Lake Crystal, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Crystal, a city in Blue Earth County, Minnesota.
Today
71°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 5pm. Mostly cloudy, with a high near 71. Northwest wind around 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Lake Crystal
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 71°F | Chance Showers And Thunderstorms | 10 mph NW | 30% |
| Tonight | 54°F | Partly Cloudy | 0 to 5 mph WNW | 12% |
| Wednesday | 74°F | Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 56°F | Mostly Clear | 0 to 5 mph S | 0% |
| Thursday | 79°F | Sunny | 5 to 10 mph S | 1% |
| Thursday Night | 62°F | Mostly Clear | 10 mph S | 3% |
| Friday | 82°F | Sunny | 10 mph SSW | 11% |
| Friday Night | 64°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 22% |
| Saturday | 83°F | Sunny | 5 to 10 mph S | 12% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 10 mph SE | 44% |
| Sunday | 82°F | Chance Showers And Thunderstorms | 5 to 10 mph SE | 44% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph ENE | 32% |
| Monday | 81°F | Chance Showers And Thunderstorms | 10 mph ENE | 32% |
| Monday Night | 65°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 10 mph NE | 23% |
Forecast source: National Weather Service (api.weather.gov) for Lake Crystal (44.105, -94.219). Updated through the day.
Growing snapshot for Lake Crystal
Last spring frost
Apr 30
First fall frost
Oct 9
Growing season
161 days
Hardiness zone
5a
More local growing data for Lake Crystal: nearby ZIP 56055 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Amboy
Eagle Lake
Garden City
Good Thunder
Madison Lake
Mankato
Mapleton
Minnesota Lake
Pemberton
Skyline
St. Clair
Vernon Center
Climate data from the nearest NOAA station, Mankato, Mn (10.8 mi from Lake Crystal). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.