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Winchester, ID Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Winchester, a city in Nez Perce County, Idaho.

Overnight
48°F
Partly Cloudy
Partly cloudy. Low around 48, with temperatures rising to around 50 overnight. West wind around 3 mph.

7-day forecast for Winchester

WhenTempForecastWindPrecip
Overnight 48°F Partly Cloudy 3 mph W 2%
Saturday 68°F Sunny 3 to 7 mph NW 3%
Saturday Night 49°F Mostly Clear 5 mph SW 3%
Sunday 73°F Sunny 5 mph E 0%
Sunday Night 51°F Mostly Clear 2 to 6 mph SE 0%
Monday 75°F Sunny 6 mph S 0%
Monday Night 52°F Mostly Clear 2 to 6 mph SE 0%
Tuesday 74°F Sunny 6 mph NE 3%
Tuesday Night 50°F Mostly Clear 6 mph SE 3%
Wednesday 71°F Sunny 3 to 7 mph E 4%
Wednesday Night 47°F Partly Cloudy 2 to 7 mph SW 4%
Thursday 70°F Mostly Sunny 6 mph NE 3%
Thursday Night 47°F Partly Cloudy 6 mph W 6%
Friday 66°F Mostly Sunny 7 mph NW 14%

Forecast source: National Weather Service (api.weather.gov) for Winchester (46.241, -116.624). Updated through the day.

Growing snapshot for Winchester

Last spring frost
May 23
First fall frost
Sep 25
Growing season
121 days
Hardiness zone
7a

More local growing data for Winchester: nearby ZIP 83524 weather · frost dates · planting calendar · Idaho frost dates

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Climate data from the nearest NOAA station, Winchester, Id (7.9 mi from Winchester). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.