Heidelberg, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Heidelberg, a city in Le Sueur County, Minnesota.
Overnight
63°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Cloudy. Low around 63, with temperatures rising to around 67 overnight. West northwest wind around 10 mph. Chance of precipitation is 70%.
7-day forecast for Heidelberg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Showers And Thunderstorms Likely | 10 mph WNW | 71% |
| Tuesday | 72°F | Chance Showers And Thunderstorms then Mostly Cloudy | 10 mph NW | 33% |
| Tuesday Night | 54°F | Partly Cloudy | 5 to 10 mph WNW | 13% |
| Wednesday | 74°F | Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 56°F | Mostly Clear | 0 to 5 mph SSW | 0% |
| Thursday | 77°F | Sunny | 5 to 10 mph SSW | 1% |
| Thursday Night | 62°F | Mostly Clear | 10 mph S | 5% |
| Friday | 81°F | Sunny | 10 mph SSW | 8% |
| Friday Night | 63°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 19% |
| Saturday | 81°F | Sunny | 5 to 10 mph S | 14% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms | 10 mph S | 47% |
| Sunday | 80°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 47% |
| Sunday Night | 64°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph NE | 23% |
| Monday | 79°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph ENE | 23% |
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 Aug 4, 2026.