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
The average high-temperature during January is a still wintry 35.6°F (2°C), almost matching the conditions of the preceding month. January nights are marked by an average temperature drop to a freezing cold 24.1°F (-4.4°C).Humidity
The most humid month is January, with an average relative humidity of 88%.Rainfall
In Grangeville, during January, the rain falls for 10.3 days and regularly aggregates up to 2.05" (52mm) of precipitation. In Grangeville, during the entire year, the rain falls for 146.2 days and collects up to 23.35" (593mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. In Grangeville, in January, snow falls for 15.2 days, with typically accumulated 12.48" (317mm) of snow. Throughout the year, in Grangeville, there are 80.3 snowfall days, and 60.47" (1536mm) of snow is accumulated.Daylight
In Grangeville, the average length of the day in January is 9h and 9min.On the first day of the month, sunrise is at 7:26 am and sunset at 4:09 pm. On the last day of January, sunrise is at 7:07 am and sunset at 4:47 pm PST.
Sunshine
January has the least sunshine of the year, with an average of 4.8h of sunshine.UV index
In Grangeville, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: During January, 2 as the daily maximum UV index converts into the following advice:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is January?
What is the most humid month?
What is the average humidity in January in Grangeville?
How many days does it rain in January?
How many days does it snow in January in Grangeville?
How many hours of daylight does Grangeville have in January?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
How high is the UV index in January?
Average temperature in January
Grangeville, ID
- Average high temperature in January: 35.6°F
The warmest month (with the highest average high temperature) is August (82.6°F).
The month with the lowest average high temperature is December (33.6°F).
- Average low temperature in January: 24.1°F
The month with the highest average low temperature is August (53.2°F).
The coldest month (with the lowest average low temperature) is December (21.7°F).
Average pressure in January
Grangeville, ID
- Average pressure in January: 30.21"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The months with the lowest atmospheric pressure are June and August (29.94"Hg).
Average wind speed in January
Grangeville, ID
- Average wind speed in January: 4.9mph
The windiest months (with the highest average wind speed) are January and November (4.9mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in January
Grangeville, ID
- Average humidity in January: 88%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (47%).
Average rainfall in January
Grangeville, ID
- Average rainfall in January: 2.05"
The wettest month (with the highest rainfall) is April (2.91").
The driest month (with the least rainfall) is July (0.59").
Average rainfall days in January
Grangeville, ID
- Average rainfall days in January: 10.3 days
The month with the highest number of rainy days is April (19.3 days).
The month with the least rainy days is August (6.8 days).
Average snowfall in January
Grangeville, ID
- Average snowfall in January: 12.48"
The month with the highest snowfall is February (12.95").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
Grangeville, ID
- Average snowfall days in January: 15.2 days
The month with the highest number of snowfall days is December (16.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Grangeville, ID
- 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 month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in January
Grangeville, ID
- Average sunshine days in January: 11.8 days
The month with the most sunshine days is August (22.2 days).
The month with the least sunshine days is March (7.5 days).
Average UV index in January
Grangeville, ID
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in January
Grangeville, ID
- Average cloud cover in January: 50
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in January
Grangeville, ID
- Average visibility in January: 4mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
Grangeville, Idaho, USA
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