Modesto, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Modesto, a village in Macoupin County, Illinois.
This Afternoon
72°F
Light Rain
Rain and a slight chance of thunderstorms. Cloudy. High near 72, with temperatures falling to around 67 in the afternoon. South wind around 21 mph, with gusts as high as 32 mph. Chance of precipitation is 100%.
7-day forecast for Modesto
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Light Rain | 21 mph S | 95% |
| Tonight | 51°F | Light Rain | 10 to 17 mph S | 93% |
| Wednesday | 60°F | Chance Rain Showers then Mostly Cloudy | 9 to 15 mph SW | 12% |
| Wednesday Night | 41°F | Partly Cloudy | 8 mph SW | 0% |
| Thursday | 62°F | Mostly Sunny | 7 to 12 mph W | 4% |
| Thursday Night | 40°F | Mostly Cloudy then Slight Chance T-storms | 6 mph NW | 21% |
| Friday | 57°F | Mostly Cloudy | 6 to 9 mph N | 9% |
| Friday Night | 35°F | Mostly Cloudy | 2 to 7 mph N | 2% |
| Saturday | 55°F | Mostly Sunny | 3 mph NW | 1% |
| Saturday Night | 33°F | Partly Cloudy | 2 mph W | 1% |
| Sunday | 61°F | Sunny | 2 to 7 mph W | 7% |
| Sunday Night | 33°F | Mostly Clear | 5 mph W | 4% |
| Monday | 65°F | Sunny | 3 to 8 mph SW | 2% |
| Monday Night | 38°F | Mostly Clear | 6 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Modesto (39.479, -89.980). Updated through the day.
Growing snapshot for Modesto
Last spring frost
Apr 7
First fall frost
Oct 29
Growing season
205 days
Hardiness zone
6b
More local growing data for Modesto: nearby ZIP 62667 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Virden, Il (12 mi from Modesto). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.