Karnak, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Karnak, a village in Massac County, Illinois.
Today
87°F
Sunny
Sunny. High near 87, with temperatures falling to around 85 in the afternoon. Northeast wind around 2 mph.
7-day forecast for Karnak
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Sunny | 2 mph NE | 0% |
| Tonight | 64°F | Mostly Clear | 1 mph ENE | 0% |
| Wednesday | 89°F | Sunny | 1 mph SSW | 0% |
| Wednesday Night | 68°F | Mostly Clear | 0 mph | 0% |
| Thursday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 5 mph SSW | 15% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms | 2 mph S | 53% |
| Friday | 88°F | Chance Showers And Thunderstorms | 1 to 5 mph SSW | 53% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 2 mph SW | 43% |
| Saturday | 89°F | Chance Showers And Thunderstorms | 1 to 5 mph SSW | 34% |
| Saturday Night | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 1 mph S | 22% |
| Sunday | 90°F | Mostly Sunny | 1 to 6 mph SSW | 10% |
| Sunday Night | 71°F | Mostly Clear | 1 to 5 mph SSW | 7% |
| Monday | 91°F | Sunny | 2 to 7 mph SSW | 4% |
| Monday Night | 73°F | Mostly Clear | 2 to 6 mph SSW | 4% |
Forecast source: National Weather Service (api.weather.gov) for Karnak (37.294, -88.976). Updated through the day.
Growing snapshot for Karnak
Last spring frost
Apr 3
First fall frost
Nov 5
Growing season
216 days
Hardiness zone
7a
More local growing data for Karnak: nearby ZIP 62956 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Grand Chain Dam 53, Il (8.1 mi from Karnak). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.