Johnson City, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Johnson City, a city in Clackamas County, Oregon.
Overnight
59°F
Areas Of Smoke
Areas of smoke. Clear, with a low around 59. North wind around 5 mph.
7-day forecast for Johnson City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 59°F | Areas Of Smoke | 5 mph N | 0% |
| Tuesday | 98°F | Areas Of Smoke | 6 to 9 mph NNE | 0% |
| Tuesday Night | 63°F | Smoke | 3 to 9 mph N | 0% |
| Wednesday | 100°F | Areas Of Smoke | 6 mph N | 0% |
| Wednesday Night | 66°F | Clear | 1 to 6 mph N | 0% |
| Thursday | 100°F | Sunny | 1 to 5 mph NNW | 0% |
| Thursday Night | 64°F | Clear | 1 to 6 mph NNW | 0% |
| Friday | 94°F | Sunny | 1 to 7 mph N | 0% |
| Friday Night | 62°F | Mostly Clear | 2 to 7 mph N | 0% |
| Saturday | 90°F | Sunny | 2 to 9 mph N | 0% |
| Saturday Night | 59°F | Mostly Clear | 2 to 9 mph NNW | 0% |
| Sunday | 83°F | Sunny | 2 to 8 mph NNW | 0% |
| Sunday Night | 57°F | Mostly Clear | 1 to 8 mph NNW | 0% |
| Monday | 83°F | Sunny | 1 to 7 mph NNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Johnson City (45.404, -122.578). Updated through the day.
Growing snapshot for Johnson City
Last spring frost
Mar 18
First fall frost
Nov 18
Growing season
244 days
Hardiness zone
9a
More local growing data for Johnson City: nearby ZIP 97027 weather · frost dates · planting calendar · Oregon frost dates
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Climate data from the nearest NOAA station, Oregon City, Or (2.1 mi from Johnson City). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.