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 brings an average high-temperature of a still chilly 44.6°F (7°C), subtly diverging from December's 43°F (6.1°C). During January, Tumwater records an average temperature of 34.3°F (1.3°C) at night.Humidity
January, November and December, with an average relative humidity of 89%, are the most humid months.Rainfall
In January, in Tumwater, the rain falls for 18.9 days. Throughout January, 5.71" (145mm) of precipitation is accumulated. Throughout the year, there are 177.4 rainfall days, and 37.05" (941mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Tumwater, in January, snow falls for 1.9 days, with typically accumulated 1.38" (35mm) of snow. In Tumwater, during the entire year, snow falls for 8.7 days and aggregates up to 5.31" (135mm) of snow.Daylight
In January, the average length of the day is 9h and 2min.On the first day of the month, sunrise is at 7:57 am and sunset at 4:32 pm. On the last day of January, in Tumwater, sunrise is at 7:37 am and sunset at 5:12 pm PST.
Sunshine
The average sunshine in January is 3.5h.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 reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In January, the maximum UV index of 2 suggests these recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is January cold in Tumwater?
What is the most humid month in Tumwater?
What is the average humidity in January in Tumwater?
How many days does it rain in January in Tumwater?
How many days does it snow in January in Tumwater?
What is the average length of the day in January in Tumwater?
When are sunrise and sunset in January in Tumwater?
How long on average sun shines in January in Tumwater?
When is the lowest UV index in Tumwater?
How high is the UV index in January in Tumwater?
Average temperature in January
Tumwater, WA
- Average high temperature in January: 44.6°F
The warmest month (with the highest average high temperature) is August (78.6°F).
The month with the lowest average high temperature is December (43°F).
- Average low temperature in January: 34.3°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 (33.4°F).
Average pressure in January
Tumwater, WA
- Average pressure in January: 30.09"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).
Average wind speed in January
Tumwater, WA
- Average wind speed in January: 4.5mph
The windiest months (with the highest average wind speed) are March and November (4.6mph).
The calmest month (with the lowest average wind speed) is September (3.8mph).
Average humidity in January
Tumwater, WA
- Average humidity in January: 89%
The months with the highest relative humidity are January, November and December (89%).
The month with the lowest relative humidity is July (71%).
Average rainfall in January
Tumwater, WA
- Average rainfall in January: 5.71"
The wettest month (with the highest rainfall) is December (5.79").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in January
Tumwater, WA
- Average rainfall days in January: 18.9 days
The month with the highest number of rainy days is March (20.4 days).
The month with the least rainy days is August (5.5 days).
Average snowfall in January
Tumwater, WA
- Average snowfall in January: 1.38"
The month with the highest snowfall is February (2.32").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Tumwater, WA
- Average snowfall days in January: 1.9 days
The month with the highest number of snowfall days is February (3.3 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
Tumwater, 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: 3h and 3min
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 24min).
Average sunshine days in January
Tumwater, WA
- Average sunshine days in January: 9.8 days
The month with the most sunshine days is August (22.4 days).
The month with the least sunshine days is February (8.4 days).
Average UV index in January
Tumwater, 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
Tumwater, WA
- Average cloud cover in January: 65
The months with the most cloud cover are January and December (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in January
Tumwater, WA
- Average visibility in January: 4mi
The months with the highest visibility are June, July and August (5mi).
The months with the lowest visibility are January, February, March, April, May, September, October, November and December (4mi).
Tumwater, Washington, USA
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