Argonne, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Argonne, a community in Forest County, Wisconsin.
This Afternoon
65°F
Areas Of Fog
Areas of fog and a chance of rain showers. Cloudy, with a high near 65. South wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Argonne
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Areas Of Fog | 8 mph S | 39% |
| Tonight | 57°F | Rain Showers | 7 mph SSE | 94% |
| Wednesday | 61°F | Rain Showers | 9 mph SSE | 91% |
| Wednesday Night | 43°F | Rain Showers | 7 mph SW | 91% |
| Thursday | 47°F | Rain Showers | 6 to 13 mph NNW | 97% |
| Thursday Night | 30°F | Slight Chance Rain Showers then Cloudy | 10 to 14 mph N | 21% |
| Friday | 42°F | Partly Sunny | 5 to 10 mph NNE | 5% |
| Friday Night | 25°F | Partly Cloudy | 2 mph N | 2% |
| Saturday | 46°F | Mostly Sunny | 0 to 5 mph W | 0% |
| Saturday Night | 29°F | Partly Cloudy | 5 mph W | 13% |
| Sunday | 52°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 9 mph WNW | 15% |
| Sunday Night | 31°F | Partly Cloudy | 6 mph W | 5% |
| Monday | 52°F | Mostly Sunny | 5 to 10 mph WSW | 2% |
| Monday Night | 35°F | Partly Cloudy | 8 mph W | 2% |
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 Nov 4, 2026.