St. Joseph, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Joseph, a village in Champaign County, Illinois.
Today
84°F
Patchy Fog then Sunny
Patchy fog before 9am. Sunny, with a high near 84. South wind around 5 mph.
7-day forecast for St. Joseph
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Patchy Fog then Sunny | 5 mph S | 0% |
| Tonight | 65°F | Mostly Clear | 3 mph SSE | 0% |
| Wednesday | 85°F | Mostly Sunny | 2 to 6 mph SSW | 4% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms | 5 mph S | 65% |
| Thursday | 82°F | Showers And Thunderstorms | 2 to 6 mph SSW | 76% |
| Thursday Night | 66°F | Chance Showers And Thunderstorms | 3 mph S | 46% |
| Friday | 83°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 2 mph SSW | 22% |
| Friday Night | 66°F | Slight Chance Showers And Thunderstorms | 2 mph SSW | 22% |
| Saturday | 85°F | Slight Chance Rain Showers then Mostly Sunny | 5 mph SSW | 17% |
| Saturday Night | 69°F | Mostly Clear | 2 to 7 mph SSW | 14% |
| Sunday | 87°F | Sunny | 7 to 12 mph SSW | 9% |
| Sunday Night | 71°F | Partly Cloudy | 9 mph SSW | 11% |
| Monday | 88°F | Slight Chance Showers And Thunderstorms | 10 mph SSW | 19% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms | 9 mph SW | 29% |
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 Aug 4, 2026.