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
60°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy, with a high near 60. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Tonka Bay
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 60°F | Showers And Thunderstorms | 15 mph E | 82% |
| Tonight | 56°F | Showers And Thunderstorms | 15 mph E | 87% |
| Saturday | 63°F | Rain Showers Likely then Drizzle Likely | 10 mph NE | 62% |
| Saturday Night | 54°F | Mostly Cloudy | 10 mph NNE | 13% |
| Sunday | 68°F | Partly Sunny | 10 mph NE | 2% |
| Sunday Night | 49°F | Mostly Cloudy | 10 mph ENE | 4% |
| Monday | 63°F | Mostly Cloudy | 5 to 10 mph ENE | 12% |
| Monday Night | 45°F | Mostly Cloudy | 5 mph ENE | 9% |
| Tuesday | 64°F | Mostly Sunny | 5 mph E | 3% |
| Tuesday Night | 45°F | Partly Cloudy | 5 mph ESE | 1% |
| Wednesday | 66°F | Sunny | 5 mph SE | 0% |
| Wednesday Night | 50°F | Partly Cloudy | 0 to 5 mph SSE | 12% |
| Thursday | 69°F | Mostly Sunny | 5 mph SSE | 14% |
| Thursday Night | 52°F | Partly Cloudy | 5 mph SSE | 6% |
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 Sep 19, 2026.