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
Sun River, Montana, registers an average high-temperature of a still subzero cold 31.3°F (-0.4°C) with the arrival of January, showing minor deviation from the preceding month. In January, in Sun River, the average low-temperature is a still subzero cold 18.7°F (-7.4°C).Humidity
January is the most humid month in Sun River, with an average relative humidity of 78%.Rainfall
The months with the least rainfall are January and July Rain falls for 4.8 days and accumulates 0.63" (16mm) of rain.Snowfall
Months with snowfall in Sun River are January through May, September through December. In January, it is snowing for 11.5 days. Throughout January, 4.41" (112mm) of snow is accumulated. Throughout the year, there are 69.4 snowfall days, and 35.35" (898mm) of snow is accumulated.Daylight
In January, the average length of the day in Sun River is 8h and 58min.On the first day of January, sunrise is at 8:14 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:54 am and sunset at 5:26 pm MST.
Sunshine
The months with the least sunshine in Sun River are January and December, with an average of 5.4h of sunshine.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index, 2 in January, converts into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Sun River in January?
What is the most humid month in Sun River?
What is the average humidity in January in Sun River?
What is the driest month in Sun River?
How many days does it rain in January in Sun River?
How many days does it snow in January in Sun River?
How many hours of daylight does Sun River have in January?
When are sunrise and sunset in January in Sun River?
What is the month with the least sunshine in Sun River?
How many hours of sunshine does Sun River have in January?
When is the lowest UV index in Sun River?
What is the UV index intensity in January in Sun River?
Average temperature in January
Sun River, MT
- Average high temperature in January: 31.3°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is December (29.5°F).
- Average low temperature in January: 18.7°F
The month with the highest average low temperature is August (56.7°F).
The coldest month (with the lowest average low temperature) is December (17.4°F).
Average pressure in January
Sun River, MT
- Average pressure in January: 30.14"Hg
The months with the highest atmospheric pressure are January and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in January
Sun River, MT
- Average wind speed in January: 10.7mph
The windiest months (with the highest average wind speed) are January and November (10.7mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in January
Sun River, MT
- Average humidity in January: 78%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is August (41%).
Average rainfall in January
Sun River, MT
- Average rainfall in January: 0.63"
The wettest month (with the highest rainfall) is June (2.05").
The driest months (with the least rainfall) are January and July (0.63").
Average rainfall days in January
Sun River, MT
- Average rainfall days in January: 4.8 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in January
Sun River, MT
- Average snowfall in January: 4.41"
The month with the highest snowfall is February (6.34").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
Sun River, MT
- Average snowfall days in January: 11.5 days
The month with the highest number of snowfall days is February (14.4 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in January /
Average sunshine in January
Sun River, MT
- Average daylight in January: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in January: 5h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in January
Sun River, MT
- Average sunshine days in January: 16.8 days
The month with the most sunshine days is September (18.8 days).
The month with the least sunshine days is April (10.3 days).
Average UV index in January
Sun River, MT
- 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, October, November and December (UV index 2).
Average cloud cover in January
Sun River, MT
- Average cloud cover in January: 42
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 14).
Average visibility in January
Sun River, MT
- 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).
Sun River, Montana, USA
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