Mongo, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mongo, a community in Lagrange County, Indiana.
Tonight
57°F
Mostly Cloudy then Chance Rain Showers
A chance of rain showers after 3am. Mostly cloudy, with a low around 57. East wind 5 to 10 mph. Chance of precipitation is 30%.
7-day forecast for Mongo
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Mostly Cloudy then Chance Rain Showers | 5 to 10 mph E | 29% |
| Saturday | 73°F | Showers And Thunderstorms | 10 mph SE | 90% |
| Saturday Night | 63°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph S | 86% |
| Sunday | 70°F | Showers And Thunderstorms | 5 to 10 mph N | 82% |
| Sunday Night | 52°F | Chance Showers And Thunderstorms | 10 mph NE | 51% |
| Monday | 64°F | Chance Rain Showers | 10 to 15 mph NE | 46% |
| Monday Night | 49°F | Slight Chance Rain Showers | 10 to 15 mph NE | 20% |
| Tuesday | 64°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph NE | 20% |
| Tuesday Night | 51°F | Slight Chance Rain Showers | 10 to 15 mph NE | 20% |
| Wednesday | 64°F | Slight Chance Rain Showers | 10 mph NE | 20% |
| Wednesday Night | 51°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 16% |
| Thursday | 67°F | Partly Sunny | 5 to 10 mph NE | 7% |
| Thursday Night | 51°F | Mostly Cloudy | 5 to 10 mph NE | 7% |
| Friday | 69°F | Mostly Sunny | 5 mph N | 6% |
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
Nearby towns & communities
Adams Lake
Cree Lake
Howe
Lagrange
Ontario
Otter Lake
Scott
Shipshewana
Shipshewana Lake
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.