Bloomington/Normal weather by month & the best time to visit
United States · regional city · hot-summer continental climate
The best time to visit Bloomington/Normal is September — its sunniest month (Sunshine Score 76/100), with August and July close behind. Bloomington/Normal averages about 2,243 hours of sunshine a year. Daytime highs around 25°C / 77°F and roughly 85 mm of rain in September.
When is the best time to visit Bloomington/Normal?
For sunshine, the best time to visit Bloomington/Normal is September, then August and July. The dullest month is January (0/100, 55 mm of rain). The full month-by-month picture is in the table below.
How sunny is Bloomington/Normal?
Bloomington/Normal gets a moderate 2,243 hours of sunshine a year. 76 Sunshine Score points separate September (76) from January (0), so the month you pick matters. It ranks #308 of 580 destinations in United States for annual sunshine, below the national median of 2,279 hours. The year's 1,001 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | 0° / 32°F | -9° / 16°F | 55 mm | 1 |
| February | 0 | 2° / 36°F | -7° / 19°F | 53 mm | 2 |
| March | 13 | 10° / 50°F | -2° / 28°F | 69 mm | 3 |
| April | 55 | 17° / 63°F | 5° / 41°F | 99 mm | 5 |
| May | 71 | 22° / 72°F | 11° / 52°F | 115 mm | 6 |
| June | 70 | 27° / 81°F | 16° / 61°F | 118 mm | 7 |
| July | 73 | 29° / 84°F | 18° / 64°F | 101 mm | 8 |
| August | 75 | 28° / 82°F | 17° / 63°F | 91 mm | 7 |
| September | 76 | 25° / 77°F | 13° / 55°F | 85 mm | 6 |
| October | 57 | 17° / 63°F | 6° / 43°F | 87 mm | 3 |
| November | 13 | 10° / 50°F | -1° / 30°F | 66 mm | 2 |
| December | 0 | 3° / 37°F | -6° / 21°F | 62 mm | 1 |
Nearest destinations
Head-to-head
How Bloomington/Normal compares month by month: Bloomington/Normal vs Chicago · Bloomington/Normal vs St Louis · Bloomington/Normal vs Peoria · Bloomington/Normal vs Moline · all comparisons
Bloomington/Normal: questions and answers
What kind of destination is Bloomington/Normal?
Bloomington/Normal is a regional city in United States with a hot-summer continental climate.
How many hours of sunshine does Bloomington/Normal get a year?
Bloomington/Normal gets about 2,243 hours of sunshine a year, at its best around September.
When is the best time to visit Bloomington/Normal?
The sunniest time to visit Bloomington/Normal is September, when the Sunshine Score peaks at 76/100 (with August and July close behind). Expect daytime highs around 25°C / 77°F.
What is the least sunny month in Bloomington/Normal?
January is the least sunny month in Bloomington/Normal, scoring 0/100 with about 55 mm of rain.
How strong is the sun in Bloomington/Normal?
The typical midday UV index in Bloomington/Normal peaks around 8 (very high) in July, easing to about 1 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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