January weather forecast
Zillah, WA

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Weather in January

January, like December, in Zillah, Washington, is another cold winter month, with an average temperature fluctuating between 37.2°F (2.9°C) and 27°F (-2.8°C).

Temperature

Zillah experiences an average high-temperature of a still icy 37.2°F (2.9°C) in January, subtly different from December's 36.7°F (2.6°C). Throughout the month of January, Zillah sees a steady low-temperature average of 27°F (-2.8°C).

Humidity

The most humid month in Zillah is January, with an average relative humidity of 82%.

Rainfall

The month with the most rainfall is January, when the rain falls for 10.2 days and typically aggregates up to 1.02" (26mm) of precipitation.

Snowfall

Months with snowfall are January through March, September, November and December. In Zillah, in January, during 4.2 snowfall days, 2.01" (51mm) of snow is typically accumulated. Throughout the year, there are 17.1 snowfall days, and 6.69" (170mm) of snow is accumulated.

Daylight

In Zillah, the average length of the day in January is 9h and 5min.
On the first day of January in Zillah, sunrise is at 7:44 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:03 pm PST.

Sunshine

The month with the least sunshine in Zillah is January, 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 estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 2 in January converts into the following recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is January in Zillah?

During January, Zillah experiences an average high-temperature of 37.2°F (2.9°C) and a low-temperature of 27°F (-2.8°C).

What is the most humid month in Zillah?

The most humid month in Zillah is January, with an average relative humidity of 82%.

What is the average humidity in January in Zillah?

In January, the average relative humidity in Zillah is 82%.

What is the rainiest month in Zillah?

January is the month with the most rainfall in Zillah, Washington. Rain falls for 10.2 days and accumulates 1.02" (26mm) of precipitation.

How many days does it rain in January in Zillah?

In Zillah, Washington, in January, during 10.2 rainfall days, 1.02" (26mm) of precipitation is typically accumulated.

How many days does it snow in January in Zillah?

In Zillah, in January, during 4.2 snowfall days, 2.01" (51mm) of snow is typically accumulated.

How many hours of daylight does Zillah have in January?

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

What time are sunrise and sunset in January in Zillah?

In January, on the first day of the month, sunrise is at 7:44 am and sunset at 4:24 pm. On the last day of the month, in Zillah, Washington, sunrise is at 7:25 am and sunset at 5:03 pm PST.

What is the month with the least sunshine in Zillah?

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

How long on average sun shines in January in Zillah?

In January, the average sunshine duration in Zillah, Washington, is 5.5h.

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

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

How high is the UV index in January in Zillah?

In Zillah, the average daily maximum UV index in January 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
Zillah, WA

Average temperature in January - Zillah, WA
  • Average high temperature in January: 37.2°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (36.7°F).

  • Average low temperature in January: 27°F

The month with the highest average low temperature is August (60.8°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).

Average pressure in January
Zillah, WA

Average pressure in January - Zillah, 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
Zillah, WA

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

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is December (4.7mph).

Average humidity in January
Zillah, WA

Average humidity in January - Zillah, WA
  • Average humidity in January: 82%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is July (38%).

Average rainfall in January
Zillah, WA

Average rainfall in January - Zillah, WA
  • Average rainfall in January: 1.02"

The wettest month (with the highest rainfall) is January (1.02").
The driest month (with the least rainfall) is July (0.16").

Average rainfall days in January
Zillah, WA

Average rainfall days in January - Zillah, WA
  • Average rainfall days in January: 10.2 days

The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is July (3.5 days).

Average snowfall in January
Zillah, WA

Average snowfall in January - Zillah, WA
  • Average snowfall in January: 2.01"

The month with the highest snowfall is February (2.4").
The months with the least snowfall are April, May, June, July, August and October (0").

Average snowfall days in January
Zillah, WA

Average snowfall days in January - Zillah, WA
  • Average snowfall days in January: 4.2 days

The month with the highest number of snowfall days is December (5 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).

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

Average daylight in January / Average sunshine in January - Zillah, 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: 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
Zillah, WA

Average sunshine days in January - Zillah, WA
  • Average sunshine days in January: 16.8 days

The month with the most sunshine days is July (25.8 days).
The month with the least sunshine days is February (14.6 days).

Average UV index in January
Zillah, WA

Average UV index in January - Zillah, 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).

Average cloud cover in January
Zillah, WA

Average cloud cover in January - Zillah, WA
  • Average cloud cover in January: 42

The month with the most cloud cover is January (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 9).

Average visibility in January
Zillah, WA

Average visibility in January - Zillah, 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).

Zillah, Washington, USA

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