Island City, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Island City, a city in Union County, Oregon.
This Afternoon
74°F
Sunny
Sunny. High near 74, with temperatures falling to around 72 in the afternoon. Northwest wind 3 to 9 mph.
7-day forecast for Island City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Sunny | 3 to 9 mph NW | 5% |
| Tonight | 45°F | Mostly Clear | 3 to 7 mph NW | 4% |
| Saturday | 79°F | Sunny | 1 to 6 mph NW | 1% |
| Saturday Night | 47°F | Mostly Clear | 0 to 6 mph W | 0% |
| Sunday | 82°F | Sunny | 2 mph SE | 0% |
| Sunday Night | 50°F | Mostly Clear | 1 to 5 mph NE | 0% |
| Monday | 84°F | Sunny | 1 to 6 mph NW | 0% |
| Monday Night | 50°F | Mostly Clear | 3 mph W | 0% |
| Tuesday | 82°F | Sunny | 1 to 6 mph NW | 0% |
| Tuesday Night | 48°F | Partly Cloudy | 6 mph W | 1% |
| Wednesday | 79°F | Sunny | 1 to 5 mph NW | 1% |
| Wednesday Night | 48°F | Partly Cloudy | 2 to 8 mph W | 1% |
| Thursday | 83°F | Sunny | 8 to 16 mph S | 1% |
| Thursday Night | 50°F | Partly Cloudy | 8 to 14 mph S | 4% |
Forecast source: National Weather Service (api.weather.gov) for Island City (45.336, -118.049). Updated through the day.
Growing snapshot for Island City
Last spring frost
May 6
First fall frost
Oct 1
Growing season
146 days
Hardiness zone
6b
More local growing data for Island City: nearby ZIP 97850 weather · frost dates · planting calendar · Oregon frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, La Grande, Or (4 mi from Island City). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.