Dawson, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dawson, a village in Sangamon County, Illinois.
Tonight
72°F
Partly Cloudy
Partly cloudy, with a low around 72. East southeast wind around 8 mph, with gusts as high as 16 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Dawson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 72°F | Partly Cloudy | 8 mph ESE | 6% |
| Saturday | 92°F | Partly Sunny | 9 mph SSW | 13% |
| Saturday Night | 70°F | Mostly Cloudy then Chance Showers And Thunderstorms | 7 mph SSW | 26% |
| Sunday | 85°F | Chance Rain Showers | 3 to 10 mph NNW | 53% |
| Sunday Night | 62°F | Chance Showers And Thunderstorms | 9 to 13 mph NE | 68% |
| Monday | 72°F | Showers And Thunderstorms Likely | 13 mph NE | 68% |
| Monday Night | 56°F | Showers And Thunderstorms Likely | 9 to 14 mph NE | 55% |
| Tuesday | 68°F | Chance Rain Showers | 13 mph NE | 32% |
| Tuesday Night | 53°F | Mostly Cloudy | 6 to 13 mph NNE | 5% |
| Wednesday | 71°F | Partly Sunny | 7 to 10 mph NNE | 2% |
| Wednesday Night | 54°F | Partly Cloudy | 3 to 9 mph NNE | 1% |
| Thursday | 72°F | Mostly Sunny | 3 to 9 mph NNE | 3% |
| Thursday Night | 56°F | Partly Cloudy | 3 to 7 mph NNE | 5% |
| Friday | 74°F | Mostly Sunny | 3 to 9 mph NNE | 5% |
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
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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 Sep 19, 2026.