January weather forecast
Walla Walla, WA

The small city of Walla Walla in Washington
The small city of Walla Walla in Washington

Weather in January

January, the same as December, is a wintry winter month in Walla, Washington, with an average temperature varying between 28°F (-2.2°C) and 38.8°F (3.8°C).

Temperature

In January, the average high-temperature is relatively the same as in December - a still wintry 38.8°F (3.8°C). In January, the average low-temperature is 28°F (-2.2°C).

Humidity

January is the most humid month in Walla, with an average relative humidity of 81%.

Rainfall

In Walla, during January, the rain falls for 14.3 days and regularly aggregates up to 1.73" (44mm) of precipitation. 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. In Walla, during January, snow falls for 4.3 days and regularly aggregates up to 2.13" (54mm) of snow. In Walla, Washington, during the entire year, snow falls for 21.1 days and aggregates up to 9.09" (231mm) of snow.

Daylight

The average length of the day in January is 9h and 8min.
On the first day of January, sunrise is at 7:35 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 4:57 pm PST.

Sunshine

The month with the least sunshine is January, with an average of 5.3h of sunshine.

UV index

The months with the lowest UV index in Walla are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 2 in January interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in January in Walla?

In January, in Walla, Washington, the average high-temperature is 38.8°F (3.8°C), and the average low-temperature is 28°F (-2.2°C).

What is the most humid month in Walla?

With an average relative humidity of 81%, January is the most humid month in Walla, Washington.

What is the average humidity in January in Walla?

In January, the average relative humidity in Walla is 81%.

How much does it rain in Walla in January?

In January, in Walla, Washington, the rain falls for 14.3 days. Throughout January, 1.73" (44mm) of precipitation is accumulated.

How much does it snow in Walla in January?

In Walla, during January, snow falls for 4.3 days and regularly aggregates up to 2.13" (54mm) of snow.

What is the average length of the day in January in Walla?

In Walla, the average day length in January is 9h and 8min.

When is the sunrise / sunset in January in Walla?

On the first day of January in Walla, Washington, sunrise is at 7:35 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 4:57 pm PST.

What is the month with the least sunshine in Walla?

With an average of 5.3h of sunshine, January has the least sunshine of the year.

How long on average sun shines in January in Walla?

In January, the average sunshine duration is 5.3h.

What is the month with the lowest UV index in Walla?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Walla.

What is the UV index intensity in January in Walla?

In Walla, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Walla Walla, WA

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).

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Average pressure in January
Walla Walla, WA

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).

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Average wind speed in January
Walla Walla, WA

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).

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Average humidity in January
Walla Walla, WA

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%).

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Average rainfall in January
Walla Walla, WA

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").

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Average rainfall days in January
Walla Walla, WA

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).

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Average snowfall in January
Walla Walla, WA

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").

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Average snowfall days in January
Walla Walla, WA

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).

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Average daylight in January /
Average sunshine in January
Walla Walla, WA

Average daylight in January / Average sunshine in January - Walla Walla, WA
  • Average daylight in January: 9h and 8min

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 43min).

  • Average sunshine in January: 5h and 18min

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).

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Average sunshine days in January
Walla Walla, WA

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).

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Average UV index in January
Walla Walla, WA

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).

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Average cloud cover in January
Walla Walla, WA

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).

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Average visibility in January
Walla Walla, WA

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).

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