Bath, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bath, a village in Mason County, Illinois.
Tonight
71°F
Partly Cloudy
Partly cloudy, with a low around 71. East southeast wind around 7 mph, with gusts as high as 16 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Bath
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 71°F | Partly Cloudy | 7 mph ESE | 10% |
| Saturday | 90°F | Mostly Cloudy | 7 mph SSW | 10% |
| Saturday Night | 68°F | Slight Chance Showers And Thunderstorms | 6 mph S | 44% |
| Sunday | 81°F | Rain Showers Likely | 1 to 9 mph NNW | 66% |
| Sunday Night | 59°F | Showers And Thunderstorms Likely | 6 to 9 mph NE | 68% |
| Monday | 68°F | Showers And Thunderstorms Likely | 9 mph NE | 68% |
| Monday Night | 54°F | Chance Showers And Thunderstorms | 6 to 9 mph NE | 43% |
| Tuesday | 66°F | Chance Rain Showers | 9 mph NE | 35% |
| Tuesday Night | 51°F | Mostly Cloudy | 3 to 7 mph NNE | 5% |
| Wednesday | 70°F | Partly Sunny | 3 to 7 mph NNE | 3% |
| Wednesday Night | 53°F | Partly Cloudy | 1 to 5 mph NNE | 1% |
| Thursday | 71°F | Mostly Sunny | 5 mph NNE | 4% |
| Thursday Night | 55°F | Partly Cloudy | 3 mph NNE | 4% |
| Friday | 73°F | Mostly Sunny | 1 to 5 mph NE | 5% |
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 Sep 19, 2026.