January weather forecast
Mossyrock, WA

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Weather in January

January in Mossyrock, Washington, is a frosty winter month, with temperature in the range of an average high of 43.3°F (6.3°C) and an average low of 32.2°F (0.1°C).

Temperature

The dawn of January sees an average high-temperature of a chilly 43.3°F (6.3°C), subtly contrasting with December's 41.2°F (5.1°C). January generally records an average low-temperature of 32.2°F (0.1°C).

Humidity

In Mossyrock, the average relative humidity in January is 87%.

Rainfall

The month with the most rainfall is January, when the rain falls for 17.5 days and typically aggregates up to 6.46" (164mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. January is the month with the most snowfall. Snow falls for 3.3 days and accumulates 5.51" (140mm) of snow.

Daylight

In Mossyrock, the average length of the day in January is 9h and 5min.
On the first day of the month, sunrise is at 7:53 am and sunset at 4:33 pm. On the last day of January, sunrise is at 7:34 am and sunset at 5:11 pm PST.

Sunshine

January and February, with an average of 3.8h of sunshine, are months with the least sunshine.

UV index

In January, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In January, the UV index of 2 transforms into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in January?

The high-temperature, in January, in Mossyrock, is 43.3°F (6.3°C), while the low-temperature averages to 32.2°F (0.1°C).

What is the average humidity in January?

In January, the average relative humidity is 87%.

What is the rainiest month?

January is the month with the most rainfall. Rain falls for 17.5 days and accumulates 6.46" (164mm) of precipitation.

How many days does it rain in January in Mossyrock?

In January, in Mossyrock, the rain falls for 17.5 days. Throughout January, 6.46" (164mm) of precipitation is accumulated.

When does it snow the most?

January is the month with the most snowfall. Snow falls for 3.3 days and accumulates 5.51" (140mm) of snow.

How many days does it snow in January in Mossyrock?

In Mossyrock, in January, during 3.3 snowfall days, 5.51" (140mm) of snow is typically accumulated.

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

In January, the average day length is 9h and 5min.

When is the sunrise / sunset in January?

On the first day of January, sunrise is at 7:53 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 5:11 pm PST.

What is the month with the least sunshine?

The months with the least sunshine are January and February, with an average of 3.8h of sunshine.

How long on average sun shines in January?

In January, the average sunshine duration is 3.8h.

What is the UV index reading in January?

In January, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health threat from exposure to the Sun's 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
Mossyrock, WA

Average temperature in January - Mossyrock, WA
  • Average high temperature in January: 43.3°F

The warmest month (with the highest average high temperature) is August (75.9°F).
The month with the lowest average high temperature is December (41.2°F).

  • Average low temperature in January: 32.2°F

The month with the highest average low temperature is August (47.3°F).
The coldest month (with the lowest average low temperature) is December (30.7°F).

Average pressure in January
Mossyrock, WA

Average pressure in January - Mossyrock, WA
  • Average pressure in January: 30.11"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

Average wind speed in January
Mossyrock, WA

Average wind speed in January - Mossyrock, WA
  • Average wind speed in January: 5.3mph

The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).

Average humidity in January
Mossyrock, WA

Average humidity in January - Mossyrock, WA
  • Average humidity in January: 87%

The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is July (71%).

Average rainfall in January
Mossyrock, WA

Average rainfall in January - Mossyrock, WA
  • Average rainfall in January: 6.46"

The wettest month (with the highest rainfall) is January (6.46").
The driest month (with the least rainfall) is July (0.43").

Average rainfall days in January
Mossyrock, WA

Average rainfall days in January - Mossyrock, WA
  • Average rainfall days in January: 17.5 days

The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is July (6.3 days).

Average snowfall in January
Mossyrock, WA

Average snowfall in January - Mossyrock, WA
  • Average snowfall in January: 5.51"

The month with the highest snowfall is January (5.51").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Mossyrock, WA

Average snowfall days in January - Mossyrock, WA
  • Average snowfall days in January: 3.3 days

The month with the highest number of snowfall days is February (6 days).
The months with the least snowfall days are June, July, August and October (0 days).

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

Average daylight in January / Average sunshine in January - Mossyrock, 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: 3h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 3h and 48min).

Average sunshine days in January
Mossyrock, WA

Average sunshine days in January - Mossyrock, WA
  • Average sunshine days in January: 11.1 days

The month with the most sunshine days is August (23.2 days).
The month with the least sunshine days is February (8.2 days).

Average UV index in January
Mossyrock, WA

Average UV index in January - Mossyrock, WA
  • Average UV index in January: 2

The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is November (UV index 1).

Average cloud cover in January
Mossyrock, WA

Average cloud cover in January - Mossyrock, WA
  • Average cloud cover in January: 60

The month with the most cloud cover is March (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in January
Mossyrock, WA

Average visibility in January - Mossyrock, WA
  • Average visibility in January: 4mi

The months with the highest visibility are July, August and September (5mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (4mi).

Mossyrock, Washington, USA

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