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 onset of January in Kennewick marks an average high-temperature of a still icy 39°F (3.9°C), hardly differing from December's 38.3°F (3.5°C). In Kennewick, January nights witness a steady temperature drop to a subzero cold 28.8°F (-1.8°C).Humidity
The most humid month is January, with an average relative humidity of 80%.Rainfall
In January, the rain falls for 10.8 days. Throughout January, 0.91" (23mm) of precipitation is accumulated. In Kennewick, during the entire year, the rain falls for 102.8 days and collects up to 7.32" (186mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Kennewick, in January, snow falls for 2.3 days, with typically accumulated 1.02" (26mm) of snow. Throughout the year, in Kennewick, there are 9.7 snowfall days, and 5.2" (132mm) of snow is accumulated.Daylight
In Kennewick, the average length of the day in January is 9h and 7min.On the first day of January, sunrise is at 7:39 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:59 pm PST.
Sunshine
January has the least sunshine of the year, with an average of 5.4h of 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 of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: The UV index of 2 during January leads to these advisories:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is January?
What is the most humid month?
What is the average humidity in January?
How much does it rain in January?
How many days does it snow in January in Kennewick?
What is the average length of the day in January?
What time are sunrise and sunset in January in Kennewick?
What is the month with the least sunshine in Kennewick?
How many hours of sunshine does Kennewick have in January?
When is the lowest UV index?
How high is the UV index in January?
Average temperature in January
Kennewick, WA
- Average high temperature in January: 39°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is December (38.3°F).
- Average low temperature in January: 28.8°F
The month with the highest average low temperature is August (64°F).
The coldest month (with the lowest average low temperature) is December (27.9°F).
Average pressure in January
Kennewick, WA
- Average pressure in January: 30.19"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in January
Kennewick, WA
- Average wind speed in January: 6.3mph
The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is December (5.8mph).
Average humidity in January
Kennewick, WA
- Average humidity in January: 80%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is July (35%).
Average rainfall in January
Kennewick, WA
- Average rainfall in January: 0.91"
The wettest months (with the highest rainfall) are March and December (0.94").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in January
Kennewick, WA
- Average rainfall days in January: 10.8 days
The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is July (3.5 days).
Average snowfall in January
Kennewick, WA
- Average snowfall in January: 1.02"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Kennewick, WA
- Average snowfall days in January: 2.3 days
The month with the highest number of snowfall days is December (3.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Kennewick, WA
- Average daylight in January: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in January: 5h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in January
Kennewick, WA
- Average sunshine days in January: 16.4 days
The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is March (15.4 days).
Average UV index in January
Kennewick, WA
- Average UV index in January: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Kennewick, WA
- Average cloud cover in January: 44
The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in January
Kennewick, 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).
Kennewick, Washington, USA
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