St. Leo, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Leo, a city in Yellow Medicine County, Minnesota.
Today
71°F
Patchy Smoke then Partly Sunny
Patchy smoke before 11am. Partly sunny, with a high near 71. Northwest wind 5 to 10 mph.
7-day forecast for St. Leo
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 71°F | Patchy Smoke then Partly Sunny | 5 to 10 mph NW | 4% |
| Tonight | 53°F | Mostly Clear | 5 mph WSW | 2% |
| Wednesday | 76°F | Sunny | 5 to 10 mph SW | 1% |
| Wednesday Night | 59°F | Mostly Clear | 5 to 15 mph SSW | 1% |
| Thursday | 82°F | Sunny | 10 to 15 mph SW | 2% |
| Thursday Night | 63°F | Mostly Clear | 5 to 15 mph SSW | 5% |
| Friday | 84°F | Sunny | 10 to 15 mph SW | 10% |
| Friday Night | 62°F | Mostly Clear | 5 to 10 mph SSW | 11% |
| Saturday | 84°F | Sunny | 5 to 10 mph SSW | 7% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms | 10 mph E | 26% |
| Sunday | 82°F | Chance Showers And Thunderstorms then Mostly Sunny | 5 to 10 mph ENE | 26% |
| Sunday Night | 63°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph E | 20% |
| Monday | 81°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph NE | 20% |
| Monday Night | 63°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph NE | 15% |
Forecast source: National Weather Service (api.weather.gov) for St. Leo (44.717, -96.053). Updated through the day.
Growing snapshot for St. Leo
Last spring frost
May 2
First fall frost
Oct 5
Growing season
156 days
Hardiness zone
5a
More local growing data for St. Leo: nearby ZIP 56291 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Canby, Mn (12.2 mi from St. Leo). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.