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.
Overnight
45°F
Light Rain
Rain and patchy fog. Cloudy, with a low around 45. Northwest wind around 15 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Lake Crystal
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 45°F | Light Rain | 15 mph NW | 93% |
| Wednesday | 48°F | Drizzle Likely then Light Rain | 15 mph WNW | 93% |
| Wednesday Night | 41°F | Drizzle | 15 mph NW | 96% |
| Thursday | 47°F | Mostly Cloudy | 10 to 15 mph NNW | 13% |
| Thursday Night | 32°F | Mostly Cloudy | 5 to 10 mph N | 0% |
| Friday | 45°F | Mostly Sunny | 0 to 5 mph NNE | 0% |
| Friday Night | 27°F | Partly Cloudy | 0 to 5 mph SE | 0% |
| Saturday | 50°F | Mostly Sunny | 5 mph SSW | 1% |
| Saturday Night | 34°F | Mostly Clear | 5 mph WSW | 2% |
| Sunday | 54°F | Sunny | 5 mph W | 1% |
| Sunday Night | 36°F | Mostly Clear | 5 mph SW | 0% |
| Monday | 60°F | Mostly Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 37°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 56°F | Mostly Sunny | 5 mph WNW | 1% |
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 Nov 4, 2026.