Annapolis, IL Weather & Growing Conditions
Today
66°F
Chance Light Rain then Slight Chance Drizzle
A chance of rain before 8am, then a slight chance of drizzle. Mostly cloudy. High near 66, with temperatures falling to around 61 in the afternoon. Southwest wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 66°F | Chance Light Rain then Slight Chance Drizzle | 10 to 15 mph SW | 32% |
| Tonight | 44°F | Slight Chance Drizzle then Mostly Cloudy | 7 to 10 mph WSW | 10% |
| Thursday | 64°F | Mostly Sunny | 9 to 14 mph WSW | 0% |
| Thursday Night | 44°F | Mostly Cloudy | 6 mph WNW | 0% |
| Friday | 57°F | Partly Sunny | 5 to 12 mph NNW | 2% |
| Friday Night | 35°F | Partly Cloudy | 5 to 9 mph NNW | 0% |
| Saturday | 55°F | Sunny | 7 mph NNW | 0% |
| Saturday Night | 32°F | Partly Cloudy | 3 mph NW | 0% |
| Sunday | 60°F | Sunny | 3 to 9 mph WNW | 2% |
| Sunday Night | 33°F | Clear | 5 mph W | 0% |
| Monday | 63°F | Sunny | 2 to 8 mph SW | 0% |
| Monday Night | 38°F | Clear | 5 mph SW | 0% |
| Tuesday | 67°F | Sunny | 7 mph W | 1% |
| Tuesday Night | 38°F | Mostly Clear | 3 mph NNW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Annapolis, IL
Last spring frost
Apr 13
First fall frost
Oct 22
Growing season
190 days
Hardiness zone
6b
Explore more for Annapolis, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Robinson, Il (9.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.