Weather for Hillsboro, Oregon
Current Weather
Humidity: 82%
Feels Like: 41.8°F
Wind: NE 4.3 mph
Wind Gusts: 8.7 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast
Mon
H: 63°F
L: 39°F
Tue
H: 68°F
L: 41°F
Wed
H: 69°F
L: 44°F
Thu
H: 52°F
L: 41°F
Fri
H: 65°F
L: 49°F
Air Quality
Nitrogen Dioxide: 13.55 μg/m3
Sulphur Dioxide: 2.55 μg/m3
Ozone: 31 μg/m3
Astronomical
Sun Transit: 12:58 AM
Sunset: 6:29 PM
Daylight: 11 hrs 3 mins
Moon Transit: 7:04 AM
Moonset: 3:20 PM
Moon Phase: Last Quarter
Moon Illumination: 51.1%
Best Times for Fishing or Hunting
Major Periods
6:34 AM - 9:04 AM2:28 PM - 4:58 PM
Minor Periods
12:00 AM - 12:00 AM2:50 PM - 4:20 PM
Action Rating: 2 out of 5
Frost Advisory issued October 13 at 1:51AM PDT until October 14 at 9:00AM PDT by NWS Portland OR
Effective: Mon October 13, 2025, 1:51 AM
Expires: Mon October 13, 2025, 4:00 PM
* WHAT...Temperatures as low as 33 to 36 will result in frost formation. * WHERE...In Oregon, North Oregon Coast Range Lowlands, Lane County Cascade Foothills, Lane County Lowlands, and Linn County Lowlands. In Washington, Cowlitz County Lowlands and South Washington Cascade Foothills. * WHEN...From midnight tonight to 9 AM PDT Tuesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Take steps now to protect tender outdoor plants from the cold. Consider temporarily moving outdoor potted plants indoors if they are sensitive to cold temperatures. Consider temporarily covering sensitive plants with a lightweight cotton fabric (i.e., bedsheets, thin blankets), as this will help retain heat and provide frost protection for your plants.
Frost Advisory issued October 13 at 1:35PM PDT until October 14 at 9:00AM PDT by NWS Portland OR
Effective: Mon October 13, 2025, 1:35 PM
Expires: Tue October 14, 2025, 1:45 AM
* WHAT...Temperatures as low as 33 to 37 will result in frost formation. * WHERE...In Oregon, North Oregon Coast Range Lowlands, Lane County Cascade Foothills, Lane County Lowlands, and Linn County Lowlands. In Washington, Cowlitz County Lowlands and South Washington Cascade Foothills. * WHEN...From midnight tonight to 9 AM PDT Tuesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Take steps now to protect tender outdoor plants from the cold. Consider temporarily moving outdoor potted plants indoors if they are sensitive to cold temperatures. Consider temporarily covering sensitive plants with a lightweight cotton fabric (i.e., bedsheets, thin blankets), as this will help retain heat and provide frost protection for your plants.
Frost Advisory issued October 13 at 1:35PM PDT until October 14 at 9:00AM PDT by NWS Portland OR
Effective: Mon October 13, 2025, 1:35 PM
Expires: Tue October 14, 2025, 1:45 AM
* WHAT...Temperatures as low as 33 to 37 will result in frost formation. * WHERE...In Oregon, Lower Columbia River, Tualatin Valley, Benton County Lowlands, and Cascade Foothills of Marion and Linn Counties. In Washington, Inner Vancouver Metro and North Clark County Lowlands. * WHEN...From midnight tonight to 9 AM PDT Tuesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Take steps now to protect tender outdoor plants from the cold. Consider temporarily moving outdoor potted plants indoors if they are sensitive to cold temperatures. Consider temporarily covering sensitive plants with a lightweight cotton fabric (i.e., bedsheets, thin blankets), as this will help retain heat and provide frost protection for your plants.
Weather Forecast
Average Temperature: 50.3°F
Average Humidity: 70%
Wind: 12.1 mph
UV Index: 0.6
Air Quality
Nitrogen Dioxide: 17.54 μg/m3
Sulphur Dioxide: 3.59 μg/m3
Ozone: 41.2 μg/m3
Astronomical
Sun Transit: 12:58 AM
Sunset: 6:29 PM
Daylight: 11 hrs 3 mins
Moon Transit: 7:04 AM
Moonset: 3:20 PM
Moon Phase: Last Quarter
Moon Illumination: 51.1%
Best Times for Fishing or Hunting
Major Periods
6:34 AM - 9:04 AM2:28 PM - 4:58 PM
Minor Periods
12:00 AM - 12:00 AM2:50 PM - 4:20 PM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 53°F
Average Humidity: 53%
Wind: 8.1 mph
UV Index: 0.7
Air Quality
Nitrogen Dioxide: 12.25 μg/m3
Sulphur Dioxide: 2.67 μg/m3
Ozone: 45 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 6:28 PM
Daylight: 11 hrs mins
Moon Transit: 8:00 AM
Moonset: 3:53 PM
Moon Phase: Last Quarter
Moon Illumination: 39.8%
Best Times for Fishing or Hunting
Major Periods
7:30 AM - 10:00 AM3:23 PM - 5:53 PM
Minor Periods
3:23 PM - 4:53 PM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 55.3°F
Average Humidity: 49%
Wind: 3.4 mph
UV Index: 0.7
Air Quality
Nitrogen Dioxide: 21.48 μg/m3
Sulphur Dioxide: 3.63 μg/m3
Ozone: 34.68 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 6:26 PM
Daylight: 10 hrs 57 mins
Moon Transit: 8:51 AM
Moonset: 4:18 PM
Moon Phase: Last Quarter
Moon Illumination: 29.1%
Best Times for Fishing or Hunting
Major Periods
8:21 AM - 10:51 AM4:12 PM - 6:42 PM
Minor Periods
3:48 PM - 5:18 PM12:39 AM - 2:09 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 47.9°F
Average Humidity: 81%
Wind: 2.7 mph
UV Index: 0.7
Air Quality
Nitrogen Dioxide: 25.34 μg/m3
Sulphur Dioxide: 3.09 μg/m3
Ozone: 25.08 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 6:24 PM
Daylight: 10 hrs 54 mins
Moon Transit: 9:38 AM
Moonset: 4:39 PM
Moon Phase: Last Quarter
Moon Illumination: 19.4%
Best Times for Fishing or Hunting
Major Periods
4:58 PM - 7:28 PM9:08 AM - 11:38 AM
Minor Periods
4:09 PM - 5:39 PM1:53 AM - 3:23 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 55.5°F
Average Humidity: 68%
Wind: 5.1 mph
UV Index: 0.7
Air Quality
Nitrogen Dioxide: 27.8 μg/m3
Sulphur Dioxide: 3.07 μg/m3
Ozone: 27.15 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 6:22 PM
Daylight: 10 hrs 51 mins
Moon Transit: 10:21 AM
Moonset: 4:56 PM
Moon Phase: Waning Crescent
Moon Illumination: 11.3%
Best Times for Fishing or Hunting
Major Periods
5:40 PM - 8:10 PM9:51 AM - 12:21 AM
Minor Periods
4:26 PM - 5:56 PM3:03 AM - 4:33 AM
Action Rating: 3 out of 5