Bloomington, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bloomington, a city in Mclean County, Illinois.
Tonight
55°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy. Low around 55, with temperatures rising to around 60 overnight. South wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Bloomington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Showers And Thunderstorms | 15 to 18 mph S | 96% |
| Wednesday | 61°F | Slight Chance Light Rain then Mostly Cloudy | 14 to 17 mph SW | 23% |
| Wednesday Night | 46°F | Mostly Cloudy | 13 mph SW | 5% |
| Thursday | 60°F | Partly Sunny | 10 to 16 mph WSW | 7% |
| Thursday Night | 44°F | Mostly Cloudy then Chance Light Rain | 6 to 9 mph NW | 25% |
| Friday | 55°F | Slight Chance Light Rain then Partly Sunny | 8 to 12 mph NNW | 18% |
| Friday Night | 37°F | Mostly Cloudy | 5 to 10 mph NNW | 7% |
| Saturday | 53°F | Mostly Sunny | 6 mph WNW | 2% |
| Saturday Night | 35°F | Partly Cloudy | 5 mph W | 3% |
| Sunday | 59°F | Sunny | 5 to 10 mph W | 13% |
| Sunday Night | 36°F | Mostly Clear | 5 to 8 mph W | 7% |
| Monday | 64°F | Sunny | 6 to 13 mph SW | 3% |
| Monday Night | 41°F | Mostly Clear | 6 to 10 mph WSW | 2% |
| Tuesday | 66°F | Sunny | 8 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Bloomington (40.476, -88.970). Updated through the day.
Growing snapshot for Bloomington
Last spring frost
Apr 21
First fall frost
Oct 20
Growing season
181 days
Hardiness zone
6a
More local growing data for Bloomington: nearby ZIP 61701 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Bloomington 5W, Il (5 mi from Bloomington). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.