January weather forecast
Richland, WA

Weather in January

January, like December, in Richland, Washington, is another cold winter month, with an average temperature ranging between max 38.8°F (3.8°C) and min 28.8°F (-1.8°C).

Temperature

In January, the average high-temperature is relatively the same as in December - a still wintry 38.8°F (3.8°C). The average low-temperature, in Richland, is 28.8°F (-1.8°C).

Humidity

The most humid month is January, with an average relative humidity of 81%.

Rainfall

In January, the rain falls for 10.9 days. Throughout January, 0.91" (23mm) of precipitation is accumulated. Throughout the year, there are 100.2 rainfall days, and 7.05" (179mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall in Richland. In January, it is snowing for 2.5 days. Throughout January, 1.06" (27mm) of snow is accumulated. In Richland, during the entire year, snow falls for 10.4 days and aggregates up to 5.35" (136mm) of snow.

Daylight

In January, the average length of the day is 9h and 7min.
On the first day of the month, sunrise is at 7:40 am and sunset at 4:21 pm. On the last day of January, in Richland, sunrise is at 7:21 am and sunset at 5:00 pm PST.

Sunshine

The month with the least sunshine is January, with an average of 5.4h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Richland. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 2 in January interpret 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. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in January in Richland?

In Richland, Washington, in January, the average high-temperature is 38.8°F (3.8°C), and the average low-temperature is 28.8°F (-1.8°C).

What is the most humid month in Richland?

With an average relative humidity of 81%, January is the most humid month in Richland, Washington.

What is the average humidity in January in Richland?

The average relative humidity in January in Richland, Washington, is 81%.

How much does it rain in Richland in January?

In Richland, during January, the rain falls for 10.9 days and regularly aggregates up to 0.91" (23mm) of precipitation.

How many days does it snow in January in Richland?

In Richland, in January, during 2.5 snowfall days, 1.06" (27mm) of snow is typically accumulated.

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

The average day length in January in Richland is 9h and 7min.

What time are sunrise and sunset in January in Richland?

In January, on the first day of the month, sunrise is at 7:40 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:00 pm PST.

What is the month with the least sunshine in Richland?

The month with the least sunshine in Richland, Washington, is January, with an average of 5.4h of sunshine.

How long on average sun shines in January in Richland?

In January, the average sunshine duration is 5.4h.

What are the months with the lowest UV index in Richland?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

What is the UV index intensity in January in Richland?

In Richland, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to Sun's UV rays.
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
Richland, WA

Average temperature in January - Richland, WA
  • Average high temperature in January: 38.8°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is December (38.1°F).

  • Average low temperature in January: 28.8°F

The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is December (27.5°F).

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Average pressure in January
Richland, WA

Average pressure in January - Richland, WA
  • Average pressure in January: 30.18"Hg

The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

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Average wind speed in January
Richland, WA

Average wind speed in January - Richland, WA
  • Average wind speed in January: 6mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is December (5.6mph).

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Average humidity in January
Richland, WA

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

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is July (35%).

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Average rainfall in January
Richland, WA

Average rainfall in January - Richland, WA
  • Average rainfall in January: 0.91"

The wettest month (with the highest rainfall) is December (0.94").
The driest months (with the least rainfall) are July and September (0.2").

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Average rainfall days in January
Richland, WA

Average rainfall days in January - Richland, WA
  • Average rainfall days in January: 10.9 days

The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is July (3.5 days).

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Average snowfall in January
Richland, WA

Average snowfall in January - Richland, WA
  • Average snowfall in January: 1.06"

The month with the highest snowfall is February (2.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in January
Richland, WA

Average snowfall days in January - Richland, WA
  • Average snowfall days in January: 2.5 days

The month with the highest number of snowfall days is December (3.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in January / Average sunshine in January - Richland, WA
  • Average daylight in January: 9h and 7min

The month with the longest days is June (Average daylight: 15h and 44min).
The month with the shortest days is December (Average daylight: 8h and 41min).

  • Average sunshine in January: 5h and 24min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).

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Average sunshine days in January
Richland, WA

Average sunshine days in January - Richland, WA
  • Average sunshine days in January: 16.2 days

The month with the most sunshine days is July (25.7 days).
The months with the least sunshine days are February and March (15.3 days).

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Average UV index in January
Richland, WA

Average UV index in January - Richland, 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).

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Average cloud cover in January
Richland, WA

Average cloud cover in January - Richland, WA
  • Average cloud cover in January: 44

The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 9).

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Average visibility in January
Richland, WA

Average visibility in January - Richland, WA
  • Average visibility in January: 6mi

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

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