Anna, IL Weather & Growing Conditions
This Afternoon
77°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 5pm, then a chance of showers and thunderstorms. Mostly cloudy. High near 77, with temperatures falling to around 74 in the afternoon. South wind around 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Slight Chance Showers And Thunderstorms | 18 mph S | 26% |
| Tonight | 56°F | Showers And Thunderstorms | 7 to 15 mph S | 99% |
| Wednesday | 67°F | Partly Sunny | 5 to 9 mph WSW | 7% |
| Wednesday Night | 43°F | Mostly Clear | 3 mph SW | 0% |
| Thursday | 68°F | Sunny | 1 to 7 mph SW | 0% |
| Thursday Night | 45°F | Partly Cloudy | 3 mph WNW | 5% |
| Friday | 61°F | Partly Sunny | 3 to 9 mph NNW | 1% |
| Friday Night | 39°F | Partly Cloudy | 2 to 6 mph NNW | 1% |
| Saturday | 57°F | Partly Sunny | 5 mph NNW | 0% |
| Saturday Night | 35°F | Partly Cloudy | 1 mph NNW | 1% |
| Sunday | 62°F | Sunny | 0 to 6 mph NW | 5% |
| Sunday Night | 35°F | Mostly Clear | 2 mph NNW | 5% |
| Monday | 64°F | Sunny | 1 to 7 mph W | 2% |
| Monday Night | 38°F | Mostly Clear | 3 mph SW | 0% |
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 Nov 4, 2026.