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 ushering in of January brings an average high-temperature of a still freezing cold 30.6°F (-0.8°C), closely mirroring the 29.7°F (-1.3°C) of December. In January, Keller encounters an average low-temperature of 18.5°F (-7.5°C) during the night.Humidity
January is the most humid month in Keller, with an average relative humidity of 94%.Rainfall
In Keller, in January, it is raining for 6.3 days, with typically 0.51" (13mm) of accumulated precipitation. Throughout the year, there are 86.6 rainfall days, and 6.38" (162mm) of precipitation is accumulated.Snowfall
January through April, September, November and December are months with snowfall. The month with the most snowfall is January, when snow falls for 5.3 days and typically aggregates up to 1.42" (36mm) of snow.Daylight
The average length of the day in January is 8h and 54min.On the first day of the month, sunrise is at 7:44 am and sunset at 4:11 pm. On the last day of January, sunrise is at 7:23 am and sunset at 4:52 pm PST.
Sunshine
With an average of 3.7h of sunshine, January has the least sunshine of the year.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Keller. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 1 in January converts into the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is January in Keller?
What is the most humid month?
What is the average humidity in January?
How many days does it rain in January?
When does it snow the most?
How much does it snow in January?
How many hours of daylight does Keller have in January?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
What are the months with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Keller, WA
- Average high temperature in January: 30.6°F
The warmest month (with the highest average high temperature) is August (82.8°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in January: 18.5°F
The month with the highest average low temperature is August (52.3°F).
The coldest months (with the lowest average low temperature) are February and December (18.3°F).
Average pressure in January
Keller, WA
- Average pressure in January: 30.19"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in January
Keller, WA
- Average wind speed in January: 3.4mph
The windiest month (with the highest average wind speed) is April (4.6mph).
The calmest months (with the lowest average wind speed) are January and December (3.4mph).
Average humidity in January
Keller, WA
- Average humidity in January: 94%
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (47%).
Average rainfall in January
Keller, WA
- Average rainfall in January: 0.51"
The wettest month (with the highest rainfall) is May (1.06").
The driest month (with the least rainfall) is August (0.31").
Average rainfall days in January
Keller, WA
- Average rainfall days in January: 6.3 days
The month with the highest number of rainy days is May (11.3 days).
The months with the least rainy days are February and September (5 days).
Average snowfall in January
Keller, WA
- Average snowfall in January: 1.42"
The month with the highest snowfall is January (1.42").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in January
Keller, WA
- Average snowfall days in January: 5.3 days
The month with the highest number of snowfall days is December (7.5 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Keller, WA
- Average daylight in January: 8h and 5min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in January: 3h and 4min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in January
Keller, WA
- Average sunshine days in January: 22.2 days
The month with the most sunshine days is September (23.8 days).
The month with the least sunshine days is June (17.3 days).
Average UV index in January
Keller, WA
- Average UV index in January: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in January
Keller, WA
- Average cloud cover in January: 61
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in January
Keller, WA
- Average visibility in January: 2mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (2mi).
Keller, Washington, USA
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