Mazon, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mazon, a village in Grundy County, Illinois.
Tonight
65°F
Mostly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 65. East southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Mazon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 65°F | Mostly Cloudy then Chance Showers And Thunderstorms | 10 mph ESE | 28% |
| Saturday | 84°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 67% |
| Saturday Night | 68°F | Showers And Thunderstorms Likely | 5 mph SW | 79% |
| Sunday | 72°F | Showers And Thunderstorms | 5 to 15 mph NNE | 79% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 71% |
| Monday | 68°F | Showers And Thunderstorms Likely | 10 to 15 mph ENE | 62% |
| Monday Night | 54°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Tuesday | 66°F | Slight Chance Rain Showers | 10 mph NE | 24% |
| Tuesday Night | 53°F | Mostly Cloudy | 5 to 10 mph NNE | 12% |
| Wednesday | 69°F | Partly Sunny | 5 to 10 mph NNE | 6% |
| Wednesday Night | 54°F | Partly Cloudy | 0 to 5 mph NNE | 5% |
| Thursday | 71°F | Partly Sunny | 0 to 5 mph NNE | 3% |
| Thursday Night | 54°F | Partly Cloudy | 0 to 5 mph NNE | 3% |
| Friday | 73°F | Mostly Sunny | 0 to 5 mph NNE | 3% |
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 Sep 19, 2026.