National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Corvallis, Corvallis Municipal Airport (KCVO)

Lat: 44.5°NLon: 123.28333°WElev: 246.0ft.

Overcast

55°F

13°C

Humidity 62%
Wind Speed NNW 5 MPH
Barometer 30.29 in (1025.74 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 21 Mar 03:00 PM PDT
Extended Forecast for

3 Miles ENE Harlan OR

  • This Afternoon

    This Afternoon: Sunny, with a high near 53. Northwest wind around 6 mph.

    High: 53 °F

    Sunny

  • Tonight

    Tonight: Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 33. Northwest wind around 6 mph becoming calm in the evening.

    Low: 33 °F

    Frost

  • Sunday

    Sunday: Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 55. North northeast wind 5 to 8 mph.

    High: 55 °F

    Frost then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Patchy frost after 4am. Otherwise, mostly cloudy, with a low around 35. North northeast wind 5 to 8 mph becoming calm after midnight.

    Low: 35 °F

    Mostly Cloudy
    then Patchy
    Frost

  • Monday

    Monday: Areas of frost before 9am. Otherwise, partly sunny, with a high near 56. Calm wind.

    High: 56 °F

    Areas Frost
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: Showers likely after 11pm. Cloudy, with a low around 44. Chance of precipitation is 60%.

    Low: 44 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers. High near 53. Chance of precipitation is 100%.

    High: 53 °F

    Showers

  • Tuesday Night

    Tuesday Night: Rain. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Rain

  • Wednesday

    Wednesday: Rain. Mostly cloudy, with a high near 52.

    High: 52 °F

    Rain

Detailed Forecast

This Afternoon
Sunny, with a high near 53. Northwest wind around 6 mph.
Tonight
Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 33. Northwest wind around 6 mph becoming calm in the evening.
Sunday
Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 55. North northeast wind 5 to 8 mph.
Sunday Night
Patchy frost after 4am. Otherwise, mostly cloudy, with a low around 35. North northeast wind 5 to 8 mph becoming calm after midnight.
Monday
Areas of frost before 9am. Otherwise, partly sunny, with a high near 56. Calm wind.
Monday Night
Showers likely after 11pm. Cloudy, with a low around 44. Chance of precipitation is 60%.
Tuesday
Showers. High near 53. Chance of precipitation is 100%.
Tuesday Night
Rain. Mostly cloudy, with a low around 41.
Wednesday
Rain. Mostly cloudy, with a high near 52.
Wednesday Night
A chance of rain. Snow level 3300 feet lowering to 2000 feet after midnight . Mostly cloudy, with a low around 34.
Thursday
A slight chance of rain. Snow level 1700 feet rising to 2800 feet in the afternoon. Mostly sunny, with a high near 53.
Thursday Night
Mostly clear, with a low around 35.
Friday
Sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Harlan OR
 44.56°N 123.62°W (Elev. 1260 ft)
Last Update:
2:41 pm PDT Mar 21, 2026
Forecast Valid:
3pm PDT Mar 21, 2026-6pm PDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation