Forest Lake, MN Weather & Growing Conditions
Tonight
54°F
Rain Showers Likely
Rain showers likely and patchy fog before 1am, then a chance of drizzle and patchy fog between 1am and 5am, then patchy fog and a slight chance of drizzle. Cloudy, with a low around 54. East wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Rain Showers Likely | 10 to 15 mph E | 73% |
| Saturday | 63°F | Patchy Fog then Cloudy | 10 mph ENE | 19% |
| Saturday Night | 51°F | Mostly Cloudy | 5 to 10 mph NE | 8% |
| Sunday | 69°F | Partly Sunny | 10 mph NE | 0% |
| Sunday Night | 46°F | Mostly Cloudy | 5 to 10 mph ENE | 1% |
| Monday | 64°F | Mostly Cloudy | 5 to 10 mph ENE | 4% |
| Monday Night | 43°F | Mostly Cloudy | 0 to 5 mph ENE | 2% |
| Tuesday | 65°F | Mostly Sunny | 5 mph E | 2% |
| Tuesday Night | 43°F | Partly Cloudy | 0 to 5 mph ESE | 0% |
| Wednesday | 67°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 47°F | Partly Cloudy | 0 to 5 mph SSE | 9% |
| Thursday | 70°F | Mostly Sunny | 0 to 5 mph SSE | 13% |
| Thursday Night | 50°F | Partly Cloudy | 0 mph | 9% |
| Friday | 72°F | Mostly Sunny | 0 to 5 mph SE | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Forest Lake, MN
Last spring frost
May 3
First fall frost
Oct 5
Growing season
154 days
Hardiness zone
4b
Explore more for Forest Lake, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Forest Lake 5Ne, Mn (7.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.