Martinsville, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Martinsville, a city in Clark County, Illinois.
Today
85°F
Patchy Fog then Sunny
Patchy fog before 9am. Sunny, with a high near 85. East southeast wind around 3 mph.
7-day forecast for Martinsville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Patchy Fog then Sunny | 3 mph ESE | 0% |
| Tonight | 63°F | Mostly Clear | 2 mph SE | 0% |
| Wednesday | 87°F | Sunny | 1 to 5 mph S | 0% |
| Wednesday Night | 67°F | Partly Cloudy then Chance Rain Showers | 5 mph S | 29% |
| Thursday | 84°F | Showers And Thunderstorms Likely | 3 to 8 mph SSW | 56% |
| Thursday Night | 67°F | Chance Showers And Thunderstorms | 5 mph SSW | 43% |
| Friday | 84°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 2 to 6 mph SSW | 25% |
| Friday Night | 67°F | Slight Chance Showers And Thunderstorms | 1 to 5 mph SSW | 22% |
| Saturday | 85°F | Slight Chance Showers And Thunderstorms | 6 mph SSW | 20% |
| Saturday Night | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 6 mph SSW | 17% |
| Sunday | 87°F | Sunny | 7 to 12 mph SSW | 9% |
| Sunday Night | 71°F | Mostly Clear | 10 mph SSW | 9% |
| Monday | 88°F | Mostly Sunny | 8 to 12 mph SW | 14% |
| Monday Night | 72°F | Chance Showers And Thunderstorms | 9 mph SSW | 25% |
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 Aug 4, 2026.