Mount Vernon, IN Weather & Growing Conditions
This Afternoon
100°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Sunny. High near 100, with temperatures falling to around 96 in the afternoon. South southeast wind around 1 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 100°F | Slight Chance Showers And Thunderstorms | 1 mph SSE | 21% |
| Tonight | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph E | 23% |
| Saturday | 98°F | Sunny | 2 to 7 mph S | 11% |
| Saturday Night | 73°F | Partly Cloudy | 5 mph SSW | 7% |
| Sunday | 98°F | Sunny | 3 to 8 mph WSW | 7% |
| Sunday Night | 70°F | Partly Cloudy | 3 to 7 mph NNE | 10% |
| Monday | 90°F | Partly Sunny then Chance Showers And Thunderstorms | 5 to 12 mph NNE | 38% |
| Monday Night | 63°F | Chance Showers And Thunderstorms | 7 to 14 mph NNE | 43% |
| Tuesday | 79°F | Chance Showers And Thunderstorms | 8 to 13 mph N | 36% |
| Tuesday Night | 59°F | Partly Cloudy | 6 to 14 mph N | 11% |
| Wednesday | 77°F | Mostly Sunny | 6 to 10 mph N | 5% |
| Wednesday Night | 58°F | Partly Cloudy | 3 to 10 mph NNE | 4% |
| Thursday | 79°F | Mostly Sunny | 3 to 9 mph N | 3% |
| Thursday Night | 59°F | Partly Cloudy | 3 to 9 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mount Vernon, IN
Last spring frost
Apr 7
First fall frost
Oct 28
Growing season
202 days
Hardiness zone
7a
Explore more for Mount Vernon, IN: full frost dates · planting calendar · Indiana frost dates
Climate data from the nearest NOAA station, Mt Vernon, In (0.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.