Grand Ridge, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grand Ridge, a village in Lasalle County, Illinois.
This Afternoon
76°F
Slight Chance Rain Showers
A slight chance of rain showers. Partly sunny, with a high near 76. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Grand Ridge
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Slight Chance Rain Showers | 10 mph E | 22% |
| Tonight | 66°F | Mostly Cloudy then Chance Showers And Thunderstorms | 10 mph ESE | 25% |
| Saturday | 84°F | Showers And Thunderstorms Likely | 5 to 10 mph SSE | 58% |
| Saturday Night | 67°F | Showers And Thunderstorms Likely | 5 mph W | 79% |
| Sunday | 72°F | Showers And Thunderstorms | 5 to 15 mph NE | 79% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 72% |
| Monday | 66°F | Showers And Thunderstorms Likely | 15 mph ENE | 63% |
| Monday Night | 54°F | Chance Rain Showers | 10 to 15 mph NE | 35% |
| Tuesday | 65°F | Chance Rain Showers | 10 mph NE | 25% |
| Tuesday Night | 52°F | Mostly Cloudy | 5 to 10 mph NNE | 8% |
| Wednesday | 68°F | Partly Sunny | 5 to 10 mph NNE | 5% |
| Wednesday Night | 53°F | Partly Cloudy | 0 to 10 mph NNE | 5% |
| Thursday | 70°F | Mostly Sunny | 5 mph N | 2% |
| Thursday Night | 55°F | Partly Cloudy | 0 to 5 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Grand Ridge (41.236, -88.831). Updated through the day.
Growing snapshot for Grand Ridge
Last spring frost
Apr 27
First fall frost
Oct 17
Growing season
171 days
Hardiness zone
5b
More local growing data for Grand Ridge: nearby ZIP 61325 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Cedar Point
Dana
Dayton
Earlville
Harding
Kangley
LaSalle
Leland
Leonore
Lostant
Marseilles
Mendota
Millington
Naplate
Newark
North Utica
Oglesby
Ottawa
Peru
Ransom
Rutland
Seneca
Serena
Sheridan
Streator
Tonica
Triumph
Troy Grove
Wedron
Wenona
Climate data from the nearest NOAA station, Marseilles Lock, Il (7.1 mi from Grand Ridge). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.