfall days is February (3.5 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
Chehalis, WA
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 47min).
The month with the shortest days is December (Average daylight: 8h and 38min).
- Average sunshine in January: 3h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in January
Chehalis, WA
- Average sunshine days in January: 9.6 days
The months with the most sunshine days are July and August (20.8 days).
The month with the least sunshine days is February (7.6 days).
Average UV index in January
Chehalis, WA
- Average UV index in January: 2
The month with the highest UV index is 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
Chehalis, WA
- Average cloud cover in January: 65
The months with the most cloud cover are January, February and December (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in January
Chehalis, WA
- Average visibility in January: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
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