Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
With the onset of January, the average high-temperature registers at a still cold 36.5°F (2.5°C), subtly different from December's 36.1°F (2.3°C). Sunnyside experiences a mean temperature of 26.6°F (-3°C) during January nights.Humidity
With an average relative humidity of 83%, January is the most humid month in Sunnyside.Rainfall
In January, the rain falls for 10.8 days. Throughout January, 1.06" (27mm) of precipitation is accumulated. Throughout the year, in Sunnyside, Washington, there are 104.5 rainfall days, and 8.23" (209mm) of precipitation is accumulated.Snowfall
Months with snowfall in Sunnyside, Washington, are January through March, September, November and December. In January, in Sunnyside, Washington, it is snowing for 4.6 days. Throughout January, 2.01" (51mm) of snow is accumulated. In Sunnyside, during the entire year, snow falls for 15.6 days and aggregates up to 7.36" (187mm) of snow.Daylight
The average length of the day in January is 9h and 6min.On the first day of January in Sunnyside, sunrise is at 7:43 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:02 pm PST.
Sunshine
With an average of 4.9h of sunshine, January has the least sunshine of the year.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Sunnyside. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: During January, 2 as the daily maximum UV index converts into the following advice:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Enhance your sun protection with tightly woven, yet airy clothing. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Frequently asked questions
How cold is it in Sunnyside in January?
What is the most humid month in Sunnyside?
What is the average humidity in January in Sunnyside?
How many days does it rain in January in Sunnyside?
How many days does it snow in January in Sunnyside?
What is the average length of the day in January in Sunnyside?
When is the sunrise / sunset in January in Sunnyside?
What is the month with the least sunshine in Sunnyside?
How many hours of sunshine does Sunnyside have in January?
When is the lowest UV index in Sunnyside?
What is the UV index reading in January in Sunnyside?
Average temperature in January
Sunnyside, WA
- Average high temperature in January: 36.5°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is December (36.1°F).
- Average low temperature in January: 26.6°F
The month with the highest average low temperature is August (61.5°F).
The coldest month (with the lowest average low temperature) is December (25.3°F).
Average pressure in January
Sunnyside, WA
- Average pressure in January: 30.17"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in January
Sunnyside, WA
- Average wind speed in January: 5.2mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is December (5mph).
Average humidity in January
Sunnyside, 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 (38%).
Average rainfall in January
Sunnyside, WA
- Average rainfall in January: 1.06"
The wettest month (with the highest rainfall) is May (1.1").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in January
Sunnyside, WA
- Average rainfall days in January: 10.8 days
The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is July (4.1 days).
Average snowfall in January
Sunnyside, WA
- Average snowfall in January: 2.01"
The month with the highest snowfall is December (2.24").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in January
Sunnyside, WA
- Average snowfall days in January: 4.6 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
Sunnyside, 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: 4h and 5min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in January
Sunnyside, WA
- Average sunshine days in January: 15.9 days
The month with the most sunshine days is July (26.2 days).
The month with the least sunshine days is March (15.4 days).
Average UV index in January
Sunnyside, WA
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Sunnyside, WA
- Average cloud cover in January: 50
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in January
Sunnyside, WA
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Sunnyside, Washington, USA
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