January weather forecast
Summitview, WA

January

Weather in January

January, the same as December, is a wintry winter month in Summitview, Washington, with an average temperature fluctuating between 3.1°C and -3°C.

Temperature

The arrival of January sees a recorded average high-temperature of a still cold 3.1°C, showing little divergence from the previous month's conditions. An average minimum temperature of -3°C is recorded during the month of January.

Humidity

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

Rainfall

January is the month with the most rainfall. Rain falls for 10.3 days and accumulates 22mm of precipitation.

Snowfall

January through March, September, November and December are months with snowfall in Summitview. In January, it is snowing for 4.5 days. Throughout January, 52mm of snow is accumulated. Throughout the year, there are 18.5 snowfall days, and 198mm of snow is accumulated.

Daylight

In January, the average length of the day is 9h and 4min.
On the first day of January in Summitview, sunrise is at 7:46 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:04 pm PST.

Sunshine

January has the least sunshine of the year, with an average of 5.6h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 2 in January interprets into the following advice:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is January cold in Summitview?
In January, in Summitview, the average high-temperature is 3.1°C, and the average low-temperature is -3°C.
What is the most humid month in Summitview?
January is the most humid month in Summitview, Washington, with an average relative humidity of 81%.
What is the average humidity in January in Summitview?
In January, the average relative humidity in Summitview, Washington, is 81%.
What is the wettest month in Summitview?
January is the month with the most rainfall. Rain falls for 10.3 days and accumulates 22mm of precipitation.
How much does it rain in Summitview in January?
In Summitview, in January, during 10.3 rainfall days, 22mm of precipitation is typically accumulated.
How many days does it snow in January in Summitview?
In Summitview, in January, during 4.5 snowfall days, 52mm of snow is typically accumulated.
How many hours of daylight does Summitview have in January?
In January, the average day length in Summitview is 9h and 4min.
When is the sunrise / sunset in January in Summitview?
In January, on the first day of the month, sunrise is at 7:46 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:04 pm PST.
What is the month with the least sunshine in Summitview?
The month with the least sunshine in Summitview is January, with an average of 5.6h of sunshine.
How long on average sun shines in January in Summitview?
The average sunshine duration in January in Summitview is 5.6h.
What is the month with the lowest UV index in Summitview?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Summitview.
What is the UV index reading in January in Summitview?
The average daily maximum UV index in January in Summitview, Washington, is 2. A UV Index reading of 2, and below, represents a low health threat from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in January - Summitview, WA
Average temperature in January
Summitview, WA
  • Average high temperature in January: 3.1°C

The warmest month (with the highest average high temperature) is August (30.3°C).
The month with the lowest average high temperature is December (2.7°C).

  • Average low temperature in January: -3°C

The month with the highest average low temperature is August (15.7°C).
The coldest month (with the lowest average low temperature) is December (-3.6°C).

Average pressure in January - Summitview, WA
Average pressure in January
Summitview, WA
  • Average pressure in January: 1021.3mbar

The month with the highest atmospheric pressure is January (1021.3mbar).
The month with the lowest atmospheric pressure is August (1013.7mbar).

Average wind speed in January - Summitview, WA
Average wind speed in January
Summitview, WA
  • Average wind speed in January: 7.3km/h

The windiest month (with the highest average wind speed) is June (11.4km/h).
The calmest month (with the lowest average wind speed) is December (7.1km/h).

Average humidity in January - Summitview, WA
Average humidity in January
Summitview, WA
  • Average humidity in January: 81%

The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (39%).

Average rainfall in January - Summitview, WA
Average rainfall in January
Summitview, WA
  • Average rainfall in January: 22mm

The wettest month (with the highest rainfall) is January (22mm).
The driest month (with the least rainfall) is July (2mm).

Average rainfall days in January - Summitview, WA
Average rainfall days in January
Summitview, WA
  • Average rainfall days in January: 10.3 days

The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is August (2 days).

Average snowfall in January - Summitview, WA
Average snowfall in January
Summitview, WA
  • Average snowfall in January: 52mm

The month with the highest snowfall is December (70mm).
The months with the least snowfall are April, May, June, July, August and October (0mm).

Average snowfall days in January - Summitview, WA
Average snowfall days in January
Summitview, WA
  • Average snowfall days in January: 4.5 days

The month with the highest number of snowfall days is December (5.4 days).
The months with the least snowfall days are May, June, July, August and October (0 days).

Average daylight in January / Average sunshine in January - Summitview, WA
Average daylight in January /
Average sunshine in January
Summitview, WA
  • Average daylight in January: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in January: 5h and 4min

The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).

Average sunshine days in January - Summitview, WA
Average sunshine days in January
Summitview, WA
  • Average sunshine days in January: 17 days

The month with the most sunshine days is July (27.5 days).
The month with the least sunshine days is February (15.8 days).

Average UV index in January - Summitview, WA
Average UV index in January
Summitview, 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 - Summitview, WA
Average cloud cover in January
Summitview, WA
  • Average cloud cover in January: 40

The month with the most cloud cover is January (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 9).

Average visibility in January - Summitview, WA
Average visibility in January
Summitview, WA
  • Average visibility in January: 8km

The months with the highest visibility are March, April, May, June, July, August, September and October (10km).
The month with the lowest visibility is January (8km).

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