Island City, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Island City, a city in Union County, Oregon.
Today
56°F
Slight Chance Rain Showers
A slight chance of rain showers before 1pm. Mostly cloudy. High near 56, with temperatures falling to around 50 in the afternoon. Southeast wind 2 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
7-day forecast for Island City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 56°F | Slight Chance Rain Showers | 2 to 15 mph SE | 15% |
| Tonight | 29°F | Patchy Fog | 5 mph NW | 1% |
| Wednesday | 57°F | Patchy Freezing Fog then Sunny | 2 mph NW | 0% |
| Wednesday Night | 34°F | Patchy Fog | 3 mph SW | 46% |
| Thursday | 54°F | Chance Rain Showers then Partly Sunny | 2 mph W | 46% |
| Thursday Night | 31°F | Partly Cloudy | 1 to 18 mph SW | 6% |
| Friday | 55°F | Partly Sunny | 8 to 18 mph S | 11% |
| Friday Night | 36°F | Mostly Cloudy | 8 to 22 mph S | 7% |
| Saturday | 61°F | Mostly Sunny | 18 to 24 mph S | 1% |
| Saturday Night | 40°F | Mostly Cloudy | 21 to 29 mph S | 10% |
| Sunday | 59°F | Partly Sunny | 2 to 26 mph S | 12% |
| Sunday Night | 36°F | Mostly Cloudy | 2 to 8 mph SW | 11% |
| Monday | 60°F | Partly Sunny | 2 to 8 mph S | 14% |
| Monday Night | 37°F | Mostly Cloudy then Slight Chance Rain Showers | 2 to 10 mph S | 16% |
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 3, 2026.