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Amherst Junction, WI Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Amherst Junction, a village in Portage County, Wisconsin.

Today
61°F
Rain Showers Likely
Rain showers likely and patchy fog. Mostly cloudy. High near 61, with temperatures falling to around 55 in the afternoon. South wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Amherst Junction

WhenTempForecastWindPrecip
Today 61°F Rain Showers Likely 9 to 13 mph S 61%
Tonight 43°F Rain Showers 6 to 10 mph SW 83%
Thursday 50°F Rain Showers Likely 5 to 14 mph NW 65%
Thursday Night 32°F Mostly Cloudy 8 to 13 mph N 4%
Friday 45°F Partly Sunny 3 to 12 mph N 1%
Friday Night 25°F Mostly Clear 2 mph N 0%
Saturday 48°F Sunny 0 to 6 mph WNW 0%
Saturday Night 30°F Mostly Clear 3 to 7 mph W 4%
Sunday 52°F Sunny 8 to 12 mph W 8%
Sunday Night 31°F Mostly Clear 2 to 7 mph W 1%
Monday 57°F Mostly Sunny 2 to 10 mph WSW 0%
Monday Night 36°F Partly Cloudy 8 mph W 1%
Tuesday 56°F Sunny 5 to 9 mph WNW 3%
Tuesday Night 33°F Partly Cloudy 0 to 3 mph NW 2%

Forecast source: National Weather Service (api.weather.gov) for Amherst Junction (44.469, -89.317). Updated through the day.

Growing snapshot for Amherst Junction

Last spring frost
May 4
First fall frost
Oct 7
Growing season
155 days
Hardiness zone
5a

More local growing data for Amherst Junction: nearby ZIP 54458 weather · frost dates · planting calendar · Wisconsin frost dates

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Climate data from the nearest NOAA station, Stevens Pt, Wi (13.8 mi from Amherst Junction). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.