January weather forecastSunriver, OR
January
Weather in January
January, the same as December, is an icy winter month in Sunriver, Oregon, with an average temperature fluctuating between 38.7°F (3.7°C) and 26.8°F (-2.9°C).Temperature
With January's arrival, Sunriver notes an average high-temperature of a still cold 38.7°F (3.7°C), closely following the trend of the preceding month. During January, Sunriver experiences an average low-temperature of 26.8°F (-2.9°C) at night.Humidity
The average relative humidity in January is 80%.Rainfall
In Sunriver, Oregon, in January, during 7.9 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. Throughout the year, there are 107.1 rainfall days, and 12.17" (309mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. In Sunriver, in January, during 6.8 snowfall days, 4.25" (108mm) of snow is typically accumulated. In Sunriver, during the entire year, snow falls for 44.9 days and aggregates up to 24.57" (624mm) of snow.Daylight
In January, the average length of the day is 9h and 22min.On the first day of the month, sunrise is at 7:39 am and sunset at 4:38 pm. On the last day of January, sunrise is at 7:23 am and sunset at 5:14 pm PST.
Sunshine
The average sunshine in January in Sunriver is 5.6h.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 estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: A daily high UV index of 2 in January leads to these guidelines:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Sunriver, OR
- Average high temperature in January: 38.7°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is December (35.8°F).
- Average low temperature in January: 26.8°F
The month with the highest average low temperature is August (52.2°F).
The coldest month (with the lowest average low temperature) is December (24.6°F).
Average pressure in January
Sunriver, OR
- 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 (29.97"Hg).
Average wind speed in January
Sunriver, OR
- Average wind speed in January: 7.1mph
The windiest month (with the highest average wind speed) is January (7.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in January
Sunriver, OR
- Average humidity in January: 80%
The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is July (48%).
Average rainfall in January
Sunriver, OR
- Average rainfall in January: 1.3"
The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in January
Sunriver, OR
- Average rainfall days in January: 7.9 days
The month with the highest number of rainy days is May (14 days).
The month with the least rainy days is July (4.8 days).
Average snowfall in January
Sunriver, OR
- Average snowfall in January: 4.25"
The month with the highest snowfall is February (6.65").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
Sunriver, OR
- Average snowfall days in January: 6.8 days
The month with the highest number of snowfall days is March (9.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Sunriver, OR
- Average daylight in January: 9h and 24min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January: 5h and 36min
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 24min).
Average sunshine days in January
Sunriver, OR
- Average sunshine days in January: 18.5 days
The month with the most sunshine days is July (23.6 days).
The month with the least sunshine days is April (12.8 days).
Average UV index in January
Sunriver, 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
Sunriver, OR
- Average cloud cover in January: 45
The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in January
Sunriver, 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).
