Middletown, IL Weather & Growing Conditions
Tonight
54°F
Rain then Rain Showers Likely
Rain and a slight chance of thunderstorms before midnight, then rain showers likely. Cloudy, with a low around 54. South wind 13 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Rain then Rain Showers Likely | 13 to 17 mph S | 96% |
| Wednesday | 60°F | Chance Rain Showers then Mostly Cloudy | 12 to 15 mph SW | 13% |
| Wednesday Night | 44°F | Mostly Cloudy | 10 mph SW | 1% |
| Thursday | 60°F | Mostly Sunny | 8 to 13 mph WSW | 5% |
| Thursday Night | 42°F | Mostly Cloudy then Slight Chance Light Rain | 7 mph NW | 23% |
| Friday | 55°F | Mostly Cloudy | 7 to 10 mph NNW | 13% |
| Friday Night | 36°F | Mostly Cloudy | 2 to 8 mph N | 5% |
| Saturday | 54°F | Mostly Sunny | 5 mph NW | 1% |
| Saturday Night | 34°F | Partly Cloudy | 2 mph W | 1% |
| Sunday | 60°F | Sunny | 2 to 8 mph W | 9% |
| Sunday Night | 34°F | Mostly Clear | 6 mph W | 5% |
| Monday | 64°F | Sunny | 3 to 10 mph SW | 2% |
| Monday Night | 39°F | Mostly Clear | 3 to 7 mph WSW | 2% |
| Tuesday | 66°F | Sunny | 3 to 7 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Middletown, IL
Last spring frost
Apr 17
First fall frost
Oct 18
Growing season
182 days
Hardiness zone
6a
Explore more for Middletown, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Mason City 4Se, Il (8.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.