Isanti, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Isanti, a city in Isanti County, Minnesota.
Overnight
53°F
Chance Rain Showers
A chance of rain showers. Cloudy. Low around 53, with temperatures rising to around 57 overnight. East wind around 10 mph. Chance of precipitation is 30%.
7-day forecast for Isanti
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Chance Rain Showers | 10 mph E | 34% |
| Saturday | 63°F | Chance Rain Showers then Cloudy | 10 mph ENE | 25% |
| Saturday Night | 50°F | Mostly Cloudy | 5 to 10 mph NNE | 3% |
| Sunday | 68°F | Partly Sunny | 5 to 10 mph NE | 0% |
| Sunday Night | 46°F | Mostly Cloudy | 5 to 10 mph NE | 1% |
| Monday | 64°F | Mostly Cloudy | 5 to 10 mph ENE | 4% |
| Monday Night | 42°F | Mostly Cloudy | 0 to 5 mph ENE | 3% |
| Tuesday | 65°F | Mostly Sunny | 0 to 5 mph E | 2% |
| Tuesday Night | 43°F | Mostly Clear | 0 to 5 mph ESE | 0% |
| Wednesday | 66°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 47°F | Partly Cloudy | 0 to 5 mph SSE | 9% |
| Thursday | 69°F | Mostly Sunny | 0 to 5 mph SSE | 13% |
| Thursday Night | 49°F | Partly Cloudy | 0 to 5 mph SE | 7% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph ESE | 7% |
Forecast source: National Weather Service (api.weather.gov) for Isanti (45.492, -93.243). Updated through the day.
Growing snapshot for Isanti
Last spring frost
May 2
First fall frost
Oct 4
Growing season
153 days
Hardiness zone
4b
More local growing data for Isanti: nearby ZIP 55040 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Cambridge, Mn (6.4 mi from Isanti). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.