January weather forecast
Hillside Siding, WA

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Weather in January

January, like December, in Hillside Siding, Washington, is an icy winter month, with temperature in the range of an average low of 25.5°F (-3.6°C) and an average high of 36.1°F (2.3°C).

Temperature

January's onset records an average high-temperature of a still cold 36.1°F (2.3°C), a near match to December's 36°F (2.2°C). During January, the temperature is averaged to a low of 25.5°F (-3.6°C) at night.

Humidity

January is the most humid month, with an average relative humidity of 83%.

Rainfall

In January, the rain falls for 10.5 days. Throughout January, 0.83" (21mm) of precipitation is accumulated. In Hillside Siding, during the entire year, the rain falls for 87.6 days and collects up to 5.94" (151mm) of precipitation.

Snowfall

January through April, September, November and December are months with snowfall. In Hillside Siding, Washington, during January, snow falls for 4.4 days and regularly aggregates up to 1.89" (48mm) of snow. In Hillside Siding, during the entire year, snow falls for 19.9 days and aggregates up to 8.62" (219mm) of snow.

Daylight

The average length of the day in January is 9h and 4min.
On the first day of January, sunrise is at 7:46 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:03 pm PST.

Sunshine

January has the least sunshine of the year, with an average of 5.5h of sunshine.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 2 in January interprets into the following advice:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. To cut down UV radiation exposure by about half, sport a wide-brim hat. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.

Frequently asked questions

How cold is January?

The average high-temperature and low-temperature during January are 36.1°F (2.3°C) and 25.5°F (-3.6°C) respectively.

What is the most humid month?

With an average relative humidity of 83%, January is the most humid month.

What is the average humidity in January?

The average relative humidity in January is 83%.

How much does it rain in January?

In January, the rain falls for 10.5 days. Throughout January, 0.83" (21mm) of precipitation is accumulated.

How much does it snow in January?

In January, in Hillside Siding, it is snowing for 4.4 days. Throughout January, 1.89" (48mm) of snow is accumulated.

What is the average length of the day in January?

In Hillside Siding, the average day length in January is 9h and 4min.

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 7:46 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:03 pm PST.

What is the month with the least sunshine?

With an average of 5.5h of sunshine, January has the least sunshine of the year.

How many hours of sunshine does Hillside Siding have in January?

The average sunshine duration in January is 5.5h.

What is the month with the lowest UV index?

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

What is the UV index reading in January?

In January, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from 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
Hillside Siding, WA

Average temperature in January - Hillside Siding, WA
  • Average high temperature in January: 36.1°F

The warmest month (with the highest average high temperature) is August (85.1°F).
The month with the lowest average high temperature is December (36°F).

  • Average low temperature in January: 25.5°F

The month with the highest average low temperature is August (58.8°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).

Average pressure in January
Hillside Siding, WA

Average pressure in January - Hillside Siding, WA
  • Average pressure in January: 30.16"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).

Average wind speed in January
Hillside Siding, WA

Average wind speed in January - Hillside Siding, WA
  • Average wind speed in January: 4.3mph

The windiest month (with the highest average wind speed) is June (7.4mph).
The calmest month (with the lowest average wind speed) is December (4.2mph).

Average humidity in January
Hillside Siding, WA

Average humidity in January - Hillside Siding, WA
  • Average humidity in January: 83%

The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are July and August (41%).

Average rainfall in January
Hillside Siding, WA

Average rainfall in January - Hillside Siding, WA
  • Average rainfall in January: 0.83"

The wettest month (with the highest rainfall) is December (0.87").
The driest month (with the least rainfall) is July (0.08").

Average rainfall days in January
Hillside Siding, WA

Average rainfall days in January - Hillside Siding, WA
  • Average rainfall days in January: 10.5 days

The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is July (2.3 days).

Average snowfall in January
Hillside Siding, WA

Average snowfall in January - Hillside Siding, WA
  • Average snowfall in January: 1.89"

The month with the highest snowfall is December (3.07").
The months with the least snowfall are May, June, July, August and October (0").

Average snowfall days in January
Hillside Siding, WA

Average snowfall days in January - Hillside Siding, WA
  • Average snowfall days in January: 4.4 days

The month with the highest number of snowfall days is December (5.7 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
Hillside Siding, WA

Average daylight in January / Average sunshine in January - Hillside Siding, 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 3min

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 30min).

Average sunshine days in January
Hillside Siding, WA

Average sunshine days in January - Hillside Siding, WA
  • Average sunshine days in January: 16.7 days

The month with the most sunshine days is July (27.6 days).
The month with the least sunshine days is February (15.5 days).

Average UV index in January
Hillside Siding, WA

Average UV index in January - Hillside Siding, WA
  • Average UV index in January: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in January
Hillside Siding, WA

Average cloud cover in January - Hillside Siding, 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
Hillside Siding, WA

Average visibility in January - Hillside Siding, WA
  • Average visibility in January: 5mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

Hillside Siding, Washington, USA

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