Garden Prairie, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Garden Prairie, a community in Boone County, Illinois.
Overnight
60°F
Mostly Clear
Mostly clear. Low around 60, with temperatures rising to around 63 overnight. South wind around 5 mph.
7-day forecast for Garden Prairie
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 60°F | Mostly Clear | 5 mph S | 0% |
| Tuesday | 84°F | Mostly Sunny | 5 to 10 mph SSW | 1% |
| Tuesday Night | 66°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 67% |
| Wednesday | 77°F | Showers And Thunderstorms Likely | 0 to 5 mph W | 74% |
| Wednesday Night | 60°F | Showers And Thunderstorms | 0 to 5 mph E | 76% |
| Thursday | 79°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 mph | 43% |
| Thursday Night | 58°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 15% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph SSE | 6% |
| Friday Night | 61°F | Mostly Clear | 0 to 5 mph SSW | 7% |
| Saturday | 83°F | Mostly Sunny | 0 to 10 mph SSW | 11% |
| Saturday Night | 67°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSW | 21% |
| Sunday | 85°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 21% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 43% |
| Monday | 84°F | Chance Rain Showers | 0 to 10 mph SSW | 42% |
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 Aug 4, 2026.