Boswell, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boswell, a town in Benton County, Indiana.
This Afternoon
65°F
Slight Chance Rain Showers
A slight chance of drizzle before 3pm, then a slight chance of rain showers and a slight chance of drizzle. Mostly cloudy. High near 65, with temperatures falling to around 58 in the afternoon. West southwest wind around 15 mph, with gusts as high as 25 mph.
7-day forecast for Boswell
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Slight Chance Rain Showers | 15 mph WSW | 1% |
| Tonight | 47°F | Slight Chance Rain Showers then Cloudy | 10 mph SW | 7% |
| Thursday | 57°F | Mostly Cloudy then Slight Chance Rain | 10 to 15 mph SW | 20% |
| Thursday Night | 42°F | Rain Likely | 5 mph WNW | 59% |
| Friday | 50°F | Mostly Cloudy | 5 to 10 mph NNW | 11% |
| Friday Night | 34°F | Partly Cloudy | 5 mph NNW | 5% |
| Saturday | 52°F | Sunny | 5 mph NW | 1% |
| Saturday Night | 30°F | Mostly Clear | 0 mph | 0% |
| Sunday | 58°F | Sunny | 0 to 5 mph W | 1% |
| Sunday Night | 34°F | Mostly Clear | 0 to 5 mph W | 1% |
| Monday | 62°F | Sunny | 0 to 5 mph WSW | 0% |
| Monday Night | 39°F | Clear | 5 mph SW | 0% |
| Tuesday | 63°F | Sunny | 0 to 5 mph W | 1% |
| Tuesday Night | 38°F | Mostly Clear | 0 mph | 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 Nov 4, 2026.