Weather for Heppner, Oregon
Current Weather
Five Day Weather Forecast
Thu
H: 87°F
L: 57°F
Fri
H: 91°F
L: 61°F
Sat
H: 83°F
L: 57°F
Sun
H: 76°F
L: 51°F
Mon
H: 77°F
L: 49°F
Air Quality
Nitrogen Dioxide: 2 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 140 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:28 PM
Daylight: 14 hrs 48 mins
Moon Transit: 1:40 AM
Moonset: 6:40 AM
Moon Phase: Full
Moon Illumination: 97.1%
Best Times for Fishing or Hunting
Major Periods
1:10 AM - 3:40 AM9:30 AM - 12:00 AM
Minor Periods
8:42 PM - 10:12 PM6:10 AM - 7:40 AM
Action Rating: 5 out of 5
Fire Weather Watch issued July 30 at 6:40AM PDT until August 1 at 11:00PM PDT by NWS Pendleton OR
Effective: Thu July 30, 2026, 6:40 AM
Expires: Thu July 30, 2026, 3:00 PM
...WINDY AND BREEZY WITH CRITICAL RELATIVE HUMIDITY SATURDAY... .Windy conditions will develop with overlapping low relative humidity values Saturday across the Columbia Basin and Eastern Wallowa County. * AFFECTED AREA...Fire Weather Zones 691 Lower Columbia Basin of Oregon, 691 Lower Columbia Basin of Washington, 693 Canyon Grasslands of Wallowa County and 693 Southeast Washington Grande Ronde Valley. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 20 to 30 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 23 percent. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.
A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
Fire Weather Watch issued July 30 at 10:54AM PDT until August 1 at 11:00PM PDT by NWS Pendleton OR
Effective: Thu July 30, 2026, 10:54 AM
Expires: Thu July 30, 2026, 11:00 PM
...WINDY AND BREEZY WITH CRITICAL RELATIVE HUMIDITY SATURDAY... .Windy conditions will develop with overlapping low relative humidity values Saturday across the Columbia Basin, Eastern Mountains, and Central Oregon. * AFFECTED AREA...Fire Weather Zones 691 Lower Columbia Basin of Oregon, 691 Lower Columbia Basin of Washington, 693 Canyon Grasslands of Wallowa County and 693 Southeast Washington Grande Ronde Valley. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 20 to 30 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 24 percent. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.
A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
Fire Weather Watch issued July 30 at 10:54AM PDT until August 1 at 11:00PM PDT by NWS Pendleton OR
Effective: Thu July 30, 2026, 10:54 AM
Expires: Thu July 30, 2026, 11:00 PM
...WINDY AND BREEZY WITH CRITICAL RELATIVE HUMIDITY SATURDAY... .Windy conditions will develop with overlapping low relative humidity values Saturday across the Columbia Basin, Eastern Mountains, and Central Oregon. The National Weather Service in Pendleton has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zones 692 Northern Blue Mountains of Oregon, 692 Blue Mountains of Washington, 694 Grande Ronde Valley of Oregon, 695 Eagle Cap Wilderness, 696 John Day Valley, 697 Central Blue Mountains, 698 Southern Blue Mountains, 699 Western Forested Blue Mountains and 700 Central Mountains of Oregon. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 17 percent. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.
A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.4 μg/m3
Sulphur Dioxide: 1.7 μg/m3
Ozone: 102.42 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:28 PM
Daylight: 14 hrs 48 mins
Moon Transit: 1:40 AM
Moonset: 6:40 AM
Moon Phase: Full
Moon Illumination: 97.1%
Best Times for Fishing or Hunting
Major Periods
1:10 AM - 3:40 AM9:30 AM - 12:00 AM
Minor Periods
8:42 PM - 10:12 PM6:10 AM - 7:40 AM
Action Rating: 5 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.88 μg/m3
Sulphur Dioxide: 1.53 μg/m3
Ozone: 109.25 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:27 PM
Daylight: 14 hrs 46 mins
Moon Transit: 2:24 AM
Moonset: 7:49 AM
Moon Phase: Full
Moon Illumination: 92.0%
Best Times for Fishing or Hunting
Major Periods
1:54 AM - 4:24 AM10:13 AM - 12:43 AM
Minor Periods
9:00 PM - 10:30 PM7:19 AM - 8:49 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.87 μg/m3
Sulphur Dioxide: 1.21 μg/m3
Ozone: 81.88 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:26 PM
Daylight: 14 hrs 43 mins
Moon Transit: 3:08 AM
Moonset: 8:58 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%
Best Times for Fishing or Hunting
Major Periods
2:38 AM - 5:08 AM10:56 AM - 1:26 PM
Minor Periods
9:18 PM - 10:48 PM8:28 AM - 9:58 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.98 μg/m3
Sulphur Dioxide: 1.09 μg/m3
Ozone: 67.67 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:24 PM
Daylight: 14 hrs 41 mins
Moon Transit: 3:50 AM
Moonset: 10:07 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%
Best Times for Fishing or Hunting
Major Periods
3:20 AM - 5:50 AM3:20 PM - 5:50 PM
Minor Periods
9:35 PM - 11:05 PM9:37 AM - 11:07 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.57 μg/m3
Sulphur Dioxide: 0.91 μg/m3
Ozone: 68.71 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:23 PM
Daylight: 14 hrs 38 mins
Moon Transit: 12:00 AM
Moonset: 11:18 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:00 AM - 12:00 AM
Minor Periods
9:54 PM - 11:24 PM10:48 AM - 12:18 AM
Action Rating: 2 out of 5