Heidelberg, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Heidelberg, a city in Le Sueur County, Minnesota.
Overnight
48°F
Light Rain
Rain and patchy fog. Cloudy, with a low around 48. Northwest wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Heidelberg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 48°F | Light Rain | 10 mph NW | 94% |
| Wednesday | 52°F | Drizzle then Light Rain | 10 to 15 mph WNW | 96% |
| Wednesday Night | 42°F | Light Rain then Drizzle Likely | 10 to 15 mph NW | 94% |
| Thursday | 48°F | Slight Chance Drizzle then Mostly Cloudy | 10 to 15 mph NNW | 17% |
| Thursday Night | 32°F | Mostly Cloudy | 5 to 10 mph N | 0% |
| Friday | 45°F | Sunny | 0 to 5 mph NNE | 0% |
| Friday Night | 28°F | Mostly Clear | 0 mph | 0% |
| Saturday | 49°F | Sunny | 0 to 5 mph SW | 2% |
| Saturday Night | 34°F | Mostly Clear | 5 mph WSW | 2% |
| Sunday | 54°F | Sunny | 5 mph W | 2% |
| Sunday Night | 36°F | Mostly Clear | 5 mph SW | 0% |
| Monday | 59°F | Mostly Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 37°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 55°F | Sunny | 0 to 5 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Heidelberg (44.493, -93.626). Updated through the day.
Growing snapshot for Heidelberg
Last spring frost
May 2
First fall frost
Oct 5
Growing season
153 days
Hardiness zone
4b
More local growing data for Heidelberg: nearby ZIP 56071 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Jordan 1Ssw, Mn (8.4 mi from Heidelberg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.