Martinsville, IL Weather & Growing Conditions
Tonight
58°F
Rain
Rain before 1am, then rain showers. Mostly cloudy, with a low around 58. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Rain | 15 to 20 mph S | 95% |
| Wednesday | 65°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph SW | 29% |
| Wednesday Night | 44°F | Mostly Cloudy | 8 mph SW | 0% |
| Thursday | 64°F | Sunny | 7 to 14 mph WSW | 0% |
| Thursday Night | 44°F | Mostly Cloudy | 6 mph WNW | 3% |
| Friday | 58°F | Partly Sunny | 5 to 12 mph NNW | 9% |
| Friday Night | 37°F | Partly Cloudy | 5 to 9 mph NNW | 4% |
| Saturday | 56°F | Mostly Sunny | 6 mph NNW | 2% |
| Saturday Night | 34°F | Partly Cloudy | 3 mph WNW | 1% |
| Sunday | 61°F | Sunny | 3 to 9 mph WNW | 9% |
| Sunday Night | 33°F | Mostly Clear | 6 mph NW | 7% |
| Monday | 63°F | Sunny | 3 to 10 mph W | 4% |
| Monday Night | 38°F | Mostly Clear | 7 mph WSW | 1% |
| Tuesday | 67°F | Sunny | 8 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Martinsville, IL
Last spring frost
Apr 14
First fall frost
Oct 20
Growing season
187 days
Hardiness zone
6b
Explore more for Martinsville, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Casey, Il (6.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.