St Louis weather in January 2026

Expect daytime maximum temperatures of 37°F in St Louis, Missouri in January based on long-term weather averages. There are 5 hours of sunshine per day on average with typically 1.8 inches of rainfall in the month, which might fall as snow.

  • 37°F maximum daytime temperature in January in St Louis37
    37°F max day temperature
  • 5 hours of sunshine per day
  • 9 days with some rainfall in January in St Louis9
    9 days with some rainfall
  • 21°F minimum night-time temperature in January in St Louis21
    21°F min night temperature
  • 10 hours of daylight per day in January in St Louis10
    10 hours of daylight per day
  • No heat & humidity in January in St Louis0
    No heat & humidity
  • 1.8 inches monthly rainfall in January in St Louis1.8
    1.8 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in January in St Louis2
    2 (Low) UV index

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The January weather guide for Missouri (St Louis) 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 St Louis in January?

Daytime temperatures usually reach 37°F in St Louis in January, falling to 21°F at night.

How sunny is it in St Louis in January?

There are normally 5 hours of bright sunshine each day in St Louis in January - that's 53% of daylight hours.

Does it rain in St Louis in January?

There are usually 9 days with some rain in St Louis in January and the average monthly rainfall is 1.8 inches. Rain may fall as snow in this month.

St Louis January sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 07:19 16:50
Friday, 16th January 2026 07:17 17:05
Saturday, 31st January 2026 07:07 17:22

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