January weather forecastTumtum, WA

January

Weather in January

January is an icy winter month in Tumtum, Washington, with an average temperature ranging between min 21.2°F (-6°C) and max 32.4°F (0.2°C).

Temperature

Upon the beginning of January, Tumtum's high-temperatures register at an icy 32.4°F (0.2°C), closely mirroring the preceding month. During January, an average low-temperature of 21.2°F (-6°C) is observed.

Humidity

With an average relative humidity of 92%, January is the most humid month.

Rainfall

January is the month with the most rainfall. Rain falls for 8.8 days and accumulates 2.4" (61mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. The month with the most snowfall is January, when snow falls for 16 days and typically aggregates up to 13.23" (336mm) of snow.

Daylight

In January, the average length of the day is 8h and 55min.
On the first day of the month, sunrise is at 7:39 am and sunset at 4:08 pm. On the last day of January, sunrise is at 7:19 am and sunset at 4:48 pm PST.

Sunshine

January has the least sunshine of the year, with an average of 3.4h of sunshine.

UV index

The average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 2 during January translates into the following guidance:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.

Updated: Jun 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Tumtum, in January, the average high-temperature is 32.4°F (0.2°C), and the average low-temperature is 21.2°F (-6°C).

The most humid month is January, with an average relative humidity of 92%.

The average relative humidity in January is 92%.

The month with the most rainfall is January, when the rain falls for 8.8 days and typically aggregates up to 2.4" (61mm) of precipitation.

In Tumtum, in January, during 8.8 rainfall days, 2.4" (61mm) of precipitation is typically accumulated.

The month with the most snowfall is January, when snow falls for 16 days and typically aggregates up to 13.23" (336mm) of snow.

In Tumtum, in January, during 16 snowfall days, 13.23" (336mm) of snow is typically accumulated.

In Tumtum, the average day length in January is 8h and 55min.

On the first day of January, sunrise is at 7:39 am and sunset at 4:08 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:48 pm PST.

With an average of 3.4h of sunshine, January has the least sunshine of the year.

In Tumtum, the average sunshine duration in January is 3.4h.

In Tumtum, Washington, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

31.3°F

32.4°F

35.1°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

4.4mph

4.5mph

4.8mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

11.5

11.6

10.4

Average UV index

Average cloud cover

Average visibility

Average temperature in January
Tumtum, WA

Average high temperature in January: 32.4°F

The warmest month (with the highest average high temperature) is August (84°F).
The month with the lowest average high temperature is December (31.3°F).

Average low temperature in January: 21.2°F

The month with the highest average low temperature is August (54.3°F).
The coldest month (with the lowest average low temperature) is December (20.3°F).

Average pressure in January
Tumtum, 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
Tumtum, WA

Average wind speed in January: 4.1mph

The windiest month (with the highest average wind speed) is April (5.6mph).
The calmest month (with the lowest average wind speed) is December (4mph).

Average humidity in January
Tumtum, WA

Average humidity in January: 92%

The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is August (43%).

Average rainfall in January
Tumtum, WA

Average rainfall in January: 2.4"

The wettest month (with the highest rainfall) is January (2.4").
The driest month (with the least rainfall) is August (0.31").

Average rainfall days in January
Tumtum, WA

Average rainfall days in January: 8.8 days

The month with the highest number of rainy days is March (16.2 days).
The month with the least rainy days is August (5.1 days).

Average snowfall in January
Tumtum, WA

Average snowfall in January: 13.23"

The month with the highest snowfall is January (13.23").
The months with the least snowfall are June, July and August (0").

Average snowfall days in January
Tumtum, WA

Average snowfall days in January: 16 days

The month with the highest number of snowfall days is December (16.9 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in January: 8h and 54min

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 30min).

Average sunshine in January: 3h and 24min

The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

Average sunshine days in January
Tumtum, WA

Average sunshine days in January: 11.6 days

The month with the most sunshine days is July (24.2 days).
The month with the least sunshine days is March (9.7 days).

Average UV index in January
Tumtum, WA

Average UV index in January: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are February, November and December (UV index 1).

Average cloud cover in January
Tumtum, WA

Average cloud cover in January: 64

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 13).

Average visibility in January
Tumtum, WA

Average visibility in January: 3mi

The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).