Junction City, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Junction City, a city in Lane County, Oregon.
This Afternoon
59°F
Mostly Sunny
Mostly sunny. High near 59, with temperatures falling to around 54 in the afternoon. East northeast wind around 1 mph.
7-day forecast for Junction City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 59°F | Mostly Sunny | 1 mph ENE | 3% |
| Tonight | 36°F | Areas Of Fog | 0 to 3 mph S | 2% |
| Wednesday | 60°F | Patchy Frost then Chance Light Rain | 5 mph S | 49% |
| Wednesday Night | 44°F | Light Rain then Mostly Cloudy | 3 to 8 mph SSW | 87% |
| Thursday | 60°F | Mostly Sunny | 0 to 5 mph S | 8% |
| Thursday Night | 41°F | Patchy Fog then Slight Chance Light Rain | 0 to 5 mph E | 22% |
| Friday | 61°F | Slight Chance Light Rain | 1 to 5 mph S | 22% |
| Friday Night | 41°F | Mostly Cloudy | 2 mph SSE | 8% |
| Saturday | 65°F | Partly Sunny | 3 mph S | 12% |
| Saturday Night | 46°F | Light Rain Likely | 3 to 15 mph SSW | 65% |
| Sunday | 60°F | Light Rain Likely | 0 to 9 mph WSW | 65% |
| Sunday Night | 42°F | Patchy Fog then Slight Chance Light Rain | 2 mph NNE | 17% |
| Monday | 60°F | Chance Light Rain | 5 mph SSE | 36% |
| Monday Night | 43°F | Chance Light Rain | 2 to 7 mph S | 36% |
Forecast source: National Weather Service (api.weather.gov) for Junction City (44.212, -123.200). Updated through the day.
Growing snapshot for Junction City
Last spring frost
Apr 11
First fall frost
Oct 23
Growing season
196 days
Hardiness zone
8b
More local growing data for Junction City: nearby ZIP 97448 weather · frost dates · planting calendar · Oregon frost dates
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Climate data from the nearest NOAA station, Eugene Mahlon Sweet Ap, Or (6.4 mi from Junction City). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.