Forest Lake, MN Weather & Growing Conditions
Tonight
50°F
Rain
Rain and patchy fog. Cloudy, with a low around 50. North northeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Rain | 5 to 10 mph NNE | 99% |
| Wednesday | 56°F | Rain | 5 to 10 mph N | 82% |
| Wednesday Night | 44°F | Light Rain | 10 to 15 mph NNW | 95% |
| Thursday | 49°F | Chance Light Rain then Mostly Cloudy | 10 to 15 mph N | 32% |
| Thursday Night | 34°F | Mostly Cloudy | 5 to 10 mph NNE | 2% |
| Friday | 46°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Friday Night | 30°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 51°F | Mostly Sunny | 0 to 5 mph SSW | 1% |
| Saturday Night | 36°F | Partly Cloudy | 5 mph WSW | 7% |
| Sunday | 55°F | Mostly Sunny | 5 to 10 mph W | 8% |
| Sunday Night | 37°F | Partly Cloudy | 5 mph SSW | 1% |
| Monday | 57°F | Mostly Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 38°F | Mostly Clear | 5 mph WNW | 1% |
| Tuesday | 54°F | Sunny | 5 mph W | 1% |
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 Nov 4, 2026.