January weather forecast
Underwood, WA

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Weather in January

January, the same as December, is a wintry winter month in Underwood, Washington, with temperature in the range of an average low of 27.7°F (-2.4°C) and an average high of 37°F (2.8°C).

Temperature

With the advent of January, Underwood's high-temperatures adjust to a still icy 37°F (2.8°C), closely aligning with the preceding month. During January nights, Underwood witnesses a consistent average temperature of 27.7°F (-2.4°C).

Humidity

In January, the average relative humidity is 87%.

Rainfall

January is the month with the most rainfall. Rain falls for 17.7 days and accumulates 5.67" (144mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. In Underwood, in January, snow falls for 3.4 days, with typically accumulated 3.82" (97mm) of snow. In Underwood, during the entire year, snow falls for 15.1 days and aggregates up to 14.33" (364mm) of snow.

Daylight

The average length of the day in January is 9h and 10min.
On the first day of January, sunrise is at 7:46 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:10 pm PST.

Sunshine

January has the least sunshine of the year, with an average of 3.7h of sunshine.

UV index

The months with the lowest UV index are January, February and November, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index, 1 in January, converts into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Updated: Jun 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in January?

The average high-temperature and low-temperature during January are 37°F (2.8°C) and 27.7°F (-2.4°C) respectively.

What is the average humidity in January?

The average relative humidity in January is 87%.

What is the rainiest month?

January is the month with the most rainfall. Rain falls for 17.7 days and accumulates 5.67" (144mm) of precipitation.

How many days does it rain in January?

In Underwood, in January, it is raining for 17.7 days, with typically 5.67" (144mm) of accumulated precipitation.

How much does it snow in January?

In Underwood, in January, during 3.4 snowfall days, 3.82" (97mm) of snow is typically accumulated.

How many hours of daylight does Underwood have in January?

The average day length in January in Underwood is 9h and 10min.

When is the sunrise / sunset in January?

On the first day of January, sunrise is at 7:46 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:10 pm PST.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 3.7h of sunshine.

How long on average sun shines in January?

In Underwood, the average sunshine duration in January is 3.7h.

What are the months with the lowest UV index?

January, February and November, with an average maximum UV index of 1, are months with the lowest UV index.

How high is the UV index in January?

The average daily maximum UV index in January is 1. A UV Index estimate of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
Average high temperature
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
Underwood, WA

Average temperature in January - Underwood, WA
  • Average high temperature in January: 37°F

The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is December (36°F).

  • Average low temperature in January: 27.7°F

The month with the highest average low temperature is August (51.4°F).
The coldest month (with the lowest average low temperature) is December (27°F).

Average pressure in January
Underwood, WA

Average pressure in January - Underwood, WA
  • Average pressure in January: 30.15"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).

Average wind speed in January
Underwood, WA

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

The windiest month (with the highest average wind speed) is June (6.1mph).
The calmest month (with the lowest average wind speed) is October (4.8mph).

Average humidity in January
Underwood, WA

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

The months with the highest relative humidity are February and December (88%).
The month with the lowest relative humidity is July (59%).

Average rainfall in January
Underwood, WA

Average rainfall in January - Underwood, WA
  • Average rainfall in January: 5.67"

The wettest month (with the highest rainfall) is January (5.67").
The driest month (with the least rainfall) is July (0.28").

Average rainfall days in January
Underwood, WA

Average rainfall days in January - Underwood, WA
  • Average rainfall days in January: 17.7 days

The month with the highest number of rainy days is March (20 days).
The month with the least rainy days is August (4.2 days).

Average snowfall in January
Underwood, WA

Average snowfall in January - Underwood, WA
  • Average snowfall in January: 3.82"

The month with the highest snowfall is February (4.76").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in January
Underwood, WA

Average snowfall days in January - Underwood, WA
  • Average snowfall days in January: 3.4 days

The month with the highest number of snowfall days is December (4.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in January / Average sunshine in January - Underwood, 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: 3h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in January
Underwood, WA

Average sunshine days in January - Underwood, WA
  • Average sunshine days in January: 10.2 days

The month with the most sunshine days is July (25.4 days).
The month with the least sunshine days is March (8.4 days).

Average UV index in January
Underwood, WA

Average UV index in January - Underwood, WA
  • Average UV index in January: 1

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

Average cloud cover in January
Underwood, WA

Average cloud cover in January - Underwood, WA
  • Average cloud cover in January: 64

The months with the most cloud cover are January and February (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 17).

Average visibility in January
Underwood, WA

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

The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (4mi).

Underwood, Washington, USA

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