Grand Island weather in September 2025

The temperatures in Grand Island in September are comfortable with low of 14°C and and high up to 26°C.

You can expect about 3 to 8 days of rain in Grand Island during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

Our weather forecast can give you a great sense of what weather to expect in Grand Island in September 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.

Temperatures

26° / 14°

Rainy Days

Snowy Days

Dry Days

Rainfall

Sun Hours

8.6

Hrs

Sun	Mon	Tue	Wed	Thu	Fri	Sat
	1 34° /18°	2 35° /16°	3 35° /16°	4 35° /15°	5 32° /17°	6 33° /13°
7 34° /14°	8 36° /16°	9 33° /18°	10 25° /14°	11 30° /13°	12 31° /12°	13 33° /14°
14 32° /16°	15 29° /17°	16 31° /16°	17 31° /14°	18 35° /16°	19 35° /17°	20 34° /17°
21 27° /15°	22 19° /13°	23 25° /8°	24 27° /11°	25 28° /11°	26 28° /11°	27 28° /11°
28 30° /11°	29 31° /14°	30 33° /14°

Explore the weather in Grand Island in other months

Grand Island annual weather

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

Temperatures in Grand Island in September

Rain in Grand Island in September

Weather in Grand Island in September - FAQ

What is the average temperature in Grand Island in September?

The average temperature in Grand Island in September is 14/26° C.

What is the chance of rain in Grand Island in September?

On average, there are 5 rainy days in Grand Island during September.

Weather wise, is September a good time to visit Grand Island?

The weather in Grand Island in September is perfect.

Can it snow in Grand Island in September?

On average, there are 0 snowy days in Grand Island in September.

More about the weather in Grand Island