Weather in Grand Island, Nebraska for September 2026
Until now, September 2026 in Grand Island has been nearly identical to the historical average, with a temperature of 28.3 °F (showing only a slight deviation of 0 °F).
The forecast for the next days in Grand Island predicts a temperature of 20.3 °F, which is cooler than the historical average.
In general, the average temperature in Grand Island at the beginning of September is 29.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22.4 °F by the end of September.
Grand Island experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 179.7 mm.
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Grand Island Weather September
Temperatures trend during September in Grand Island
September weather in Grand Island day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 28° /18° | 0 mm | 5 | |
| Sept. 2 | Sunny | 31° /16° | 0 mm | 7 | |
| Sept. 3 | Sunny | 30° /16° | 0 mm | 7 | |
| Sept. 4 | Sunny | 32° /16° | 0.2 mm | 7 | |
| Sept. 5 |  Partly cloudy | 29° /18° | 0 mm | 7 | |
| Sept. 6 | Partly cloudy | 28° /14° | 0.1 mm | 5 | |
| Sept. 7 | Sunny | 30° /13° | 0 mm | 7 | |
| Sept. 8 | Sunny | 29° /17° | 4.5 mm | 5 | |
| Sept. 9 | Sunny | 31° /18° | 0.2 mm | 7 | |
| Sept. 10 |  Patchy rain possible | 33° /16° | 0 mm | 7 | |
| Sept. 11 | Sunny | 32° /17° | 0.1 mm | 7 | |
| Sept. 12 | Sunny | 31° /16° | 0.2 mm | 7 | |
| Sept. 13 | Partly cloudy | 28° /17° | 0.2 mm | 6 | |
| Sept. 14 | Patchy rain possible | 30° /16° | 6.9 mm | 5 | |
| Sept. 15 |  Patchy light rain with thunder | 27° /15° | 10.6 mm | 5 | |
| Sept. 16 | Patchy rain possible | 28° /16° | 0.6 mm | 5 | |
| Sept. 17 |  Moderate or heavy rain shower | 26° /17° | 18.3 mm | 5 | |
| Sept. 18 | Light rain shower | 29° /19° | 12.3 mm | 6 | |
| Sept. 19 |  Mist | 27° /15° | 2.9 mm | 5 | |
| Sept. 20 |  Cloudy | 24° /14° | 5.7 mm | 4 | |
| Sept. 21 |  Overcast | 25° /14° | 0.5 mm | 4 | |
| Sept. 22 |  Heavy rain at times | 21° /13° | 2 mm | 4 | |
| Sept. 23 | Sunny | 22° /11° | 76.8 mm | 4 | |
| Sept. 24 | Overcast | 22° /12° | 15.3 mm | 4 | |
| Sept. 25 | Light rain shower | 20° /13° | 26.7 mm | 2 | |
| Sept. 26 | Light rain shower | 26° /14° | 19.1 mm | 3.5 | |
| Sept. 27 | Sunny | 23° /16° | 0 mm | 5.6 | |
| Sept. 28 | Overcast | 27° /17° | 1.7 mm | 5.3 | |
| Sept. 29 | Light rain shower | 22° /16° | 12.5 mm | 3.1 | |
| Sept. 30 | Overcast | 17° /14° | 11.8 mm | 4 | |
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Grand Island in September - FAQ
What are the expected maximum and minimum temperatures in Grand Island during September?
How much rainfall should be expected in Grand Island during September?
What are the typical wind conditions in Grand Island during September?
September rainfall patterns in Grand Island
UV exposure in Grand Island during September
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Where is Grand Island?Get accurate weather forecasts for Grand Island, located at latitude 40.925 and longitude -98.342. Stay updated with localized weather information tailored for Grand Island.