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
Yelm records a slight change with January's average high-temperatures adjusting to a still frosty 45.1°F (7.3°C) from December's 43°F (6.1°C). Throughout the nights in January, Yelm experiences an average low-temperature of 34.2°F (1.2°C).Humidity
The months with the highest humidity in Yelm are January, February, November and December, with an average relative humidity of 87%.Rainfall
In Yelm, during January, the rain falls for 17.8 days and regularly aggregates up to 4.92" (125mm) of precipitation. In Yelm, during the entire year, the rain falls for 178.1 days and collects up to 33.82" (859mm) of precipitation.Snowfall
Months with snowfall in Yelm are January through April, November and December. In January, it is snowing for 1.9 days. Throughout January, 1.97" (50mm) of snow is accumulated. In Yelm, Washington, during the entire year, snow falls for 9 days and aggregates up to 6.38" (162mm) of snow.Daylight
In January, the average length of the day is 9h and 2min.On the first day of January, sunrise is at 7:55 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 5:11 pm PST.
Sunshine
January and December, with an average of 4h of sunshine, are months with the least sunshine.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 minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 2 in January interprets into the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Yelm in January?
What are the most humid months?
What is the average humidity in January in Yelm?
How many days does it rain in January?
How many days does it snow in January?
How many hours of daylight does Yelm 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?
What is the month with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Yelm, WA
- Average high temperature in January: 45.1°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 (43°F).
- Average low temperature in January: 34.2°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (32.9°F).
Average pressure in January
Yelm, WA
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in January
Yelm, WA
- Average wind speed in January: 4.9mph
The windiest month (with the highest average wind speed) is January (4.9mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in January
Yelm, WA
- Average humidity in January: 87%
The months with the highest relative humidity are January, February, November and December (87%).
The month with the lowest relative humidity is July (70%).
Average rainfall in January
Yelm, WA
- Average rainfall in January: 4.92"
The wettest month (with the highest rainfall) is December (5.28").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in January
Yelm, WA
- Average rainfall days in January: 17.8 days
The month with the highest number of rainy days is March (20.2 days).
The month with the least rainy days is August (5.3 days).
Average snowfall in January
Yelm, WA
- Average snowfall in January: 1.97"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Yelm, WA
- Average snowfall days in January: 1.9 days
The month with the highest number of snowfall days is February (3.2 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
Yelm, WA
- Average daylight in January: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in January: 4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 4h and 0min).
Average sunshine days in January
Yelm, WA
- Average sunshine days in January: 11.1 days
The month with the most sunshine days is August (23.4 days).
The months with the least sunshine days are February and March (8.8 days).
Average UV index in January
Yelm, 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
Yelm, WA
- Average cloud cover in January: 59
The months with the most cloud cover are January, February, March and December (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in January
Yelm, WA
- Average visibility in January: 4mi
The months with the highest visibility are April, May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, November and December (4mi).
Yelm, Washington, USA
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