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
In the transition from December to January, Walla reports an average high-temperature of a still icy 38.8°F (3.8°C), indicating a close resemblance to the prior month. An average low-temperature of 28°F (-2.2°C) is observed during January nights in Walla.Humidity
The most humid month in Walla is January, with an average relative humidity of 81%.Rainfall
In Walla, in January, during 14.3 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. Throughout the year, in Walla, there are 141.7 rainfall days, and 15.12" (384mm) of precipitation is accumulated.Snowfall
January through April, September, November and December are months with snowfall in Walla, Washington. In Walla, in January, during 4.3 snowfall days, 2.13" (54mm) of snow is typically accumulated. Throughout the year, there are 21.1 snowfall days, and 9.09" (231mm) of snow is accumulated.Daylight
In January, the average length of the day in Walla is 9h and 8min.On the first day of the month, sunrise is at 7:35 am and sunset at 4:18 pm. On the last day of January, in Walla, sunrise is at 7:17 am and sunset at 4:56 pm PST.
Sunshine
With an average of 5.3h of sunshine, January has the least sunshine of the year in Walla.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Walla. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum UV index of 2 in January translates into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be vigilant! The reflective nature of snow can increase 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 in Walla?
What is the most humid month in Walla?
What is the average humidity in January in Walla?
How much does it rain in Walla in January?
How much does it snow in Walla in January?
How many hours of daylight does Walla have in January?
When are sunrise and sunset in January in Walla?
What is the month with the least sunshine in Walla?
How many hours of sunshine does Walla have in January?
What is the month with the lowest UV index in Walla?
What is the UV index intensity in January in Walla?
Average temperature in January
Walla Walla, WA
- Average high temperature in January: 38.8°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (37.4°F).
- Average low temperature in January: 28°F
The month with the highest average low temperature is August (60.8°F).
The coldest month (with the lowest average low temperature) is December (27°F).
Average pressure in January
Walla Walla, WA
- Average pressure in January: 30.2"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).
Average wind speed in January
Walla Walla, WA
- Average wind speed in January: 6.3mph
The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest month (with the lowest average wind speed) is September (5.9mph).
Average humidity in January
Walla Walla, WA
- Average humidity in January: 81%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (39%).
Average rainfall in January
Walla Walla, WA
- Average rainfall in January: 1.73"
The wettest month (with the highest rainfall) is March (2.01").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in January
Walla Walla, WA
- Average rainfall days in January: 14.3 days
The month with the highest number of rainy days is March (17.4 days).
The month with the least rainy days is July (4.9 days).
Average snowfall in January
Walla Walla, WA
- Average snowfall in January: 2.13"
The month with the highest snowfall is February (2.91").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in January
Walla Walla, WA
- Average snowfall days in January: 4.3 days
The months with the highest number of snowfall days are February and December (6.1 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Walla Walla, 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 August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in January
Walla Walla, WA
- Average sunshine days in January: 12.8 days
The month with the most sunshine days is July (24.4 days).
The month with the least sunshine days is February (10 days).
Average UV index in January
Walla Walla, 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
Walla Walla, WA
- Average cloud cover in January: 44
The months with the most cloud cover are January, February and December (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in January
Walla Walla, 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).
Walla Walla, Washington, USA
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