Dawson, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dawson, a village in Sangamon County, Illinois.
Tonight
54°F
Rain
Rain before 2am, then a chance of rain showers between 2am and 5am. Cloudy, with a low around 54. South southwest wind 13 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Dawson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Rain | 13 to 17 mph SSW | 95% |
| Wednesday | 60°F | Mostly Cloudy | 13 to 16 mph SW | 12% |
| Wednesday Night | 45°F | Mostly Cloudy | 10 mph SW | 1% |
| Thursday | 61°F | Mostly Sunny | 9 to 14 mph WSW | 4% |
| Thursday Night | 43°F | Mostly Cloudy then Slight Chance Light Rain | 7 mph NW | 22% |
| Friday | 55°F | Partly Sunny | 6 to 12 mph NNW | 13% |
| Friday Night | 37°F | Mostly Cloudy | 2 to 9 mph N | 5% |
| Saturday | 54°F | Mostly Sunny | 5 mph NW | 1% |
| Saturday Night | 35°F | Partly Cloudy | 2 mph W | 1% |
| Sunday | 60°F | Sunny | 2 to 9 mph W | 7% |
| Sunday Night | 35°F | Mostly Clear | 3 to 7 mph WNW | 5% |
| Monday | 64°F | Sunny | 3 to 10 mph SW | 2% |
| Monday Night | 40°F | Mostly Clear | 7 mph WSW | 2% |
| Tuesday | 66°F | Sunny | 7 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Dawson (39.853, -89.462). Updated through the day.
Growing snapshot for Dawson
Last spring frost
Apr 15
First fall frost
Oct 22
Growing season
188 days
Hardiness zone
6a
More local growing data for Dawson: nearby ZIP 62520 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Auburn
Berlin
Buffalo
Cantrall
Chatham
Curran
Divernon
Grandview
Illiopolis
Jerome
Leland Grove
Loami
Mechanicsburg
New Berlin
Pawnee
Pleasant Plains
Riverton
Rochester
Sherman
Southern View
Spaulding
Springfield
Thayer
Williamsville
Climate data from the nearest NOAA station, Springfield #2, Il (11.9 mi from Dawson). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.