NWS Forecast for Corvallis OR

National Weather Service Forecast for: Corvallis OR
Issued by: National Weather Service Portland, OR

Updated: 12:41 pm PST Feb 2, 2026

This Afternoon Mostly Sunny	Tonight Patchy Fog	Tuesday Areas Dense Fog then Mostly Sunny	Tuesday Night Patchy Dense Fog	Wednesday Areas Dense Fog then Sunny	Wednesday Night Mostly Clear then Patchy Frost and Patchy Dense Fog	Thursday Areas Frost and Patchy Fog then Sunny	Thursday Night Mostly Clear then Patchy Fog	Friday Areas Fog then Mostly Sunny
Hi 58 °F	Lo 38 °F	Hi 57 °F	Lo 38 °F	Hi 58 °F	Lo 34 °F	Hi 57 °F	Lo 36 °F	Hi 59 °F

Air Stagnation Advisory

This Afternoon	Mostly sunny, with a high near 58. Calm wind.
Tonight	Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 38. Calm wind.
Tuesday	Areas of dense fog before 11am. Otherwise, partly sunny, with a high near 57. Calm wind.
Tuesday Night	Patchy dense fog after 9pm. Otherwise, mostly cloudy, with a low around 38. Calm wind.
Wednesday	Areas of dense fog before 11am. Otherwise, mostly sunny, with a high near 58. Calm wind.
Wednesday Night	Patchy dense fog after midnight. Patchy frost after 3am. Otherwise, mostly clear, with a low around 34.
Thursday	Patchy fog before 9am. Areas of frost before 9am. Otherwise, sunny, with a high near 57.
Thursday Night	Patchy fog after 1am. Otherwise, mostly clear, with a low around 36.
Friday	Areas of fog before 8am. Otherwise, mostly sunny, with a high near 59.
Friday Night	A slight chance of rain after 4am. Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 39.
Saturday	A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 57.
Saturday Night	Rain likely. Patchy fog. Otherwise, mostly cloudy, with a low around 43.
Sunday	Rain. Patchy fog. Otherwise, mostly cloudy, with a high near 53.

Forecast from NOAA-NWS for Corvallis OR.