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.
Overnight
58°F
Chance Light Rain
A chance of rain. Cloudy, with a low around 58. South wind around 15 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Fontana-on-Geneva Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Chance Light Rain | 15 mph S | 39% |
| Wednesday | 61°F | Chance Light Rain | 10 to 15 mph SW | 30% |
| Wednesday Night | 44°F | Slight Chance Light Rain then Cloudy | 15 mph SW | 17% |
| Thursday | 54°F | Chance Light Rain | 10 to 15 mph W | 50% |
| Thursday Night | 38°F | Chance Light Rain then Mostly Cloudy | 10 mph NW | 44% |
| Friday | 48°F | Partly Sunny | 5 to 10 mph N | 9% |
| Friday Night | 31°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 50°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 33°F | Mostly Clear | 0 to 5 mph W | 1% |
| Sunday | 55°F | Sunny | 5 to 10 mph W | 7% |
| Sunday Night | 35°F | Mostly Clear | 0 to 5 mph W | 0% |
| Monday | 59°F | Mostly Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 60°F | Sunny | 5 mph NW | 1% |
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
Delavan Lake
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 Nov 4, 2026.