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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

WhenTempForecastWindPrecip
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

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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.