Jefferson, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jefferson, a city in Marion County, Oregon.
This Afternoon
58°F
Partly Sunny
Partly sunny. High near 58, with temperatures falling to around 54 in the afternoon. North northwest wind around 2 mph.
7-day forecast for Jefferson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 58°F | Partly Sunny | 2 mph NNW | 4% |
| Tonight | 37°F | Areas Of Fog | 1 mph ESE | 3% |
| Wednesday | 57°F | Areas Of Fog then Chance Light Rain | 0 to 5 mph S | 41% |
| Wednesday Night | 46°F | Light Rain then Mostly Cloudy | 3 to 8 mph S | 88% |
| Thursday | 59°F | Partly Sunny | 0 to 5 mph S | 10% |
| Thursday Night | 43°F | Patchy Fog then Chance Light Rain | 0 to 3 mph SE | 30% |
| Friday | 58°F | Chance Light Rain | 1 to 5 mph S | 30% |
| Friday Night | 43°F | Slight Chance Light Rain then Patchy Fog | 2 mph SSE | 15% |
| Saturday | 62°F | Areas Of Fog then Slight Chance Light Rain | 2 mph S | 15% |
| Saturday Night | 49°F | Light Rain Likely | 2 to 14 mph S | 67% |
| Sunday | 59°F | Light Rain Likely | 0 to 9 mph SW | 67% |
| Sunday Night | 44°F | Areas Of Fog | 1 mph NNE | 17% |
| Monday | 58°F | Chance Light Rain | 3 mph SSE | 40% |
| Monday Night | 46°F | Chance Light Rain | 2 to 7 mph S | 40% |
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 Nov 3, 2026.