St. Joseph, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Joseph, a village in Champaign County, Illinois.
Tonight
57°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy, with a low around 57. South wind 13 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for St. Joseph
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Showers And Thunderstorms | 13 to 17 mph S | 87% |
| Wednesday | 64°F | Chance Light Rain then Mostly Cloudy | 10 to 15 mph SSW | 29% |
| Wednesday Night | 45°F | Mostly Cloudy | 8 mph SW | 1% |
| Thursday | 62°F | Mostly Sunny | 7 to 13 mph WSW | 4% |
| Thursday Night | 43°F | Mostly Cloudy | 5 mph WNW | 8% |
| Friday | 56°F | Slight Chance Light Rain then Partly Sunny | 3 to 9 mph NNW | 16% |
| Friday Night | 36°F | Mostly Cloudy | 3 to 7 mph NNW | 7% |
| Saturday | 55°F | Mostly Sunny | 3 mph NW | 2% |
| Saturday Night | 33°F | Partly Cloudy | 2 mph W | 2% |
| Sunday | 60°F | Mostly Sunny | 2 to 8 mph W | 11% |
| Sunday Night | 34°F | Mostly Clear | 5 mph WNW | 8% |
| Monday | 63°F | Sunny | 2 to 9 mph WSW | 4% |
| Monday Night | 39°F | Mostly Clear | 6 mph WSW | 2% |
| Tuesday | 66°F | Sunny | 6 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for St. Joseph (40.115, -88.036). Updated through the day.
Growing snapshot for St. Joseph
Last spring frost
Apr 20
First fall frost
Oct 21
Growing season
182 days
Hardiness zone
6a
More local growing data for St. Joseph: nearby ZIP 61873 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Bondville
Broadlands
Champaign
Dewey
Fisher
Foosland
Gifford
Homer
Ivesdale
Lake of the Woods
Longview
Ludlow
Mahomet
Ogden
Penfield
Pesotum
Philo
Rantoul
Royal
Sadorus
Savoy
Seymour
Sidney
Thomasboro
Tolono
Urbana
Climate data from the nearest NOAA station, Ogden, Il (4.7 mi from St. Joseph). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.