Click on a day for an hourly weather forecast
The temperatures in Grand Island in May are comfortable with low of 11°C and and high up to 22°C.
You can expect rain for roughly half of the month of May in Grand Island. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Grand Island in May 2025.
If you’re planning to visit Grand Island in the near future, we highly recommend that you review the 14 day weather forecast for Grand Island before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 2° / -7° | 4 | 25 | 2 | 20 mm | Awful | Grand Island in January |
| February | 3° / -7° | 4 | 22 | 2 | 19 mm | Awful | Grand Island in February |
| March | 11° / 0° | 4 | 25 | 2 | 52 mm | Bad | Grand Island in March |
| April | 16° / 5° | 6 | 23 | 1 | 86 mm | Good | Grand Island in April |
| May | 22° / 11° | 8 | 23 | 0 | 158 mm | Ok | Grand Island in May |
| June | 28° / 17° | 7 | 23 | 0 | 140 mm | Good | Grand Island in June |
| July | 31° / 19° | 6 | 25 | 0 | 77 mm | Good | Grand Island in July |
| August | 30° / 18° | 6 | 25 | 0 | 90 mm | Good | Grand Island in August |
| September | 26° / 14° | 5 | 25 | 0 | 66 mm | Perfect | Grand Island in September |
| October | 18° / 7° | 5 | 25 | 1 | 66 mm | Good | Grand Island in October |
| November | 11° / 1° | 3 | 26 | 1 | 25 mm | Ok | Grand Island in November |
| December | 3° / -5° | 4 | 24 | 2 | 36 mm | Awful | Grand Island in December |