Grand Island Weather Year-Round — Best Time to Visit
Grand Island, United States has mild weather year-round. The best time to visit is September (score: 89/100). Annual average high: 16.5°C, total rainfall: 687mm.
When is the best time to visit Grand Island?
89
September is the best month to visit Grand Island with a travel score of 89/100 (Excellent).
Expect highs of 25.5°C, 6 rain days, and 10.5 hours of daily sunshine.
View September weather details →Travel Score by Month
54
Jan
57
Feb
65
Mar
71
Apr
76
May
84
Jun
87
Jul
86
Aug
89
Sep
76
Oct
66
Nov
54
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Grand Island each month?
16.5°C
Avg High
6.1°C
Avg Low
687mm
Annual Rain
How much rain does Grand Island get?
Grand Island receives 687mm of rain annually. The wettest month is typically May with 123mm, while January is the driest.
What is the weather like each month in Grand Island?
January
54
2°C
Low: -8°C
3 rain days
Mixed
February
57
4°C
Low: -7°C
4 rain days
Mixed
March
65
11°C
Low: -1°C
6 rain days
Good
April
71
16°C
Low: 5°C
9 rain days
Good
May
76
22°C
Low: 11°C
12 rain days
Good
June
84
28°C
Low: 17°C
9 rain days
Excellent
July
87
30°C
Low: 20°C
8 rain days
Excellent
August
86
29°C
Low: 19°C
8 rain days
Excellent
September
Best time to visit89
26°C
Low: 15°C
6 rain days
Excellent
October
76
18°C
Low: 7°C
6 rain days
Good
November
66
10°C
Low: 0°C
4 rain days
Good
December
54
3°C
Low: -6°C
4 rain days
Mixed
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What cities are near Grand Island?
Data based on 1994–2024 averages · Last updated: 2024-12-31