St. Croix Falls, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Croix Falls, a city in Polk County, Wisconsin.
Today
61°F
Slight Chance Drizzle
A slight chance of drizzle before 4pm. Cloudy, with a high near 61. East northeast wind 5 to 10 mph. Chance of precipitation is 20%.
7-day forecast for St. Croix Falls
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 61°F | Slight Chance Drizzle | 5 to 10 mph ENE | 24% |
| Tonight | 51°F | Mostly Cloudy | 5 mph NE | 6% |
| Sunday | 66°F | Partly Sunny | 5 to 15 mph NE | 0% |
| Sunday Night | 46°F | Mostly Cloudy | 5 to 10 mph ENE | 1% |
| Monday | 65°F | Partly Sunny | 5 mph E | 1% |
| Monday Night | 41°F | Partly Cloudy | 0 to 5 mph ENE | 1% |
| Tuesday | 65°F | Sunny | 5 mph ESE | 1% |
| Tuesday Night | 41°F | Mostly Clear | 0 to 5 mph ESE | 1% |
| Wednesday | 67°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 46°F | Mostly Clear | 0 mph | 3% |
| Thursday | 69°F | Mostly Sunny | 0 to 5 mph SE | 6% |
| Thursday Night | 49°F | Partly Cloudy | 0 mph | 5% |
| Friday | 72°F | Mostly Sunny | 0 to 5 mph SE | 5% |
| Friday Night | 50°F | Partly Cloudy | 0 to 5 mph SSE | 8% |
Forecast source: National Weather Service (api.weather.gov) for St. Croix Falls (45.411, -92.625). Updated through the day.
Growing snapshot for St. Croix Falls
Last spring frost
May 4
First fall frost
Oct 8
Growing season
156 days
Hardiness zone
4b
More local growing data for St. Croix Falls: nearby ZIP 54009 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Amery
Balsam Lake
Centuria
Clear Lake
Dresser
Frederic
Luck
Milltown
Osceola
Star Prairie
Turtle Lake
Climate data from the nearest NOAA station, St Croix Falls, Wi (5.3 mi from St. Croix Falls). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.