Martinsville, IL Weather & Growing Conditions
Today
92°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 11am, then showers and thunderstorms likely between 11am and noon, then a chance of showers and thunderstorms. Partly sunny, with a high near 92. Southwest wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 92°F | Chance Showers And Thunderstorms | 8 mph SW | 57% |
| Tonight | 70°F | Mostly Cloudy | 3 to 7 mph S | 9% |
| Sunday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph NNW | 31% |
| Sunday Night | 62°F | Chance Showers And Thunderstorms | 14 mph NE | 59% |
| Monday | 73°F | Showers And Thunderstorms Likely | 14 mph NE | 68% |
| Monday Night | 56°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 12 to 16 mph NE | 55% |
| Tuesday | 69°F | Slight Chance Showers And Thunderstorms | 15 mph NNE | 25% |
| Tuesday Night | 54°F | Chance Showers And Thunderstorms then Mostly Cloudy | 8 to 15 mph NNE | 25% |
| Wednesday | 71°F | Mostly Sunny | 12 mph N | 7% |
| Wednesday Night | 54°F | Partly Cloudy | 6 to 12 mph N | 5% |
| Thursday | 72°F | Mostly Sunny | 10 mph N | 3% |
| Thursday Night | 56°F | Partly Cloudy | 5 to 10 mph NNE | 4% |
| Friday | 75°F | Mostly Sunny | 7 to 10 mph NNE | 2% |
| Friday Night | 54°F | Mostly Clear | 6 to 9 mph NE | 2% |
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 Sep 19, 2026.