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Assumption, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Assumption, a city in Christian County, Illinois.

This Afternoon
90°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 90. West southwest wind around 6 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Assumption

WhenTempForecastWindPrecip
This Afternoon 90°F Slight Chance Showers And Thunderstorms 6 mph WSW 18%
Tonight 69°F Mostly Cloudy 6 mph S 10%
Sunday 87°F Partly Sunny then Chance Showers And Thunderstorms 5 to 10 mph NW 35%
Sunday Night 61°F Chance Showers And Thunderstorms 8 to 12 mph NNE 56%
Monday 74°F Showers And Thunderstorms Likely 12 mph NE 66%
Monday Night 55°F Chance Rain Showers 7 to 10 mph NE 37%
Tuesday 69°F Chance Rain Showers 12 mph NE 33%
Tuesday Night 52°F Mostly Cloudy 5 to 10 mph NNE 8%
Wednesday 70°F Partly Sunny 9 mph NNE 3%
Wednesday Night 53°F Partly Cloudy 3 to 8 mph NNE 0%
Thursday 74°F Partly Sunny 3 to 7 mph NNE 1%
Thursday Night 55°F Mostly Cloudy 2 to 6 mph NNE 8%
Friday 76°F Partly Sunny then Slight Chance Rain Showers 3 to 7 mph NNE 15%
Friday Night 54°F Slight Chance Rain Showers then Partly Cloudy 2 to 6 mph NE 15%

Forecast source: National Weather Service (api.weather.gov) for Assumption (39.518, -89.048). Updated through the day.

Growing snapshot for Assumption

Last spring frost
Apr 17
First fall frost
Oct 23
Growing season
188 days
Hardiness zone
6a

More local growing data for Assumption: nearby ZIP 62510 weather · frost dates · planting calendar · Illinois frost dates

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Climate data from the nearest NOAA station, Pana, Il (11.6 mi from Assumption). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.