Harman US

Armstrong, OK Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Armstrong, a town in Bryan County, Oklahoma.

Tonight
49°F
Mostly Clear
Mostly clear, with a low around 49. Northwest wind 2 to 7 mph.

7-day forecast for Armstrong

WhenTempForecastWindPrecip
Tonight 49°F Mostly Clear 2 to 7 mph NW 1%
Wednesday 72°F Sunny 5 mph WNW 0%
Wednesday Night 48°F Partly Cloudy 1 mph SW 0%
Thursday 76°F Mostly Sunny 1 to 7 mph SSW 1%
Thursday Night 47°F Partly Cloudy 7 mph N 5%
Friday 69°F Sunny 6 to 9 mph N 0%
Friday Night 43°F Partly Cloudy 1 to 5 mph N 0%
Saturday 68°F Mostly Sunny 5 mph N 1%
Saturday Night 43°F Partly Cloudy 2 mph N 5%
Sunday 70°F Sunny 1 to 5 mph NW 2%
Sunday Night 42°F Clear 2 mph NW 1%
Monday 73°F Sunny 0 to 6 mph SW 1%
Monday Night 45°F Mostly Clear 3 mph S 1%
Tuesday 76°F Sunny 1 to 7 mph S 0%

Forecast source: National Weather Service (api.weather.gov) for Armstrong (34.053, -96.345). Updated through the day.

Growing snapshot for Armstrong

Last spring frost
Mar 31
First fall frost
Nov 5
Growing season
221 days
Hardiness zone
8a

More local growing data for Armstrong: nearby ZIP 74701 weather · frost dates · planting calendar · Oklahoma frost dates

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Climate data from the nearest NOAA station, Durant, Ok (0.9 mi from Armstrong). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.