Eureka, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Eureka, a community in Winnebago County, Wisconsin.
Today
83°F
Partly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 2pm and 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then a chance of showers and thunderstorms. Partly sunny. High near 83, with temperatures falling to around 81 in the afternoon. Heat index values as high as 86. Southwest wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Eureka
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 10 to 14 mph SW | 39% |
| Tonight | 61°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 8 mph W | 56% |
| Wednesday | 78°F | Chance Showers And Thunderstorms then Partly Sunny | 5 mph WNW | 44% |
| Wednesday Night | 55°F | Mostly Cloudy | 0 to 3 mph WNW | 1% |
| Thursday | 81°F | Mostly Sunny | 0 to 5 mph SE | 0% |
| Thursday Night | 58°F | Mostly Clear | 3 mph S | 0% |
| Friday | 83°F | Sunny | 2 to 12 mph SSW | 3% |
| Friday Night | 63°F | Mostly Clear | 6 to 12 mph SSW | 12% |
| Saturday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 10 mph SW | 15% |
| Saturday Night | 66°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph SSW | 37% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 6 to 10 mph WSW | 37% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms | 5 to 9 mph WSW | 49% |
| Monday | 81°F | Chance Rain Showers | 3 to 8 mph SSW | 37% |
| Monday Night | 63°F | Chance Showers And Thunderstorms | 3 to 8 mph NNE | 41% |
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 Aug 4, 2026.