Heidelberg, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Heidelberg, a city in Le Sueur County, Minnesota.
Tonight
47°F
Rain
Rain and patchy fog. Cloudy. Low around 47, with temperatures rising to around 50 overnight. North wind around 10 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Heidelberg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Rain | 10 mph N | 97% |
| Wednesday | 53°F | Light Rain | 10 mph NNW | 93% |
| Wednesday Night | 42°F | Light Rain | 10 to 15 mph NW | 97% |
| Thursday | 48°F | Chance Light Rain then Mostly Cloudy | 10 to 15 mph NNW | 49% |
| Thursday Night | 34°F | Mostly Cloudy | 5 to 10 mph N | 3% |
| Friday | 46°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Friday Night | 30°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph SW | 1% |
| Saturday Night | 35°F | Partly Cloudy | 5 mph WSW | 7% |
| Sunday | 56°F | Sunny | 5 mph W | 5% |
| Sunday Night | 37°F | Partly Cloudy | 5 to 10 mph SSW | 0% |
| Monday | 59°F | Mostly Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 38°F | Mostly Clear | 5 mph WNW | 1% |
| Tuesday | 55°F | Sunny | 5 mph W | 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.