Weather in Grand Island in September
Grand Island, United States averages a high of 25.5°C (77.9°F) and low of 14.9°C (58.8°F) in September, with 6 rain days and 10.5 hours of daily sunshine. Travel score: 89.2/100 (Excellent). The best time to visit Grand Island is September.
High
26°C78°F
Low
15°C59°F
🌧️
6
rain days
☀️
10.5
hrs/day sunshine
💧
61%
humidity
89— Excellent
September in Grand Island is warm and mostly dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in Grand Island?
How much does it rain in Grand Island in September?
Grand Island receives an average of 55.6mm of rainfall across 6 rainy days in September. The annual total is 687.4mm.
What should I pack for Grand Island in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 26°C
🧴
Sunscreen SPF 30+
11 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to United States in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31