Mazon, IL Weather & Growing Conditions
Today
64°F
Slight Chance Drizzle then Slight Chance Rain Showers
A slight chance of drizzle before noon, then a slight chance of rain showers and a slight chance of drizzle. Mostly cloudy. High near 64, with temperatures falling to around 57 in the afternoon. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 64°F | Slight Chance Drizzle then Slight Chance Rain Showers | 10 to 15 mph WSW | 11% |
| Tonight | 46°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph SW | 8% |
| Thursday | 58°F | Mostly Cloudy then Chance Rain | 10 to 15 mph WSW | 40% |
| Thursday Night | 39°F | Chance Rain then Cloudy | 5 to 10 mph NW | 41% |
| Friday | 51°F | Partly Sunny | 10 mph NNW | 2% |
| Friday Night | 33°F | Partly Cloudy | 5 to 10 mph NNW | 0% |
| Saturday | 54°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 33°F | Mostly Clear | 0 mph | 1% |
| Sunday | 57°F | Sunny | 0 to 10 mph W | 4% |
| Sunday Night | 34°F | Mostly Clear | 0 to 5 mph W | 1% |
| Monday | 64°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 0 to 5 mph WSW | 1% |
| Tuesday | 64°F | Sunny | 0 to 5 mph WNW | 1% |
| Tuesday Night | 38°F | Partly Cloudy | 0 mph | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mazon, IL
Last spring frost
Apr 20
First fall frost
Oct 23
Growing season
184 days
Hardiness zone
5b
Explore more for Mazon, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Morris 1 Nw, Il (9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.