Argonne, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Argonne, a community in Forest County, Wisconsin.
Overnight
49°F
Slight Chance Rain Showers
A slight chance of rain showers. Cloudy, with a low around 49. East wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Argonne
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 49°F | Slight Chance Rain Showers | 5 mph E | 21% |
| Saturday | 59°F | Chance Rain Showers | 7 mph E | 43% |
| Saturday Night | 46°F | Chance Rain Showers then Mostly Cloudy | 5 mph NE | 32% |
| Sunday | 62°F | Partly Sunny | 6 to 10 mph NNE | 2% |
| Sunday Night | 37°F | Mostly Cloudy | 3 to 8 mph NE | 0% |
| Monday | 59°F | Partly Sunny | 7 mph ENE | 0% |
| Monday Night | 34°F | Partly Cloudy then Patchy Frost | 5 mph ENE | 0% |
| Tuesday | 62°F | Patchy Frost then Sunny | 2 to 7 mph ENE | 0% |
| Tuesday Night | 35°F | Mostly Clear then Patchy Fog | 5 mph E | 1% |
| Wednesday | 64°F | Patchy Frost then Sunny | 1 to 6 mph E | 1% |
| Wednesday Night | 39°F | Patchy Fog | 0 to 3 mph ENE | 1% |
| Thursday | 66°F | Patchy Fog then Mostly Sunny | 0 to 3 mph ENE | 2% |
| Thursday Night | 40°F | Mostly Clear | 2 mph ENE | 2% |
| Friday | 69°F | Mostly Sunny | 0 to 3 mph ESE | 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 Sep 19, 2026.