Martinsville, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Martinsville, a city in Clark County, Illinois.
This Afternoon
65°F
Slight Chance Drizzle
A slight chance of drizzle. Mostly cloudy. High near 65, with temperatures falling to around 57 in the afternoon. West southwest wind around 13 mph, with gusts as high as 20 mph.
7-day forecast for Martinsville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Slight Chance Drizzle | 13 mph WSW | 10% |
| Tonight | 46°F | Patchy Drizzle then Mostly Cloudy | 5 to 8 mph WSW | 10% |
| Thursday | 61°F | Mostly Sunny | 7 to 13 mph WSW | 3% |
| Thursday Night | 42°F | Mostly Cloudy | 3 to 8 mph WNW | 10% |
| Friday | 54°F | Partly Sunny | 8 to 13 mph NNW | 2% |
| Friday Night | 32°F | Mostly Clear | 5 to 8 mph NNW | 0% |
| Saturday | 54°F | Sunny | 3 to 7 mph NNW | 0% |
| Saturday Night | 30°F | Mostly Clear | 2 mph NW | 0% |
| Sunday | 59°F | Sunny | 2 to 7 mph WNW | 0% |
| Sunday Night | 32°F | Mostly Clear | 3 mph WNW | 0% |
| Monday | 64°F | Sunny | 1 to 7 mph WSW | 0% |
| Monday Night | 36°F | Clear | 5 mph WSW | 0% |
| Tuesday | 65°F | Sunny | 6 mph W | 2% |
| Tuesday Night | 37°F | Mostly Clear | 3 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Martinsville (39.338, -87.881). Updated through the day.
Growing snapshot for Martinsville
Last spring frost
Apr 14
First fall frost
Oct 20
Growing season
187 days
Hardiness zone
6b
More local growing data for Martinsville: nearby ZIP 62442 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Casey, Il (6.5 mi from Martinsville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.