Helix, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Helix, a city in Umatilla County, Oregon.
Overnight
48°F
Areas Of Smoke
Areas of smoke. Clear, with a low around 48. East wind around 3 mph.
7-day forecast for Helix
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 48°F | Areas Of Smoke | 3 mph E | 0% |
| Tuesday | 86°F | Areas Of Smoke | 2 to 12 mph N | 0% |
| Tuesday Night | 52°F | Areas Of Smoke | 5 to 8 mph E | 0% |
| Wednesday | 92°F | Areas Of Smoke | 3 to 7 mph N | 0% |
| Wednesday Night | 56°F | Areas Of Smoke then Clear | 7 mph E | 0% |
| Thursday | 96°F | Sunny | 5 to 8 mph SW | 0% |
| Thursday Night | 60°F | Clear | 5 to 9 mph SW | 0% |
| Friday | 94°F | Sunny | 8 to 17 mph SW | 0% |
| Friday Night | 59°F | Clear | 7 to 14 mph SW | 0% |
| Saturday | 90°F | Sunny | 7 to 14 mph SW | 0% |
| Saturday Night | 57°F | Clear | 8 to 14 mph SW | 0% |
| Sunday | 85°F | Sunny | 8 to 15 mph SW | 0% |
| Sunday Night | 54°F | Mostly Clear | 7 to 12 mph SW | 0% |
| Monday | 84°F | Sunny | 7 to 12 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Helix (45.851, -118.659). Updated through the day.
Growing snapshot for Helix
Last spring frost
May 12
First fall frost
Sep 27
Growing season
135 days
Hardiness zone
7a
More local growing data for Helix: nearby ZIP 97835 weather · frost dates · planting calendar · Oregon frost dates
Nearby towns & communities
Adams
Athena
Cayuse
Echo
Gopher Flats
Green Meadows
Hermiston
Kirkpatrick
McKay
Meacham
Milton-Freewater
Mission
Pendleton
Pilot Rock
Riverside
Stanfield
Tutuilla
Ukiah
Umapine
Umatilla
Weston
Climate data from the nearest NOAA station, Pendleton Branch Exp Stn, Or (14.2 mi from Helix). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.