January weather forecast
Fairfield, WA

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Weather in January

January, the same as December, is an icy winter month in Fairfield, Washington, with an average temperature ranging between min 22.6°F (-5.2°C) and max 33.3°F (0.7°C).

Temperature

On the advent of January, Fairfield's average high-temperature exhibits a minor adjustment to a still wintry 33.3°F (0.7°C) from December's 32°F (0°C). In Fairfield, January is marked by an average low-temperature of 22.6°F (-5.2°C).

Humidity

The most humid month is January, with an average relative humidity of 91%.

Rainfall

January is the month with the most rainfall. Rain falls for 9.7 days and accumulates 2.28" (58mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. January is the month with the most snowfall. Snow falls for 13.3 days and accumulates 10.51" (267mm) of snow.

Daylight

The average length of the day in January is 8h and 59min.
On the first day of the month, sunrise is at 7:35 am and sunset at 4:08 pm. On the last day of January, sunrise is at 7:15 am and sunset at 4:48 pm PST.

Sunshine

The months with the least sunshine are January and December, with an average of 3.8h 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 exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 2 during January translates into the following directions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.

Frequently asked questions

How cold is January?

In Fairfield, in January, the average high-temperature is 33.3°F (0.7°C), and the average low-temperature is 22.6°F (-5.2°C).

What is the most humid month?

The most humid month is January, with an average relative humidity of 91%.

What is the average humidity in January?

In January, the average relative humidity is 91%.

What is the wettest month in Fairfield?

The month with the most rainfall is January, when the rain falls for 9.7 days and typically aggregates up to 2.28" (58mm) of precipitation.

How much does it rain in January?

In Fairfield, Washington, during January, the rain falls for 9.7 days and regularly aggregates up to 2.28" (58mm) of precipitation.

When does it snow the most?

January is the month with the most snowfall. Snow falls for 13.3 days and accumulates 10.51" (267mm) of snow.

How much does it snow in January?

In Fairfield, during January, snow falls for 13.3 days and regularly aggregates up to 10.51" (267mm) of snow.

How many hours of daylight does Fairfield have in January?

In January, the average day length is 8h and 59min.

What time are sunrise and sunset in January?

On the first day of January, sunrise is at 7:35 am and sunset at 4:08 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:48 pm PST.

What are the months with the least sunshine?

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

How long on average sun shines in January?

The average sunshine duration in January is 3.8h.

What is the UV index intensity in January?

In January, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability 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
Fairfield, WA

Average temperature in January - Fairfield, WA
  • Average high temperature in January: 33.3°F

The warmest month (with the highest average high temperature) is August (83.3°F).
The month with the lowest average high temperature is December (32°F).

  • Average low temperature in January: 22.6°F

The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).

Average pressure in January
Fairfield, WA

Average pressure in January - Fairfield, WA
  • Average pressure in January: 30.19"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

Average wind speed in January
Fairfield, WA

Average wind speed in January - Fairfield, WA
  • Average wind speed in January: 4.8mph

The windiest month (with the highest average wind speed) is April (6.1mph).
The calmest month (with the lowest average wind speed) is December (4.7mph).

Average humidity in January
Fairfield, WA

Average humidity in January - Fairfield, WA
  • Average humidity in January: 91%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (43%).

Average rainfall in January
Fairfield, WA

Average rainfall in January - Fairfield, WA
  • Average rainfall in January: 2.28"

The wettest month (with the highest rainfall) is January (2.28").
The driest months (with the least rainfall) are July and August (0.35").

Average rainfall days in January
Fairfield, WA

Average rainfall days in January - Fairfield, WA
  • Average rainfall days in January: 9.7 days

The month with the highest number of rainy days is March (16 days).
The month with the least rainy days is July (5.1 days).

Average snowfall in January
Fairfield, WA

Average snowfall in January - Fairfield, WA
  • Average snowfall in January: 10.51"

The month with the highest snowfall is January (10.51").
The months with the least snowfall are June, July and August (0").

Average snowfall days in January
Fairfield, WA

Average snowfall days in January - Fairfield, WA
  • Average snowfall days in January: 13.3 days

The month with the highest number of snowfall days is December (13.9 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in January / Average sunshine in January - Fairfield, WA
  • Average daylight in January: 9h and 0min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in January: 3h and 5min

The month with the most sunshine is August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 3h and 48min).

Average sunshine days in January
Fairfield, WA

Average sunshine days in January - Fairfield, WA
  • Average sunshine days in January: 13.2 days

The month with the most sunshine days is July (24.3 days).
The month with the least sunshine days is March (10.3 days).

Average UV index in January
Fairfield, WA

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

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in January
Fairfield, WA

Average cloud cover in January - Fairfield, WA
  • Average cloud cover in January: 62

The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 13).

Average visibility in January
Fairfield, WA

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

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

Fairfield, Washington, USA

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