Argonne, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Argonne, a community in Forest County, Wisconsin.
Overnight
62°F
Mostly Cloudy
Mostly cloudy, with a low around 62. Southwest wind around 8 mph, with gusts as high as 20 mph.
7-day forecast for Argonne
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Mostly Cloudy | 8 mph SW | 0% |
| Tuesday | 75°F | Chance Rain Showers | 3 to 10 mph WSW | 33% |
| Tuesday Night | 52°F | Mostly Cloudy | 3 mph NNW | 12% |
| Wednesday | 74°F | Patchy Fog then Mostly Sunny | 3 mph NW | 1% |
| Wednesday Night | 51°F | Partly Cloudy then Patchy Fog | 2 mph SSE | 2% |
| Thursday | 79°F | Patchy Fog then Sunny | 1 to 6 mph SW | 1% |
| Thursday Night | 58°F | Mostly Clear | 5 mph SW | 1% |
| Friday | 83°F | Sunny | 5 to 9 mph SW | 11% |
| Friday Night | 60°F | Chance Showers And Thunderstorms | 7 mph SW | 30% |
| Saturday | 80°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 7 mph WSW | 24% |
| Saturday Night | 59°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 1 to 5 mph WSW | 47% |
| Sunday | 80°F | Chance Showers And Thunderstorms | 2 to 7 mph W | 47% |
| Sunday Night | 56°F | Chance Showers And Thunderstorms | 1 to 6 mph NW | 30% |
| Monday | 77°F | Patchy Fog then Chance Showers And Thunderstorms | 1 to 5 mph NW | 27% |
Forecast source: National Weather Service (api.weather.gov) for Argonne (45.658, -88.878). Updated through the day.
Growing snapshot for Argonne
Last spring frost
May 19
First fall frost
Sep 29
Growing season
131 days
Hardiness zone
4b
More local growing data for Argonne: nearby ZIP 54511 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Laona 6 Sw, Wi (15.9 mi from Argonne). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.