Brook, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Brook, a town in Newton County, Indiana.
Tonight
62°F
Mostly Cloudy then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 62. East wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Brook
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph E | 17% |
| Saturday | 82°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 62% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 5 mph SW | 65% |
| Sunday | 75°F | Showers And Thunderstorms Likely | 5 to 10 mph N | 67% |
| Sunday Night | 55°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 64% |
| Monday | 66°F | Showers And Thunderstorms Likely | 10 to 15 mph ENE | 64% |
| Monday Night | 50°F | Chance Rain Showers | 10 to 15 mph NE | 41% |
| Tuesday | 66°F | Slight Chance Rain Showers | 10 mph NE | 21% |
| Tuesday Night | 51°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 19% |
| Wednesday | 68°F | Mostly Cloudy | 5 to 10 mph NNE | 7% |
| Wednesday Night | 51°F | Mostly Cloudy | 0 to 5 mph NNE | 7% |
| Thursday | 70°F | Partly Sunny | 0 to 5 mph NNE | 4% |
| Thursday Night | 52°F | Mostly Cloudy | 0 to 5 mph NNE | 4% |
| Friday | 72°F | Mostly Sunny | 0 to 5 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Brook (40.866, -87.366). Updated through the day.
Growing snapshot for Brook
Last spring frost
Apr 23
First fall frost
Oct 14
Growing season
175 days
Hardiness zone
5b
More local growing data for Brook: nearby ZIP 47922 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Kentland, In (9.3 mi from Brook). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.