January weather forecastPrineville, OR
January
Weather in January
January, like December, in Prineville, Oregon, is a wintry winter month, with an average temperature fluctuating between 27°F (-2.8°C) and 39°F (3.9°C).Temperature
The arrival of January brings an average high-temperature of a still wintry 39°F (3.9°C), closely following the temperature pattern of December. During January, the average low-temperature is a subzero cold 27°F (-2.8°C).Humidity
The average relative humidity in January is 79%.Rainfall
In Prineville, in January, during 12.7 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. In Prineville, during the entire year, the rain falls for 138.8 days and collects up to 14.69" (373mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. In Prineville, during January, snow falls for 8.8 days and regularly aggregates up to 4.17" (106mm) of snow. In Prineville, during the entire year, snow falls for 53.7 days and aggregates up to 25" (635mm) of snow.Daylight
In January, the average length of the day is 9h and 19min.On the first day of January, sunrise is at 7:38 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:10 pm PST.
Sunshine
The average sunshine in January is 5.5h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A typical high UV index of 2 in January suggests the following recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Prineville, OR
- Average high temperature in January: 39°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in January: 27°F
The month with the highest average low temperature is August (52.9°F).
The coldest month (with the lowest average low temperature) is December (25°F).
Average pressure in January
Prineville, OR
- Average pressure in January: 30.19"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).
Average wind speed in January
Prineville, OR
- Average wind speed in January: 7mph
The windiest months (with the highest average wind speed) are March and April (7.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in January
Prineville, OR
- Average humidity in January: 79%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are July and August (45%).
Average rainfall in January
Prineville, OR
- Average rainfall in January: 1.61"
The wettest month (with the highest rainfall) is December (1.89").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in January
Prineville, OR
- Average rainfall days in January: 12.7 days
The month with the highest number of rainy days is March (17.5 days).
The month with the least rainy days is July (4.2 days).
Average snowfall in January
Prineville, OR
- Average snowfall in January: 4.17"
The month with the highest snowfall is February (6.54").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
Prineville, OR
- Average snowfall days in January: 8.8 days
The month with the highest number of snowfall days is December (13.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Prineville, OR
- Average daylight in January: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January: 5h and 30min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in January
Prineville, OR
- Average sunshine days in January: 13.3 days
The month with the most sunshine days is July (24.8 days).
The month with the least sunshine days is March (8.8 days).
Average UV index in January
Prineville, OR
- 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, March, November and December (UV index 2).
Average cloud cover in January
Prineville, OR
- Average cloud cover in January: 45
The month with the most cloud cover is December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in January
Prineville, OR
- 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).
