Bath, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bath, a village in Mason County, Illinois.
This Afternoon
70°F
Light Rain
Rain and a chance of thunderstorms. Mostly cloudy, with a high near 70. South southeast wind around 17 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Bath
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Light Rain | 17 mph SSE | 90% |
| Tonight | 52°F | Light Rain Likely | 10 to 15 mph S | 70% |
| Wednesday | 59°F | Chance Rain Showers then Mostly Cloudy | 10 to 14 mph SW | 10% |
| Wednesday Night | 44°F | Mostly Cloudy | 8 mph WSW | 1% |
| Thursday | 59°F | Mostly Sunny | 7 to 10 mph WSW | 7% |
| Thursday Night | 41°F | Mostly Cloudy then Slight Chance Light Rain | 6 mph NW | 17% |
| Friday | 55°F | Mostly Cloudy | 8 mph N | 13% |
| Friday Night | 35°F | Mostly Cloudy | 0 to 6 mph N | 2% |
| Saturday | 54°F | Mostly Sunny | 2 mph NW | 2% |
| Saturday Night | 34°F | Partly Cloudy | 2 mph WNW | 2% |
| Sunday | 60°F | Sunny | 2 to 6 mph WNW | 7% |
| Sunday Night | 34°F | Mostly Clear | 3 mph W | 4% |
| Monday | 64°F | Sunny | 2 to 8 mph SW | 1% |
| Monday Night | 39°F | Mostly Clear | 5 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Bath (40.190, -90.142). Updated through the day.
Growing snapshot for Bath
Last spring frost
Apr 17
First fall frost
Oct 19
Growing season
185 days
Hardiness zone
6a
More local growing data for Bath: nearby ZIP 62617 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Havana, Il (11.5 mi from Bath). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.