Harman US

Joy, IL Weather & Growing Conditions

Overnight
69°F
Patchy Fog
Patchy fog and a chance of showers and thunderstorms. Partly cloudy. Low around 69, with temperatures rising to around 71 overnight. South wind around 5 mph. Chance of precipitation is 30%.

7-day forecast

WhenTempForecastWindPrecip
Overnight 69°F Patchy Fog 5 mph S 26%
Saturday 84°F Patchy Fog 5 to 10 mph S 60%
Saturday Night 66°F Chance Showers And Thunderstorms then Showers And Thunderstorms 5 mph W 79%
Sunday 72°F Showers And Thunderstorms 10 to 15 mph NE 80%
Sunday Night 58°F Chance Showers And Thunderstorms 15 mph NE 54%
Monday 65°F Showers And Thunderstorms Likely 15 mph NE 60%
Monday Night 53°F Chance Rain Showers 10 to 15 mph NE 51%
Tuesday 64°F Chance Rain Showers 10 to 15 mph NE 30%
Tuesday Night 49°F Partly Cloudy 5 to 10 mph NE 5%
Wednesday 68°F Mostly Sunny 5 to 10 mph NE 1%
Wednesday Night 52°F Partly Cloudy 0 to 5 mph NE 1%
Thursday 70°F Mostly Sunny 5 mph NE 5%
Thursday Night 54°F Partly Cloudy 0 to 5 mph NE 4%
Friday 73°F Mostly Sunny 5 mph NE 4%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Joy, IL

Last spring frost
Apr 22
First fall frost
Oct 19
Growing season
181 days
Hardiness zone
5b

Explore more for Joy, IL: full frost dates · planting calendar · Illinois frost dates

Climate data from the nearest NOAA station, Aledo, Il (7.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.