Altus weather in September 2025

Expect 30°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Altus in September. Check more long-term weather averages for Altus in September before you book your next holiday to Oklahoma in 2025/2026.

  • 30°C maximum daytime temperature in September in Altus30
    30°C max day temperature
  • 9 hours of sunshine per day
  • 7 days with some rainfall in September in Altus7
    7 days with some rainfall
  • 16°C minimum night-time temperature in September in Altus16
    16°C min night temperature
  • 12 hours of daylight per day in September in Altus12
    12 hours of daylight per day
  • Moderate heat & humidity in September in AltusM
    Moderate heat & humidity
  • 83 mm monthly rainfall in September in Altus83
    83 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Altus8
    8 (Very High) UV index

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The September weather guide for Oklahoma (Altus) 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 Altus in September?

Daytime temperatures usually reach 30°C in Altus in September with moderate heat and humidity, falling to 16°C at night.

How sunny is it in Altus in September?

There are normally 9 hours of bright sunshine each day in Altus in September - that's 71% of daylight hours.

Does it rain in Altus in September?

There are usually 7 days with some rain in Altus in September and the average monthly rainfall is 83mm.

Altus September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:11 19:03
Monday, 15th September 2025 06:21 18:44
Tuesday, 30th September 2025 06:32 18:22

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