Mongo, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mongo, a community in Lagrange County, Indiana.
Today
72°F
Showers And Thunderstorms
Showers and thunderstorms before 5pm, then a chance of showers and thunderstorms. Cloudy, with a high near 72. Southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Mongo
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Showers And Thunderstorms | 5 to 10 mph SE | 94% |
| Tonight | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph S | 86% |
| Sunday | 71°F | Showers And Thunderstorms | 5 to 10 mph N | 80% |
| Sunday Night | 52°F | Chance Rain Showers | 10 mph NE | 41% |
| Monday | 64°F | Slight Chance Rain Showers | 10 to 15 mph NE | 23% |
| Monday Night | 48°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 17% |
| Tuesday | 64°F | Partly Sunny then Slight Chance Rain Showers | 10 to 15 mph NE | 16% |
| Tuesday Night | 50°F | Chance Rain Showers | 10 to 15 mph NE | 41% |
| Wednesday | 64°F | Chance Rain Showers | 10 to 15 mph NE | 44% |
| Wednesday Night | 51°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 10 mph NE | 37% |
| Thursday | 67°F | Mostly Cloudy | 5 to 10 mph NE | 6% |
| Thursday Night | 51°F | Mostly Cloudy | 5 to 10 mph NE | 6% |
| Friday | 70°F | Mostly Sunny | 5 to 10 mph NE | 4% |
| Friday Night | 49°F | Partly Cloudy | 5 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Mongo (41.681, -85.277). Updated through the day.
Growing snapshot for Mongo
Last spring frost
Apr 26
First fall frost
Oct 21
Growing season
176 days
Hardiness zone
6a
More local growing data for Mongo: nearby ZIP 46771 weather · frost dates · planting calendar · Indiana frost dates
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South Milford
Stroh
Topeka
Wildwood
Climate data from the nearest NOAA station, Lagrange, In (6.8 mi from Mongo). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.