Spring Valley, WI Weather & Growing Conditions
Tonight
52°F
Patchy Fog
Rain showers and patchy fog before 10pm, then patchy fog and showers and thunderstorms likely. Cloudy, with a low around 52. East southeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Patchy Fog | 15 mph ESE | 91% |
| Saturday | 63°F | Rain Showers Likely then Chance Drizzle | 10 to 15 mph ENE | 57% |
| Saturday Night | 52°F | Slight Chance Drizzle then Mostly Cloudy | 5 to 10 mph NE | 18% |
| Sunday | 68°F | Partly Sunny | 10 to 15 mph NE | 2% |
| Sunday Night | 45°F | Mostly Cloudy | 5 to 10 mph ENE | 2% |
| Monday | 63°F | Mostly Cloudy | 5 to 10 mph ENE | 7% |
| Monday Night | 41°F | Mostly Cloudy | 5 mph E | 6% |
| Tuesday | 63°F | Mostly Sunny | 5 to 10 mph E | 5% |
| Tuesday Night | 41°F | Mostly Clear | 0 to 5 mph E | 2% |
| Wednesday | 66°F | Sunny | 0 to 5 mph ESE | 0% |
| Wednesday Night | 46°F | Partly Cloudy | 0 to 5 mph SE | 7% |
| Thursday | 69°F | Mostly Sunny | 0 to 5 mph SSE | 10% |
| Thursday Night | 49°F | Partly Cloudy | 0 to 5 mph SSE | 10% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph ESE | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Spring Valley, WI
Last spring frost
May 6
First fall frost
Oct 2
Growing season
148 days
Hardiness zone
4b
Explore more for Spring Valley, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Baldwin, Wi (11.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.