Boswell, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boswell, a town in Benton County, Indiana.
Today
83°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 5pm. Mostly cloudy. High near 83, with temperatures falling to around 81 in the afternoon. Southeast wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Boswell
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Showers And Thunderstorms Likely | 5 mph SE | 66% |
| Tonight | 67°F | Mostly Cloudy then Chance Showers And Thunderstorms | 0 to 5 mph S | 41% |
| Sunday | 77°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 0 to 10 mph NNW | 81% |
| Sunday Night | 57°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 70% |
| Monday | 66°F | Showers And Thunderstorms Likely | 10 to 15 mph ENE | 61% |
| Monday Night | 52°F | Chance Rain Showers | 10 to 15 mph NE | 45% |
| Tuesday | 66°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 10 to 15 mph NE | 24% |
| Tuesday Night | 52°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 10 mph NNE | 24% |
| Wednesday | 67°F | Partly Sunny | 5 to 10 mph NNE | 8% |
| Wednesday Night | 53°F | Mostly Cloudy | 5 to 10 mph NNE | 7% |
| Thursday | 69°F | Partly Sunny | 5 mph NNE | 3% |
| Thursday Night | 53°F | Partly Cloudy | 0 to 5 mph NNE | 3% |
| Friday | 72°F | Mostly Sunny | 5 mph NE | 2% |
| Friday Night | 52°F | Partly Cloudy | 0 to 5 mph NE | 2% |
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.