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
Prosser marks the arrival of January with an average high-temperature of a still icy 37.9°F (3.3°C), hardly different from December's 37.2°F (2.9°C). Throughout January, the temperature in Prosser tends to fall to a consistent average low of 27.9°F (-2.3°C).Humidity
The most humid month in Prosser is January, with an average relative humidity of 81%.Rainfall
The months with the most rainfall are January and December, with an average 0.94" (24mm) of precipitation.Snowfall
January through March, September, November and December are months with snowfall in Prosser. In Prosser, in January, during 3.1 snowfall days, 1.26" (32mm) of snow is typically accumulated. In Prosser, during the entire year, snow falls for 13.5 days and aggregates up to 5.87" (149mm) of snow.Daylight
In January, the average length of the day in Prosser is 9h and 7min.On the first day of the month, sunrise is at 7:41 am and sunset at 4:23 pm. On the last day of January, in Prosser, sunrise is at 7:23 am and sunset at 5:01 pm PST.
Sunshine
With an average of 5.2h of sunshine, January has the least sunshine of the year.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 vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In January, a daily maximum UV index of 2 leads to the following instructions:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in Prosser in January?
What is the most humid month in Prosser?
What is the average humidity in January in Prosser?
What is the wettest month in Prosser?
How much does it rain in Prosser in January?
How much does it snow in Prosser in January?
What is the average length of the day in January in Prosser?
When is the sunrise / sunset in January in Prosser?
What is the month with the least sunshine in Prosser?
How long on average sun shines in January in Prosser?
When is the lowest UV index in Prosser?
How high is the UV index in January in Prosser?
Average temperature in January
Prosser, WA
- Average high temperature in January: 37.9°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (37.2°F).
- Average low temperature in January: 27.9°F
The month with the highest average low temperature is August (63.1°F).
The coldest month (with the lowest average low temperature) is December (27°F).
Average pressure in January
Prosser, 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).
Average wind speed in January
Prosser, WA
- Average wind speed in January: 5.9mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is December (5.6mph).
Average humidity in January
Prosser, WA
- Average humidity in January: 81%
The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (37%).
Average rainfall in January
Prosser, WA
- Average rainfall in January: 0.94"
The wettest months (with the highest rainfall) are January and December (0.94").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in January
Prosser, WA
- Average rainfall days in January: 10.4 days
The month with the highest number of rainy days is March (11.8 days).
The month with the least rainy days is July (3.6 days).
Average snowfall in January
Prosser, WA
- Average snowfall in January: 1.26"
The month with the highest snowfall is February (2.01").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in January
Prosser, WA
- Average snowfall days in January: 3.1 days
The month with the highest number of snowfall days is December (4.6 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
Prosser, 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 1min
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: 5h and 12min).
Average sunshine days in January
Prosser, WA
- Average sunshine days in January: 17.7 days
The month with the most sunshine days is July (25.8 days).
The month with the least sunshine days is February (15.5 days).
Average UV index in January
Prosser, 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
Prosser, WA
- Average cloud cover in January: 46
The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in January
Prosser, 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).
Prosser, Washington, USA
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