St. Paul, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Paul, a town in Decatur County, Indiana.
This Afternoon
69°F
Slight Chance Light Rain
A slight chance of rain. Mostly cloudy. High near 69, with temperatures falling to around 65 in the afternoon. West southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for St. Paul
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Slight Chance Light Rain | 10 mph WSW | 16% |
| Tonight | 47°F | Mostly Cloudy | 3 to 8 mph WSW | 4% |
| Thursday | 63°F | Mostly Sunny | 5 to 12 mph SW | 0% |
| Thursday Night | 43°F | Mostly Cloudy | 2 to 6 mph WSW | 8% |
| Friday | 55°F | Mostly Cloudy | 2 to 9 mph NW | 11% |
| Friday Night | 35°F | Partly Cloudy | 3 to 8 mph NW | 10% |
| Saturday | 53°F | Mostly Sunny | 2 to 7 mph NW | 0% |
| Saturday Night | 30°F | Partly Cloudy | 3 mph NW | 0% |
| Sunday | 56°F | Sunny | 1 to 7 mph W | 0% |
| Sunday Night | 33°F | Mostly Clear | 1 to 5 mph WNW | 0% |
| Monday | 61°F | Sunny | 0 to 6 mph W | 0% |
| Monday Night | 36°F | Clear | 3 mph SW | 0% |
| Tuesday | 62°F | Sunny | 5 mph WSW | 1% |
| Tuesday Night | 37°F | Mostly Clear | 3 mph NW | 3% |
Forecast source: National Weather Service (api.weather.gov) for St. Paul (39.428, -85.629). Updated through the day.
Growing snapshot for St. Paul
Last spring frost
Apr 15
First fall frost
Oct 26
Growing season
194 days
Hardiness zone
6b
More local growing data for St. Paul: nearby ZIP 47272 weather · frost dates · planting calendar · Indiana frost dates
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Sardinia
St. Omer
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Climate data from the nearest NOAA station, Greensburg, In (8.3 mi from St. Paul). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.