Tonka Bay, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Tonka Bay, a city in Hennepin County, Minnesota.
This Afternoon
52°F
Light Rain
Rain. Cloudy. High near 52, with temperatures falling to around 49 in the afternoon. West southwest wind around 5 mph. Chance of precipitation is 90%.
7-day forecast for Tonka Bay
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 52°F | Light Rain | 5 mph WSW | 87% |
| Tonight | 42°F | Light Rain | 5 to 20 mph NW | 90% |
| Thursday | 46°F | Cloudy | 10 to 20 mph N | 4% |
| Thursday Night | 31°F | Mostly Cloudy | 5 to 10 mph NNE | 0% |
| Friday | 45°F | Sunny | 0 to 5 mph N | 0% |
| Friday Night | 29°F | Partly Cloudy then Patchy Fog | 0 to 5 mph WSW | 0% |
| Saturday | 50°F | Mostly Sunny | 5 mph SSW | 0% |
| Saturday Night | 36°F | Partly Cloudy | 5 to 10 mph WSW | 1% |
| Sunday | 55°F | Sunny | 5 mph W | 1% |
| Sunday Night | 38°F | Mostly Clear | 5 to 10 mph SW | 0% |
| Monday | 61°F | Mostly Sunny | 10 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 55°F | Mostly Sunny | 5 mph WNW | 1% |
| Tuesday Night | 38°F | Partly Cloudy | 5 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Tonka Bay (44.914, -93.586). Updated through the day.
Growing snapshot for Tonka Bay
Last spring frost
Apr 30
First fall frost
Oct 9
Growing season
160 days
Hardiness zone
5a
More local growing data for Tonka Bay: nearby ZIP 55331 weather · frost dates · planting calendar · Minnesota frost dates
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Climate data from the nearest NOAA station, Chanhassen Wsfo, Mn (4.2 mi from Tonka Bay). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.