Leroy, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Leroy, a community in Lake County, Indiana.
Today
78°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 8am, then showers and thunderstorms between 8am and noon, then showers and thunderstorms likely. Cloudy, with a high near 78. Southeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Leroy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 95% |
| Tonight | 64°F | Showers And Thunderstorms Likely | 5 mph SSE | 83% |
| Sunday | 72°F | Showers And Thunderstorms Likely | 5 to 15 mph N | 61% |
| Sunday Night | 54°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 42% |
| Monday | 66°F | Chance Rain Showers | 10 to 15 mph ENE | 44% |
| Monday Night | 50°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 26% |
| Tuesday | 64°F | Slight Chance Rain Showers | 10 to 15 mph NE | 18% |
| Tuesday Night | 51°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 18% |
| Wednesday | 66°F | Partly Sunny | 5 to 10 mph NNE | 8% |
| Wednesday Night | 51°F | Mostly Cloudy | 5 to 10 mph NNE | 6% |
| Thursday | 68°F | Partly Sunny | 5 to 10 mph NNE | 4% |
| Thursday Night | 52°F | Mostly Cloudy | 5 to 10 mph NNE | 4% |
| Friday | 71°F | Mostly Sunny | 5 to 10 mph NNE | 2% |
| Friday Night | 51°F | Partly Cloudy | 0 to 10 mph NE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Leroy (41.359, -87.271). Updated through the day.
Growing snapshot for Leroy
Last spring frost
Apr 29
First fall frost
Oct 16
Growing season
171 days
Hardiness zone
5b
More local growing data for Leroy: nearby ZIP 46307 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Cedar Lake
Crown Point
Dyer
East Chicago
Gary
Griffith
Hammond
Highland
Hobart
Lake Dalecarlia
Lake Station
Lowell
Merrillville
Munster
New Chicago
Ross
Schererville
Schneider
Shelby
St. John
Whiting
Winfield
Climate data from the nearest NOAA station, Lowell, In (10.6 mi from Leroy). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.