Fontana-on-Geneva Lake, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fontana-on-Geneva Lake, a village in Walworth County, Wisconsin.
Today
83°F
Mostly Sunny
Mostly sunny, with a high near 83. Southwest wind 5 to 10 mph.
7-day forecast for Fontana-on-Geneva Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Mostly Sunny | 5 to 10 mph SW | 4% |
| Tonight | 66°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 83% |
| Wednesday | 75°F | Showers And Thunderstorms | 0 to 5 mph W | 75% |
| Wednesday Night | 60°F | Showers And Thunderstorms Likely | 0 to 5 mph N | 61% |
| Thursday | 78°F | Chance Rain Showers then Partly Sunny | 0 to 5 mph NE | 35% |
| Thursday Night | 59°F | Partly Cloudy | 0 mph | 12% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph S | 3% |
| Friday Night | 62°F | Mostly Clear | 0 to 5 mph S | 6% |
| Saturday | 83°F | Mostly Sunny | 5 to 10 mph SW | 10% |
| Saturday Night | 67°F | Slight Chance Showers And Thunderstorms | 5 mph SW | 25% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 25% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 45% |
| Monday | 83°F | Chance Rain Showers | 5 mph S | 44% |
| Monday Night | 66°F | Chance Showers And Thunderstorms | 5 mph W | 45% |
Forecast source: National Weather Service (api.weather.gov) for Fontana-on-Geneva Lake (42.545, -88.566). Updated through the day.
Growing snapshot for Fontana-on-Geneva Lake
Last spring frost
Apr 25
First fall frost
Oct 21
Growing season
179 days
Hardiness zone
5b
More local growing data for Fontana-on-Geneva Lake: nearby ZIP 53125 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Allens Grove
Big Foot Prairie
Bloomfield
Como
Darien
Delavan
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East Troy
Elkhorn
Genoa City
Lake Geneva
Lake Ivanhoe
Lake Lorraine
Lauderdale Lakes
Lyons
Powers Lake
Sharon
Springfield
Turtle Lake
Walworth
Whitewater
Williams Bay
Climate data from the nearest NOAA station, Lake Geneva Wwtp, Wi (7.9 mi from Fontana-on-Geneva Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.