Mazon, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mazon, a village in Grundy County, Illinois.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. South southwest wind 5 to 10 mph.
7-day forecast for Mazon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 5 to 10 mph SSW | 2% |
| Tonight | 68°F | Partly Cloudy | 5 mph S | 7% |
| Wednesday | 82°F | Chance Showers And Thunderstorms | 5 mph SW | 51% |
| Wednesday Night | 67°F | Showers And Thunderstorms | 0 to 5 mph W | 90% |
| Thursday | 81°F | Chance Showers And Thunderstorms | 0 to 5 mph SSE | 76% |
| Thursday Night | 64°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 38% |
| Friday | 84°F | Mostly Sunny | 0 mph | 6% |
| Friday Night | 66°F | Mostly Clear | 0 mph | 9% |
| Saturday | 86°F | Mostly Sunny | 0 to 5 mph SSW | 11% |
| Saturday Night | 70°F | Mostly Clear | 5 mph SSW | 11% |
| Sunday | 88°F | Mostly Sunny | 5 to 10 mph SW | 10% |
| Sunday Night | 71°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 30% |
| Monday | 88°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 30% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 5 to 10 mph WSW | 38% |
Forecast source: National Weather Service (api.weather.gov) for Mazon (41.241, -88.423). Updated through the day.
Growing snapshot for Mazon
Last spring frost
Apr 20
First fall frost
Oct 23
Growing season
184 days
Hardiness zone
5b
More local growing data for Mazon: nearby ZIP 60444 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Braceville
Carbon Hill
Coal City
Diamond
East Brooklyn
Gardner
Godley
Kinsman
Morris
South Wilmington
Verona
Climate data from the nearest NOAA station, Morris 1 Nw, Il (9 mi from Mazon). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.