Sayner, WI Weather & Growing Conditions
Overnight
49°F
Slight Chance Rain Showers
A slight chance of rain showers. Cloudy, with a low around 49. East southeast wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 49°F | Slight Chance Rain Showers | 5 mph ESE | 15% |
| Saturday | 60°F | Chance Rain Showers | 7 mph ESE | 34% |
| Saturday Night | 47°F | Slight Chance Rain Showers then Mostly Cloudy | 5 mph NE | 20% |
| Sunday | 62°F | Partly Sunny | 6 to 10 mph NNE | 3% |
| Sunday Night | 38°F | Mostly Cloudy | 3 to 9 mph NE | 0% |
| Monday | 62°F | Partly Sunny | 6 mph E | 0% |
| Monday Night | 35°F | Partly Cloudy then Patchy Fog | 1 to 5 mph E | 0% |
| Tuesday | 64°F | Patchy Frost then Sunny | 1 to 6 mph E | 0% |
| Tuesday Night | 38°F | Mostly Clear then Patchy Fog | 1 to 5 mph ESE | 0% |
| Wednesday | 67°F | Patchy Fog then Sunny | 2 to 6 mph ESE | 0% |
| Wednesday Night | 40°F | Patchy Fog | 0 to 3 mph ESE | 1% |
| Thursday | 68°F | Patchy Fog then Mostly Sunny | 0 to 3 mph E | 2% |
| Thursday Night | 43°F | Partly Cloudy | 2 mph SE | 3% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph S | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sayner, WI
Last spring frost
May 19
First fall frost
Oct 3
Growing season
136 days
Hardiness zone
4b
Explore more for Sayner, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, St Germain, Wi (11 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.