Garden Prairie, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Garden Prairie, a community in Boone County, Illinois.
Today
76°F
Showers And Thunderstorms
Showers and thunderstorms before 1pm, then a chance of showers and thunderstorms between 1pm and 3pm, then showers and thunderstorms likely. Cloudy, with a high near 76. South southeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Garden Prairie
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Showers And Thunderstorms | 5 to 10 mph SSE | 96% |
| Tonight | 61°F | Showers And Thunderstorms | 0 to 10 mph E | 93% |
| Sunday | 69°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 10 to 15 mph NE | 55% |
| Sunday Night | 54°F | Slight Chance Rain Showers | 10 to 15 mph NE | 19% |
| Monday | 64°F | Chance Rain Showers | 10 to 15 mph ENE | 31% |
| Monday Night | 49°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 16% |
| Tuesday | 62°F | Mostly Cloudy | 10 to 15 mph NE | 14% |
| Tuesday Night | 48°F | Partly Cloudy | 5 to 10 mph NE | 11% |
| Wednesday | 65°F | Partly Sunny | 5 to 15 mph NE | 4% |
| Wednesday Night | 49°F | Partly Cloudy | 0 to 10 mph NE | 1% |
| Thursday | 67°F | Partly Sunny | 5 to 10 mph NE | 4% |
| Thursday Night | 50°F | Mostly Cloudy | 0 to 5 mph NE | 4% |
| Friday | 71°F | Partly Sunny | 0 to 10 mph NE | 3% |
| Friday Night | 50°F | Partly Cloudy | 0 to 5 mph ENE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Garden Prairie (42.254, -88.713). Updated through the day.
Growing snapshot for Garden Prairie
Last spring frost
Apr 28
First fall frost
Oct 12
Growing season
166 days
Hardiness zone
5b
More local growing data for Garden Prairie: nearby ZIP 61038 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Marengo, Il (6.7 mi from Garden Prairie). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.