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
Olympia records a slight change with January's average high-temperatures adjusting to a still chilly 44.6°F (7°C) from December's 43°F (6.1°C). In Olympia, January nights witness a steady temperature drop to a cold 34.3°F (1.3°C).Humidity
The months with the highest humidity in Olympia, Washington, are January, November and December, with an average relative humidity of 89%.Rainfall
In January, in Olympia, the rain falls for 18.9 days. Throughout January, 5.71" (145mm) of precipitation is accumulated. In Olympia, during the entire year, the rain falls for 177.4 days and collects up to 37.05" (941mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Olympia, during January, snow falls for 1.9 days and regularly aggregates up to 1.38" (35mm) of snow. Throughout the year, in Olympia, there are 8.7 snowfall days, and 5.31" (135mm) of snow is accumulated.Daylight
In January, the average length of the day in Olympia is 9h and 1min.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, sunrise is at 7:37 am and sunset at 5:12 pm PST.
Sunshine
The average sunshine in January is 3.5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Olympia. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: The UV index of 2 during January leads to these advisories:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. To protect against the Sun's most potent rays, avoid direct exposure around midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in Olympia in January?
What are the most humid months in Olympia?
What is the average humidity in January in Olympia?
How much does it rain in Olympia in January?
How much does it snow in Olympia in January?
What is the average length of the day in January in Olympia?
When is the sunrise / sunset in January in Olympia?
How many hours of sunshine does Olympia have in January?
What is the month with the lowest UV index in Olympia?
What is the UV index reading in January in Olympia?
Average temperature in January
Olympia, 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
Olympia, 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
Olympia, 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
Olympia, 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
Olympia, 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
Olympia, 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
Olympia, 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
Olympia, 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
Olympia, 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
Olympia, 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
Olympia, 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
Olympia, 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
Olympia, 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).
Olympia, Washington, USA
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