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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Recommended for Nebraska

  • Kids stay & eat for free at Marriot Bonvoy
  • Destinations include Europe, Middle East & Africa
  • Valid for up to 2 adults & 2 kids aged up to 12

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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