Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

Portland-Hillsboro Airport (KHIO)

Lat: 45.54765°NLon: 122.95568°WElev: 194.0ft.

Overcast

51°F

11°C

Humidity 92%
Wind Speed N 3 MPH
Barometer 29.64 in (1003.73 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 12 Apr 02:24 AM PDT
Extended Forecast for

Hillsboro OR

  • Overnight

    Overnight: A slight chance of showers between 4am and 5am.  Mostly cloudy, with a low around 48. Calm wind.  Chance of precipitation is 20%.

    Low: 48 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after 4pm.  Patchy fog before 7am.  Otherwise, mostly cloudy, with a high near 61. Calm wind becoming west southwest around 6 mph in the afternoon.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 61 °F

    Chance
    Showers and
    Patchy Fog
    then Showers
    Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of showers, mainly before 2am.  Mostly cloudy, with a low around 46. West northwest wind around 5 mph becoming calm  in the evening.

    Low: 46 °F

    Chance
    Showers

  • Monday

    Monday: A 50 percent chance of showers, mainly after 11am.  Mostly cloudy, with a high near 59. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 59 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 41. West wind around 6 mph becoming calm  in the evening.

    Low: 41 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Rain, mainly after 11am.  High near 54. Chance of precipitation is 90%.

    High: 54 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain.  Low around 39. Chance of precipitation is 100%.

    Low: 39 °F

    Rain

  • Wednesday

    Wednesday: Rain likely, then showers and possibly a thunderstorm after 11am.  Snow level 2100 feet. Mostly cloudy, with a high near 54.

    High: 54 °F

    Showers

  • Wednesday Night

    Wednesday Night: A chance of rain, mainly before 11pm.  Snow level 1800 feet. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

Detailed Forecast

Overnight
A slight chance of showers between 4am and 5am. Mostly cloudy, with a low around 48. Calm wind. Chance of precipitation is 20%.
Sunday
Showers likely, mainly after 4pm. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 61. Calm wind becoming west southwest around 6 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A 30 percent chance of showers, mainly before 2am. Mostly cloudy, with a low around 46. West northwest wind around 5 mph becoming calm in the evening.
Monday
A 50 percent chance of showers, mainly after 11am. Mostly cloudy, with a high near 59. Calm wind becoming west southwest around 6 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 41. West wind around 6 mph becoming calm in the evening.
Tuesday
Rain, mainly after 11am. High near 54. Chance of precipitation is 90%.
Tuesday Night
Rain. Low around 39. Chance of precipitation is 100%.
Wednesday
Rain likely, then showers and possibly a thunderstorm after 11am. Snow level 2100 feet. Mostly cloudy, with a high near 54.
Wednesday Night
A chance of rain, mainly before 11pm. Snow level 1800 feet. Mostly cloudy, with a low around 35.
Thursday
A chance of rain after 11am. Snow level 1600 feet rising to 2800 feet in the afternoon. Mostly sunny, with a high near 57.
Thursday Night
Partly cloudy, with a low around 36.
Friday
Partly sunny, with a high near 60.
Friday Night
Partly cloudy, with a low around 36.
Saturday
Partly sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
Hillsboro OR
 45.53°N 122.92°W (Elev. 200 ft)
2:01 am PDT Apr 12, 2026
2am PDT Apr 12, 2026-6pm PDT Apr 18, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database