Mazon, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mazon, a village in Grundy County, Illinois.
This Afternoon
73°F
Chance Rain
A chance of rain and a slight chance of thunderstorms. Mostly cloudy. High near 73, with temperatures falling to around 69 in the afternoon. South wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Mazon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Chance Rain | 15 to 20 mph S | 46% |
| Tonight | 59°F | Rain | 15 mph S | 85% |
| Wednesday | 63°F | Chance Rain then Mostly Cloudy | 15 mph SSW | 42% |
| Wednesday Night | 48°F | Mostly Cloudy | 10 to 15 mph SW | 9% |
| Thursday | 60°F | Mostly Cloudy then Slight Chance Rain | 10 to 15 mph WSW | 16% |
| Thursday Night | 43°F | Chance Rain | 5 mph WNW | 35% |
| Friday | 55°F | Slight Chance Rain | 5 to 10 mph NNW | 22% |
| Friday Night | 36°F | Partly Cloudy | 0 to 10 mph NNW | 4% |
| Saturday | 54°F | Mostly Sunny | 0 to 5 mph WNW | 5% |
| Saturday Night | 34°F | Partly Cloudy | 0 mph | 3% |
| Sunday | 59°F | Mostly Sunny | 0 to 10 mph W | 11% |
| Sunday Night | 34°F | Mostly Clear | 0 to 5 mph WNW | 8% |
| Monday | 64°F | Sunny | 5 to 10 mph WSW | 3% |
| Monday Night | 39°F | Mostly Clear | 5 mph WSW | 2% |
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 Nov 3, 2026.