Grand Island weather in August 2025

Expect 30°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Grand Island in August. Check more long-term weather averages for Grand Island in August before you book your next holiday to Nebraska in 2025/2026.

  • 30°C maximum daytime temperature in August in Grand Island30
    30°C max day temperature
  • 10 hours of sunshine per day
  • 8 days with some rainfall in August in Grand Island8
    8 days with some rainfall
  • 16°C minimum night-time temperature in August in Grand Island16
    16°C min night temperature
  • 14 hours of daylight per day in August in Grand Island14
    14 hours of daylight per day
  • Moderate heat & humidity in August in Grand IslandM
    Moderate heat & humidity
  • 74 mm monthly rainfall in August in Grand Island74
    74 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Grand Island8
    8 (Very High) UV index

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The August 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 / mm)  |  Imperial (°F / inches)

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How hot is it in Grand Island in August?

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

How sunny is it in Grand Island in August?

There are normally 10 hours of bright sunshine each day in Grand Island in August - that's 74% of daylight hours.

Does it rain in Grand Island in August?

There are usually 8 days with some rain in Grand Island in August and the average monthly rainfall is 74mm.

Grand Island August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:30 19:49
Saturday, 16th August 2025 05:45 19:30
Sunday, 31st August 2025 06:00 19:07

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