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
62°F
Patchy Drizzle
Patchy drizzle and isolated rain showers. Mostly cloudy. High near 62, with temperatures falling to around 54 in the afternoon. Southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Garden Prairie
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 62°F | Patchy Drizzle | 15 mph SW | 23% |
| Tonight | 46°F | Patchy Drizzle | 15 mph SW | 24% |
| Thursday | 55°F | Chance Rain Showers | 10 to 15 mph WSW | 35% |
| Thursday Night | 38°F | Chance Rain Showers then Mostly Cloudy | 10 mph NW | 38% |
| Friday | 48°F | Partly Sunny | 10 to 15 mph N | 8% |
| Friday Night | 30°F | Partly Cloudy | 0 to 10 mph NNW | 0% |
| Saturday | 51°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 31°F | Mostly Clear | 0 mph | 0% |
| Sunday | 56°F | Sunny | 0 to 10 mph W | 6% |
| Sunday Night | 33°F | Mostly Clear | 0 to 5 mph W | 0% |
| Monday | 60°F | Sunny | 0 to 10 mph WSW | 0% |
| Monday Night | 38°F | Partly Cloudy | 0 to 5 mph WSW | 1% |
| Tuesday | 61°F | Sunny | 0 to 5 mph WNW | 0% |
| Tuesday Night | 37°F | Partly Cloudy | 0 mph | 0% |
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 Nov 4, 2026.