Grand Island weather by month & the best time to visit
United States · small town · hot-summer continental climate
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The best time to visit Grand Island is September — its sunniest month (Sunshine Score 83/100), with July and August close behind. Grand Island averages about 2,761 hours of sunshine a year. Daytime highs around 26°C / 79°F and roughly 66 mm of rain in September.
When is the best time to visit Grand Island?
For sunshine, the best time to visit Grand Island is September, then July and August. The dullest month is January (0/100, 15 mm of rain). The full month-by-month picture is in the table below.
How sunny is Grand Island?
Grand Island gets a lot of sun: around 2,761 hours a year. 83 Sunshine Score points separate September (83) from January (0), so the month you pick matters. It ranks #124 of 580 destinations in United States for annual sunshine, above the national median of 2,279 hours. Rain has a clear season: the wettest stretch, around June, carries about 43% of the annual 715 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | 1° / 34°F | -9° / 16°F | 15 mm | 2 |
| February | 0 | 3° / 37°F | -8° / 18°F | 18 mm | 3 |
| March | 22 | 11° / 52°F | -2° / 28°F | 35 mm | 4 |
| April | 68 | 18° / 64°F | 4° / 39°F | 72 mm | 6 |
| May | 73 | 23° / 73°F | 10° / 50°F | 121 mm | 7 |
| June | 75 | 29° / 84°F | 17° / 63°F | 111 mm | 9 |
| July | 81 | 32° / 90°F | 19° / 66°F | 78 mm | 9 |
| August | 79 | 30° / 86°F | 18° / 64°F | 91 mm | 8 |
| September | 83 | 26° / 79°F | 13° / 55°F | 66 mm | 6 |
| October | 63 | 17° / 63°F | 4° / 39°F | 60 mm | 4 |
| November | 15 | 10° / 50°F | -2° / 28°F | 24 mm | 2 |
| December | 0 | 2° / 36°F | -7° / 19°F | 24 mm | 1 |
Nearest destinations
Grand Island: questions and answers
What kind of destination is Grand Island?
Grand Island is a small town in United States at 560 m elevation with a hot-summer continental climate.
How many hours of sunshine does Grand Island get a year?
Grand Island gets about 2,761 hours of sunshine a year, at its best around September.
When is the best time to visit Grand Island?
The sunniest time to visit Grand Island is September, when the Sunshine Score peaks at 83/100 (with July and August close behind). Expect daytime highs around 26°C / 79°F.
What is the least sunny month in Grand Island?
January is the least sunny month in Grand Island, scoring 0/100 with about 15 mm of rain.
How strong is the sun in Grand Island?
The typical midday UV index in Grand Island peaks around 9 (very high) in June, easing to about 1 (low) in December. Month-by-month midday UV values are in the UV column of the table on this page.
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