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Idaho weather in January 2025
Expect 36°F daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Idaho in January. Check more long-term weather averages for Idaho in January before you book your next holiday to Idaho in 2025/2026.
- 3636°F max day temperature
- 4 hours of sunshine per day
- 1212 days with some rainfall
- 2121°F min night temperature
- 99 hours of daylight per day
- 0No heat & humidity
- 1.51.5 inches of monthly rainfall
- 11 (Low) UV index
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Recommended for Idaho
The January weather guide for Idaho (Boise) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Top Idaho destinations
Below are average maximum temperatures at popular countries, regions and places in Idaho in January. Select a holiday destination to see more weather parameters.
All Idaho destinations
Metric (°C) | Imperial (°F)
More about the USA
How cold is it in Idaho in January?
Daytime temperatures usually reach 36°F in Boise, Idaho in January, falling to 21°F at night.
How sunny is it in Idaho in January?
There are normally 4 hours of bright sunshine each day in Boise, Idaho in January - that's 38% of daylight hours.
Does it rain in Idaho in January?
There are usually 12 days with some rain in Boise, Idaho in January and the average monthly rainfall is 1.5 inches. Rain may fall as snow in this month.
Idaho January sunrise & sunset times
Browse the sunrise and sunset times for Idaho in January 2025. Select a month to view Idaho sunrise and sunset times for the next 12 months. The Idaho sunrise and sunset times shown below are for Boise.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Wednesday, 1st January 2025 | 08:18 | 17:19 |
Thursday, 16th January 2025 | 08:14 | 17:36 |
Friday, 31st January 2025 | 08:02 | 17:55 |
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