Anna, IL Weather & Growing Conditions
Overnight
71°F
Mostly Clear
Mostly clear. Low around 71, with temperatures rising to around 73 overnight. South southeast wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 71°F | Mostly Clear | 1 mph SSE | 1% |
| Saturday | 99°F | Sunny | 1 to 7 mph SW | 2% |
| Saturday Night | 72°F | Mostly Clear | 3 mph SSW | 0% |
| Sunday | 97°F | Mostly Sunny | 2 to 6 mph WSW | 0% |
| Sunday Night | 69°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 3 mph N | 21% |
| Monday | 86°F | Showers And Thunderstorms Likely | 3 to 8 mph N | 55% |
| Monday Night | 62°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 to 9 mph NNE | 55% |
| Tuesday | 76°F | Chance Showers And Thunderstorms | 7 to 12 mph N | 26% |
| Tuesday Night | 57°F | Partly Cloudy | 5 to 12 mph N | 10% |
| Wednesday | 76°F | Mostly Sunny | 9 mph N | 1% |
| Wednesday Night | 56°F | Partly Cloudy | 2 to 8 mph N | 1% |
| Thursday | 77°F | Mostly Sunny | 3 to 8 mph N | 3% |
| Thursday Night | 58°F | Partly Cloudy | 2 to 6 mph NNE | 3% |
| Friday | 78°F | Mostly Sunny | 3 to 8 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Anna, IL
Last spring frost
Apr 8
First fall frost
Oct 29
Growing season
203 days
Hardiness zone
7a
Explore more for Anna, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Anna 2 Nne, Il (3.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.