Cairo, IL Weather & Growing Conditions
This Afternoon
66°F
Partly Sunny
Partly sunny. High near 66, with temperatures falling to around 63 in the afternoon. West southwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Partly Sunny | 5 to 10 mph WSW | 0% |
| Tonight | 43°F | Partly Cloudy | 1 to 5 mph SW | 0% |
| Thursday | 69°F | Sunny | 1 to 7 mph SW | 1% |
| Thursday Night | 45°F | Partly Cloudy | 2 mph WNW | 0% |
| Friday | 63°F | Mostly Sunny | 2 to 9 mph NNW | 0% |
| Friday Night | 38°F | Partly Cloudy | 6 mph N | 0% |
| Saturday | 59°F | Mostly Sunny | 5 mph N | 0% |
| Saturday Night | 34°F | Partly Cloudy | 2 mph N | 0% |
| Sunday | 62°F | Mostly Sunny | 0 to 6 mph NNW | 0% |
| Sunday Night | 34°F | Clear | 1 mph N | 0% |
| Monday | 65°F | Sunny | 0 to 3 mph WSW | 0% |
| Monday Night | 37°F | Clear | 1 mph NW | 1% |
| Tuesday | 69°F | Sunny | 0 to 3 mph W | 1% |
| Tuesday Night | 41°F | Mostly Clear | 1 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Cairo, IL
Last spring frost
Apr 2
First fall frost
Oct 31
Growing season
211 days
Hardiness zone
7a
Explore more for Cairo, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Cairo 3N, Il (1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.