Island City, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Island City, a city in Union County, Oregon.
Overnight
29°F
Patchy Freezing Fog
Patchy freezing fog after 4am. Mostly clear, with a low around 29. Northwest wind around 3 mph.
7-day forecast for Island City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 29°F | Patchy Freezing Fog | 3 mph NW | 0% |
| Wednesday | 57°F | Patchy Freezing Fog then Sunny | 2 mph NW | 1% |
| Wednesday Night | 33°F | Mostly Cloudy then Slight Chance Rain Showers | 3 mph SW | 55% |
| Thursday | 54°F | Rain Showers Likely then Partly Sunny | 2 mph W | 55% |
| Thursday Night | 29°F | Partly Cloudy | 1 to 14 mph W | 0% |
| Friday | 56°F | Partly Sunny | 8 to 16 mph S | 2% |
| Friday Night | 35°F | Mostly Cloudy | 8 to 21 mph S | 2% |
| Saturday | 60°F | Mostly Sunny | 18 to 25 mph SE | 0% |
| Saturday Night | 39°F | Mostly Cloudy | 21 to 30 mph S | 12% |
| Sunday | 58°F | Partly Sunny | 2 to 25 mph SW | 12% |
| Sunday Night | 34°F | Mostly Cloudy | 2 to 7 mph SW | 6% |
| Monday | 58°F | Partly Sunny | 2 to 7 mph SE | 6% |
| Monday Night | 35°F | Mostly Cloudy | 2 to 9 mph S | 13% |
| Tuesday | 58°F | Slight Chance Rain Showers | 6 to 9 mph S | 17% |
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 Nov 4, 2026.