Mongo, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mongo, a community in Lagrange County, Indiana.
This Afternoon
68°F
Rain Showers Likely
Rain showers likely. Mostly cloudy, with a high near 68. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Mongo
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Rain Showers Likely | 10 to 15 mph SW | 56% |
| Tonight | 48°F | Mostly Cloudy | 10 mph SW | 10% |
| Thursday | 56°F | Mostly Cloudy then Chance Rain Showers | 10 to 15 mph SW | 27% |
| Thursday Night | 41°F | Rain Showers | 5 to 10 mph W | 76% |
| Friday | 50°F | Chance Rain Showers | 5 to 10 mph NW | 31% |
| Friday Night | 34°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NW | 31% |
| Saturday | 51°F | Mostly Sunny | 5 to 10 mph NW | 6% |
| Saturday Night | 33°F | Partly Cloudy | 5 mph W | 3% |
| Sunday | 54°F | Mostly Sunny | 5 to 10 mph W | 10% |
| Sunday Night | 34°F | Mostly Clear | 5 to 10 mph W | 10% |
| Monday | 58°F | Sunny | 5 to 10 mph W | 4% |
| Monday Night | 39°F | Mostly Clear | 5 mph SW | 2% |
| Tuesday | 61°F | Sunny | 5 to 10 mph W | 0% |
| Tuesday Night | 37°F | Partly Cloudy | 0 to 5 mph NW | 2% |
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 Nov 4, 2026.