Jefferson, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jefferson, a city in Marion County, Oregon.
Overnight
59°F
Areas Of Smoke
Areas of smoke. Clear, with a low around 59. North wind around 6 mph.
7-day forecast for Jefferson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 59°F | Areas Of Smoke | 6 mph N | 0% |
| Tuesday | 95°F | Areas Of Smoke | 6 to 12 mph N | 0% |
| Tuesday Night | 61°F | Smoke | 1 to 12 mph NNW | 0% |
| Wednesday | 98°F | Smoke | 1 to 5 mph NNW | 0% |
| Wednesday Night | 61°F | Clear | 0 to 5 mph W | 0% |
| Thursday | 98°F | Sunny | 0 to 6 mph NW | 0% |
| Thursday Night | 58°F | Clear | 1 to 6 mph WNW | 0% |
| Friday | 93°F | Sunny | 1 to 9 mph NNW | 0% |
| Friday Night | 60°F | Clear | 3 to 9 mph N | 0% |
| Saturday | 89°F | Sunny | 3 to 10 mph N | 0% |
| Saturday Night | 56°F | Mostly Clear | 5 to 10 mph NNW | 0% |
| Sunday | 83°F | Sunny | 5 to 10 mph N | 0% |
| Sunday Night | 54°F | Mostly Clear | 5 to 10 mph NNW | 0% |
| Monday | 82°F | Sunny | 5 to 9 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov) for Jefferson (44.717, -123.006). Updated through the day.
Growing snapshot for Jefferson
Last spring frost
Mar 29
First fall frost
Nov 6
Growing season
222 days
Hardiness zone
8b
More local growing data for Jefferson: nearby ZIP 97352 weather · frost dates · planting calendar · Oregon frost dates
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Climate data from the nearest NOAA station, Stayton, Or (10.8 mi from Jefferson). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.