Harman US

Johnson, AR Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Johnson, a city in Washington County, Arkansas.

Tonight
45°F
Patchy Drizzle then Mostly Cloudy
Patchy drizzle before 9pm. Mostly cloudy, with a low around 45. West wind 5 to 10 mph, with gusts as high as 20 mph.

7-day forecast for Johnson

WhenTempForecastWindPrecip
Tonight 45°F Patchy Drizzle then Mostly Cloudy 5 to 10 mph W 14%
Wednesday 64°F Mostly Sunny 5 to 10 mph W 0%
Wednesday Night 40°F Mostly Clear 0 to 5 mph SW 0%
Thursday 66°F Mostly Sunny then Chance Rain Showers 0 to 5 mph SW 31%
Thursday Night 40°F Chance Rain Showers then Mostly Cloudy 0 to 5 mph N 27%
Friday 59°F Mostly Sunny 0 to 10 mph N 0%
Friday Night 37°F Partly Cloudy 0 to 5 mph N 0%
Saturday 59°F Partly Sunny 0 to 5 mph N 0%
Saturday Night 36°F Mostly Clear 0 mph 5%
Sunday 63°F Sunny 0 to 5 mph W 7%
Sunday Night 36°F Mostly Clear 0 to 5 mph SW 1%
Monday 66°F Sunny 0 to 10 mph SW 0%
Monday Night 40°F Mostly Clear 0 to 5 mph SW 0%
Tuesday 70°F Sunny 0 to 5 mph SW 1%

Forecast source: National Weather Service (api.weather.gov) for Johnson (36.134, -94.174). Updated through the day.

Growing snapshot for Johnson

Last spring frost
Apr 4
First fall frost
Oct 31
Growing season
209 days
Hardiness zone
7a

More local growing data for Johnson: nearby ZIP 72762 weather · frost dates · planting calendar · Arkansas frost dates

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Climate data from the nearest NOAA station, Fayetteville Exp Stn, Ar (6.2 mi from Johnson). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.