Rio, WI Weather & Growing Conditions
Today
61°F
Slight Chance Rain Showers
A slight chance of rain showers. Cloudy. High near 61, with temperatures falling to around 52 in the afternoon. Southwest wind 10 to 15 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 61°F | Slight Chance Rain Showers | 10 to 15 mph SW | 15% |
| Tonight | 45°F | Rain Showers Likely | 10 to 15 mph SW | 60% |
| Thursday | 53°F | Rain Showers Likely then Chance Light Rain | 10 to 15 mph W | 66% |
| Thursday Night | 36°F | Mostly Cloudy | 10 to 15 mph N | 13% |
| Friday | 47°F | Partly Sunny | 5 to 15 mph N | 3% |
| Friday Night | 28°F | Mostly Clear | 0 to 5 mph N | 0% |
| Saturday | 50°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 32°F | Mostly Clear | 5 mph W | 3% |
| Sunday | 55°F | Sunny | 5 to 10 mph W | 7% |
| Sunday Night | 34°F | Mostly Clear | 5 mph W | 0% |
| Monday | 60°F | Mostly Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 5 to 10 mph W | 1% |
| Tuesday | 59°F | Sunny | 5 to 10 mph NW | 1% |
| Tuesday Night | 37°F | Partly Cloudy | 0 to 5 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Rio, WI
Last spring frost
May 4
First fall frost
Oct 6
Growing season
154 days
Hardiness zone
5a
Explore more for Rio, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Arlington, Wi (10.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.