Boswell, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boswell, a town in Benton County, Indiana.
Tonight
64°F
Partly Cloudy
Partly cloudy, with a low around 64. East wind 5 to 10 mph.
7-day forecast for Boswell
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 64°F | Partly Cloudy | 5 to 10 mph E | 3% |
| Saturday | 83°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 55% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 5 mph SSW | 52% |
| Sunday | 78°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph N | 62% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 10 mph NE | 62% |
| Monday | 68°F | Showers And Thunderstorms Likely | 10 to 15 mph ENE | 63% |
| Monday Night | 53°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 43% |
| Tuesday | 67°F | Chance Showers And Thunderstorms | 10 mph NE | 25% |
| Tuesday Night | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NNE | 16% |
| Wednesday | 68°F | Partly Sunny | 5 to 10 mph NNE | 6% |
| Wednesday Night | 53°F | Mostly Cloudy | 0 to 10 mph NNE | 6% |
| Thursday | 70°F | Partly Sunny | 5 mph NNE | 5% |
| Thursday Night | 54°F | Mostly Cloudy | 0 to 5 mph NNE | 5% |
| Friday | 72°F | Mostly Sunny | 0 to 5 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Boswell (40.517, -87.375). Updated through the day.
Growing snapshot for Boswell
Last spring frost
Apr 25
First fall frost
Oct 13
Growing season
169 days
Hardiness zone
5b
More local growing data for Boswell: nearby ZIP 47921 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Boswell 4Wnw, In (5.7 mi from Boswell). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.