Salmon weather in September 2025

Expect 22°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Salmon in September. Check more long-term weather averages for Salmon in September before you book your next holiday to Idaho in 2025/2026.

  • 22°C maximum daytime temperature in September in Salmon22
    22°C max day temperature
  • 9 hours of sunshine per day
  • 7 days with some rainfall in September in Salmon7
    7 days with some rainfall
  • 3°C minimum night-time temperature in September in Salmon3
    3°C min night temperature
  • 12 hours of daylight per day in September in Salmon12
    12 hours of daylight per day
  • No heat & humidity in September in Salmon0
    No heat & humidity
  • 22 mm monthly rainfall in September in Salmon22
    22 mm of monthly rainfall
  • UV (maximum) index 6 (High) in September in Salmon6
    6 (High) UV index

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The September weather guide for Idaho (Salmon) 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 / mm)  |  Imperial (°F / inches)

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How hot is it in Salmon in September?

Daytime temperatures usually reach 22°C in Salmon in September, falling to 3°C at night.

How sunny is it in Salmon in September?

There are normally 9 hours of bright sunshine each day in Salmon in September - that's 72% of daylight hours.

Does it rain in Salmon in September?

There are usually 7 days with some rain in Salmon in September and the average monthly rainfall is 22mm.

Salmon September sunrise & sunset times

Browse the sunrise and sunset times for Salmon in September 2025. Select a month to view Salmon sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:58 19:12
Monday, 15th September 2025 06:15 18:46
Tuesday, 30th September 2025 06:33 18:17

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