Eureka, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Eureka, a community in Winnebago County, Wisconsin.
Tonight
58°F
Rain Showers
Rain showers likely before 8pm, then rain showers and patchy fog. Cloudy. Low around 58, with temperatures rising to around 60 overnight. South southeast wind around 12 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Eureka
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Rain Showers | 12 mph SSE | 93% |
| Wednesday | 64°F | Rain Showers | 10 to 15 mph S | 88% |
| Wednesday Night | 46°F | Rain Showers Likely | 13 mph SW | 65% |
| Thursday | 54°F | Rain Showers | 12 mph WNW | 86% |
| Thursday Night | 37°F | Chance Rain Showers then Mostly Cloudy | 13 mph N | 37% |
| Friday | 48°F | Slight Chance Rain Showers then Partly Sunny | 7 to 14 mph N | 16% |
| Friday Night | 30°F | Partly Cloudy | 3 mph NNW | 2% |
| Saturday | 51°F | Mostly Sunny | 1 to 6 mph W | 1% |
| Saturday Night | 33°F | Partly Cloudy | 2 to 6 mph WSW | 10% |
| Sunday | 57°F | Slight Chance Rain Showers | 6 to 10 mph W | 15% |
| Sunday Night | 34°F | Mostly Clear | 6 mph W | 3% |
| Monday | 58°F | Mostly Sunny | 5 to 13 mph SW | 1% |
| Monday Night | 38°F | Partly Cloudy | 8 mph W | 0% |
| Tuesday | 58°F | Sunny | 9 mph WNW | 1% |
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 Nov 4, 2026.