Eureka, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Eureka, a community in Winnebago County, Wisconsin.
Overnight
56°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy, with a low around 56. East wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Eureka
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Showers And Thunderstorms | 10 mph E | 96% |
| Saturday | 65°F | Showers And Thunderstorms | 8 to 12 mph E | 91% |
| Saturday Night | 54°F | Showers And Thunderstorms Likely | 10 mph NE | 70% |
| Sunday | 67°F | Mostly Sunny | 10 to 15 mph NE | 10% |
| Sunday Night | 47°F | Mostly Cloudy | 13 mph NE | 1% |
| Monday | 61°F | Mostly Cloudy | 9 to 13 mph NE | 2% |
| Monday Night | 45°F | Mostly Cloudy | 7 to 10 mph NE | 1% |
| Tuesday | 61°F | Mostly Sunny | 7 to 13 mph NE | 1% |
| Tuesday Night | 45°F | Mostly Clear | 5 to 8 mph NE | 1% |
| Wednesday | 64°F | Sunny | 5 to 10 mph NE | 1% |
| Wednesday Night | 46°F | Mostly Clear | 2 to 6 mph NE | 1% |
| Thursday | 67°F | Mostly Sunny | 3 to 7 mph NE | 2% |
| Thursday Night | 47°F | Partly Cloudy | 1 to 5 mph NE | 2% |
| Friday | 70°F | Mostly Sunny | 2 to 6 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Eureka (44.012, -88.841). Updated through the day.
Growing snapshot for Eureka
Last spring frost
May 1
First fall frost
Oct 11
Growing season
163 days
Hardiness zone
5a
More local growing data for Eureka: nearby ZIP 54980 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Ripon 5 Ne, Wi (7 mi from Eureka). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.