Grand Island weather in September 2025

Expect 77°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Grand Island in September. Check more long-term weather averages for Grand Island in September before you book your next holiday to Nebraska in 2025/2026.

  • 77°F maximum daytime temperature in September in Grand Island77
    77°F max day temperature
  • 9 hours of sunshine per day
  • 8 days with some rainfall in September in Grand Island8
    8 days with some rainfall
  • 52°F minimum night-time temperature in September in Grand Island52
    52°F min night temperature
  • 12 hours of daylight per day in September in Grand Island12
    12 hours of daylight per day
  • No heat & humidity in September in Grand Island0
    No heat & humidity
  • 2.8 inches monthly rainfall in September in Grand Island2.8
    2.8 inches of monthly rainfall
  • UV (maximum) index 6 (High) in September in Grand Island6
    6 (High) UV index

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The September weather guide for Nebraska (Grand Island) 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 hot is it in Grand Island in September?

Daytime temperatures usually reach 77°F in Grand Island in September with no heat and humidity, falling to 52°F at night.

How sunny is it in Grand Island in September?

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

Does it rain in Grand Island in September?

There are usually 8 days with some rain in Grand Island in September and the average monthly rainfall is 2.8 inches.

Grand Island September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:01 19:05
Monday, 15th September 2025 06:14 18:42
Tuesday, 30th September 2025 06:29 18:16

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