Dawson, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dawson, a village in Sangamon County, Illinois.
Overnight
64°F
Clear
Clear, with a low around 64. South southeast wind around 3 mph.
7-day forecast for Dawson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Clear | 3 mph SSE | 0% |
| Tuesday | 87°F | Sunny | 6 mph SSE | 0% |
| Tuesday Night | 68°F | Mostly Clear | 6 mph SSE | 0% |
| Wednesday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 7 mph S | 18% |
| Wednesday Night | 69°F | Chance Showers And Thunderstorms | 6 mph S | 80% |
| Thursday | 82°F | Showers And Thunderstorms | 6 mph SSW | 80% |
| Thursday Night | 66°F | Slight Chance Showers And Thunderstorms | 1 to 5 mph SSE | 20% |
| Friday | 84°F | Mostly Sunny | 3 mph SW | 9% |
| Friday Night | 67°F | Slight Chance Showers And Thunderstorms | 2 mph SSW | 20% |
| Saturday | 87°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 6 mph SSW | 20% |
| Saturday Night | 72°F | Mostly Clear | 5 to 8 mph S | 10% |
| Sunday | 89°F | Sunny | 8 to 12 mph SSW | 5% |
| Sunday Night | 72°F | Mostly Clear | 10 mph SSW | 12% |
| Monday | 90°F | Mostly Sunny | 8 to 12 mph SSW | 13% |
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 Aug 4, 2026.