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Altamont, OR Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Altamont, a community in Klamath County, Oregon.

Tonight
41°F
Clear
Clear. Low around 41, with temperatures rising to around 44 overnight. Northeast wind around 1 mph.

7-day forecast for Altamont

WhenTempForecastWindPrecip
Tonight 41°F Clear 1 mph NE 0%
Saturday 77°F Sunny 0 to 5 mph SSE 0%
Saturday Night 41°F Mostly Clear 0 to 5 mph N 0%
Sunday 80°F Sunny 1 to 5 mph N 0%
Sunday Night 44°F Partly Cloudy 0 to 5 mph NW 0%
Monday 82°F Sunny 0 to 5 mph NW 0%
Monday Night 44°F Mostly Clear 0 to 5 mph NNW 0%
Tuesday 81°F Sunny 0 to 8 mph WSW 0%
Tuesday Night 42°F Mostly Clear 0 to 8 mph NW 0%
Wednesday 80°F Sunny 0 to 7 mph W 0%
Wednesday Night 41°F Mostly Clear 0 to 7 mph NW 0%
Thursday 79°F Sunny 0 to 8 mph WSW 0%
Thursday Night 41°F Partly Cloudy 0 to 8 mph NW 1%
Friday 74°F Mostly Sunny 0 to 10 mph WNW 3%

Forecast source: National Weather Service (api.weather.gov) for Altamont (42.198, -121.725). Updated through the day.

Growing snapshot for Altamont

Last spring frost
Jun 9
First fall frost
Sep 18
Growing season
99 days
Hardiness zone
6b

More local growing data for Altamont: nearby ZIP 97603 weather · frost dates · planting calendar · Oregon frost dates

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Climate data from the nearest NOAA station, Klamath Falls Intl Ap, Or (3.2 mi from Altamont). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.