Lewiston weather in January 2026

Expect daytime maximum temperatures of 37°F in Lewiston, Idaho in January based on long-term weather averages. There are 3 hours of sunshine per day on average with 11 days with some rainfall and typically 1.6 inches of rainfall in the month, which might fall as snow.

  • 37°F maximum daytime temperature in January in Lewiston37
    37°F max day temperature
  • 3 hours of sunshine per day
  • 11 days with some rainfall in January in Lewiston11
    11 days with some rainfall
  • 27°F minimum night-time temperature in January in Lewiston27
    27°F min night temperature
  • 9 hours of daylight per day in January in Lewiston9
    9 hours of daylight per day
  • No heat & humidity in January in Lewiston0
    No heat & humidity
  • 1.6 inches monthly rainfall in January in Lewiston1.6
    1.6 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Lewiston1
    1 (Low) UV index

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The January weather guide for Idaho (Lewiston) 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.

Metric (°C)  |  Imperial (°F)

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How cold is it in Lewiston in January?

Daytime temperatures usually reach 37°F in Lewiston in January, falling to 27°F at night.

How sunny is it in Lewiston in January?

There are normally 3 hours of bright sunshine each day in Lewiston in January - that's 28% of daylight hours.

Does it rain in Lewiston in January?

There are usually 11 days with some rain in Lewiston in January and the average monthly rainfall is 1.6 inches. Rain may fall as snow in this month.

Lewiston January sunrise & sunset times

Browse the sunrise and sunset times for Lewiston in January 2026. Select a month to view Lewiston sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 07:32 16:12
Friday, 16th January 2026 07:26 16:30
Saturday, 31st January 2026 07:12 16:51

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