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Lake Oswego, OR Weather Tomorrow

Planning ahead? View tomorrow's Lake Oswego weather along with a complete 5 day forecast that includes precipitation potential, daytime and nighttime forecasts, temperature highs and lows in Fahrenheit and Celsius, sunrise and sunset times, cloud cover, wind chill, wind speed, and wind direction for the Lake Oswego area and around Washington county, Oregon.
Updated: Sat Oct 31st 2026 7:15 AM PDT
Lake Oswego, OR Weather – 10-31 – Overcast
55° / 40°
Overcast
Lake Oswego could see overcast with daytime highs of 55°F and nighttime lows near 40°F. There might be light rainfall having a 15% chance. Winds will be light at 4mph and gusts of 13mph at 6 PM. The humidity will be on the higher side, averaging about 77%, the maximum being 95% at 8 AM and 51% being its lowest at 4 PM. Barometric pressure is its highest of 29.99inHg at 9 AM, a lowest point of 29.9inHg at 5 PM with an avg 29.94inHg.
Lake Oswego, OR Weather – 11-1 – Sunny
56° / 41°

Weather Tomorrow

Sunny
Lake Oswego may see a sunny day, with daytime highs of 56°F and overnight lows near 41°F. There's a very small chance of rainfall, only about 7%. Winds will be light at 3mph and gusts of 11.2mph at 11 PM. The humidity will be on the higher side, averaging about 71%, the maximum being 91% at 4 AM and 46% being its lowest at 3 PM. Barometric pressure is its highest of 30.19inHg at 11 PM, a lowest point of 29.96inHg at 12 AM with an avg 30.07inHg.
Lake Oswego, OR Weather – 11-2 – Overcast
53° / 42°
Overcast
Overcast is in the forecast for Lake Oswego, with a high of 53°F and a low of 42°F. There might be light rainfall having a 18% chance. Winds will be light at 4mph and gusts of 13.4mph at 12 AM. The humidity will be on the higher side, averaging about 68%, the maximum being 89% at 4 AM and 49% being its lowest at 2 PM. Barometric pressure is its highest of 30.24inHg at 9 AM, a lowest point of 30.12inHg at 10 PM with an avg 30.19inHg.
Lake Oswego, OR Weather – 11-3 – Overcast
58° / 47°
Overcast
In Lake Oswego, it will be overcast with highs near 58°F and lows around 47°F. There might be light rainfall having a 12% chance. Winds will be light at 3mph and gusts of 13.9mph at 5 AM. Humidity levels should be comfortable, sitting around 59% on average, the maximum being 79% at 10 PM and 41% being its lowest at 2 PM. Barometric pressure is its highest of 30.14inHg at 12 AM, a lowest point of 29.96inHg at 9 PM with an avg 30.05inHg.
Lake Oswego, OR Weather – 11-4 – Overcast
60° / 42°
Overcast
It will be overcast in Lake Oswego, with a high of 60°F and a low of 42°F. There might be light rainfall having a 14% chance. Winds will be light at 5mph and gusts of 13.2mph at 3 AM. The humidity will be on the higher side, averaging about 70%, the maximum being 87% at 7 AM and 46% being its lowest at 2 PM. Barometric pressure is its highest of 30.13inHg at 10 AM, a lowest point of 29.99inHg at 12 AM with an avg 30.06inHg.
Lake Oswego, OR Weather – 11-5 – Scattered Showers
57° / 47°
Scattered Showers
Lake Oswego could see scattered showers with daytime highs of 57°F and nighttime lows near 47°F. The chance of rain is 80% with an estimated 0.21in. Winds will be light at 5mph and gusts of 14.6mph at 7 PM. High humidity with average of 81% is anticipated, the maximum being 89% at 10 PM and 67% being its lowest at 4 PM. Barometric pressure is its highest of 30.11inHg at 11 AM, a lowest point of 30.06inHg at 6 PM with an avg 30.08inHg.

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