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
Princeton's shift into January sets the average high-temperature at a still cold 35.4°F (1.9°C), a figure that deviates only slightly from December's 34°F (1.1°C). The mean low-temperature during January nights in Princeton is a subzero cold 25.5°F (-3.6°C).Humidity
With an average relative humidity of 87%, January is the most humid month in Princeton.Rainfall
In Princeton, during January, the rain falls for 10.9 days and regularly aggregates up to 2.52" (64mm) of precipitation. Throughout the year, in Princeton, there are 143.2 rainfall days, and 20.51" (521mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. January is the month with the most snowfall. Snow falls for 13.7 days and accumulates 12.56" (319mm) of snow.Daylight
In January, the average length of the day in Princeton is 9h and 2min.On the first day of January in Princeton, Idaho, sunrise is at 7:32 am and sunset at 4:08 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 4:48 pm PST.
Sunshine
January, February and December, with an average of 4.5h of sunshine, are months with the least sunshine.UV index
In Princeton, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily high UV index of 2 in January leads to these guidelines:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is January in Princeton?
What is the most humid month in Princeton?
What is the average humidity in January in Princeton?
How many days does it rain in January in Princeton?
What is the snowiest month in Princeton?
How many days does it snow in January in Princeton?
What is the average length of the day in January in Princeton?
When is the sunrise / sunset in January in Princeton?
What is the month with the least sunshine in Princeton?
How long on average sun shines in January in Princeton?
What is the UV index reading in January in Princeton?
Average temperature in January
Princeton, ID
- Average high temperature in January: 35.4°F
The warmest month (with the highest average high temperature) is August (83.7°F).
The month with the lowest average high temperature is December (34°F).
- Average low temperature in January: 25.5°F
The month with the highest average low temperature is August (58.1°F).
The coldest month (with the lowest average low temperature) is December (24.1°F).
Average pressure in January
Princeton, ID
- Average pressure in January: 30.2"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in January
Princeton, ID
- Average wind speed in January: 5.8mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest months (with the lowest average wind speed) are July, August and September (4.8mph).
Average humidity in January
Princeton, ID
- Average humidity in January: 87%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (40%).
Average rainfall in January
Princeton, ID
- Average rainfall in January: 2.52"
The wettest month (with the highest rainfall) is December (2.68").
The driest months (with the least rainfall) are July and August (0.47").
Average rainfall days in January
Princeton, ID
- Average rainfall days in January: 10.9 days
The month with the highest number of rainy days is April (18.1 days).
The months with the least rainy days are July and August (5.9 days).
Average snowfall in January
Princeton, ID
- Average snowfall in January: 12.56"
The month with the highest snowfall is January (12.56").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
Princeton, ID
- Average snowfall days in January: 13.7 days
The month with the highest number of snowfall days is December (14.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Princeton, ID
- Average daylight in January: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in January: 4h and 3min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 30min).
Average sunshine days in January
Princeton, ID
- Average sunshine days in January: 11.8 days
The month with the most sunshine days is July (23.3 days).
The month with the least sunshine days is February (9.2 days).
Average UV index in January
Princeton, 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
Princeton, ID
- Average cloud cover in January: 53
The month with the most cloud cover is February (Cloud cover 54).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in January
Princeton, ID
- Average visibility in January: 4mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (4mi).
Princeton, Idaho, USA
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