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 transition into January notes an average high-temperature of a still freezing cold 29.1°F (-1.6°C), revealing a mild distinction from the 28.8°F (-1.8°C) in December. January nights are marked by an average temperature drop to a frigid cold 13.5°F (-10.3°C).Humidity
With an average relative humidity of 90%, January is the most humid month.Rainfall
In Preston, in January, during 8.9 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Throughout the year, there are 127.4 rainfall days, and 18.27" (464mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. January is the month with the most snowfall in Preston. Snow falls for 17.6 days and accumulates 16.73" (425mm) of snow.Daylight
In January, the average length of the day is 9h and 32min.On the first day of the month, sunrise is at 7:55 am and sunset at 5:06 pm. On the last day of January, sunrise is at 7:41 am and sunset at 5:40 pm MST.
Sunshine
January has the least sunshine of the year, with an average of 4.8h of sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 1 in January converts into the following recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. To protect against the Sun's most potent rays, avoid direct exposure around midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in January?
What is the most humid month?
What is the average humidity in January?
How much does it rain in Preston in January?
What is the snowiest month?
How many days does it snow in January?
What is the average length of the day in January in Preston?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Preston have in January?
When is the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Preston, ID
- Average high temperature in January: 29.1°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (28.8°F).
- Average low temperature in January: 13.5°F
The month with the highest average low temperature is July (53.8°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in January
Preston, ID
- Average pressure in January: 30.3"Hg
The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in January
Preston, ID
- Average wind speed in January: 4.2mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).
Average humidity in January
Preston, ID
- Average humidity in January: 90%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (38%).
Average rainfall in January
Preston, ID
- Average rainfall in January: 2.2"
The wettest month (with the highest rainfall) is February (2.24").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in January
Preston, ID
- Average rainfall days in January: 8.9 days
The month with the highest number of rainy days is April (16.6 days).
The month with the least rainy days is July (5.5 days).
Average snowfall in January
Preston, ID
- Average snowfall in January: 16.73"
The month with the highest snowfall is January (16.73").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
Preston, ID
- Average snowfall days in January: 17.6 days
The months with the highest number of snowfall days are January and February (17.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Preston, ID
- Average daylight in January: 9h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January: 4h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in January
Preston, ID
- Average sunshine days in January: 12.6 days
The month with the most sunshine days is July (21.8 days).
The month with the least sunshine days is February (8.3 days).
Average UV index in January
Preston, ID
- Average UV index in January: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Preston, ID
- Average cloud cover in January: 48
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in January
Preston, ID
- Average visibility in January: 4mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
Preston, Idaho, USA
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