Wamac, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Wamac, a city in Marion County, Illinois.
This Afternoon
96°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Sunny, with a high near 96. Heat index values as high as 105. Northwest wind around 1 mph. Chance of precipitation is 30%.
7-day forecast for Wamac
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 96°F | Chance Showers And Thunderstorms | 1 mph NW | 26% |
| Tonight | 71°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 3 mph SE | 24% |
| Saturday | 97°F | Sunny | 2 to 6 mph SW | 6% |
| Saturday Night | 73°F | Partly Cloudy | 3 mph S | 0% |
| Sunday | 95°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 6 mph W | 16% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph N | 42% |
| Monday | 83°F | Showers And Thunderstorms Likely | 5 to 10 mph N | 56% |
| Monday Night | 60°F | Showers And Thunderstorms Likely | 5 to 12 mph N | 56% |
| Tuesday | 74°F | Chance Showers And Thunderstorms then Partly Sunny | 7 to 13 mph N | 27% |
| Tuesday Night | 55°F | Mostly Cloudy | 3 to 13 mph N | 6% |
| Wednesday | 75°F | Mostly Sunny | 5 to 9 mph N | 3% |
| Wednesday Night | 55°F | Partly Cloudy | 2 to 8 mph N | 2% |
| Thursday | 76°F | Mostly Sunny | 2 to 7 mph N | 1% |
| Thursday Night | 57°F | Partly Cloudy | 2 to 7 mph NE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Wamac (38.491, -89.148). Updated through the day.
Growing snapshot for Wamac
Last spring frost
Apr 9
First fall frost
Oct 24
Growing season
196 days
Hardiness zone
6b
More local growing data for Wamac: nearby ZIP 62801 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Iuka 12 Sw, Il (9.3 mi from Wamac). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.