Harman US

Carman, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Carman, a community in Henderson County, Illinois.

Tonight
67°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy. Low around 67, with temperatures rising to around 69 overnight. Northeast wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast for Carman

WhenTempForecastWindPrecip
Tonight 67°F Chance Showers And Thunderstorms 0 to 5 mph NE 61%
Sunday 74°F Showers And Thunderstorms Likely then Chance Showers And Thunderstorms 5 to 10 mph N 66%
Sunday Night 59°F Chance Showers And Thunderstorms 10 mph NE 66%
Monday 64°F Showers And Thunderstorms 10 mph NE 81%
Monday Night 55°F Rain Showers Likely 5 to 10 mph NE 69%
Tuesday 63°F Chance Rain Showers 10 mph NE 45%
Tuesday Night 50°F Mostly Cloudy 5 to 10 mph NE 5%
Wednesday 65°F Partly Sunny 5 mph NE 0%
Wednesday Night 53°F Partly Cloudy 0 to 5 mph NE 0%
Thursday 69°F Partly Sunny 0 to 5 mph NE 3%
Thursday Night 57°F Mostly Cloudy then Slight Chance Rain Showers 0 mph 15%
Friday 73°F Slight Chance Rain Showers 0 to 5 mph NE 15%
Friday Night 57°F Partly Cloudy 0 to 5 mph NE 6%
Saturday 74°F Mostly Sunny 0 to 5 mph E 6%

Forecast source: National Weather Service (api.weather.gov) for Carman (40.736, -91.062). Updated through the day.

Growing snapshot for Carman

Last spring frost
Apr 18
First fall frost
Oct 20
Growing season
185 days
Hardiness zone
6a

More local growing data for Carman: nearby ZIP 61425 weather · frost dates · planting calendar · Illinois frost dates

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Climate data from the nearest NOAA station, Burlington 2S, Ia (4.1 mi from Carman). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.