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Monon Lake, OR Weather Forecast

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Monon Lake, OR Weather Forecast

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Monon Lake OR weather - Clear - 50°F
Clear
50°F
Updated 5:54 am
Feels Like 50°F
Humidity 53%
Wind SSE 7 mph
Barometer  29.83 in
Dew Point 33°F
Monon Lake OR weather - Clear - 10°C
Clear
10°C
Updated 5:54 am
Feels Like 10°C
Humidity 53%
Wind SSE 11 km/h
Barometer  101 kPa
Dew Point 1°C
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Monon Lake Weather Forecast

TODAY TONIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SUNDAY MONDAY
Monon Lake, OR Weather - Today Chance Of Showers Monon Lake, OR Weather - Tonight Chance Of Showers Monon Lake, OR Weather - Wednesday Rain Showers Monon Lake, OR Weather - Wednesday Night Rain Showers Monon Lake, OR Weather - Thursday Chance Of Showers Monon Lake, OR Weather - Thursday Night Chance Of Showers Monon Lake, OR Weather - Friday Chance Of Showers Monon Lake, OR Weather - Friday Night Chance Of T-Storm Monon Lake, OR Weather - Saturday Chance Of Showers Monon Lake, OR Weather - Sunday Chance Of Showers Monon Lake, OR Weather - Monday Chance Of Showers
Chance of Showers Chance of Showers Rain Showers Rain Showers Chance of Showers Chance of Showers Chance of Showers Chance of T-Storm Chance of Showers Chance of Showers Chance of Showers
Lo: 49°FLo: 9°C Lo: 36°FLo: 2°C Lo: 36°FLo: 2°C Hi: 69°FHi: 21°C
Lo: 40°FLo: 4°C		 Hi: 69°FHi: 21°C
Lo: 40°FLo: 4°C		 Hi: 69°FHi: 21°C
Lo: 40°FLo: 4°C
POP: 20% POP: 20% POP: 100% POP: 100% POP: 50% POP: 50% POP: 50% POP: 50% POP: 50% POP: 50% POP: 50%
POP = Probability of Precipitation.
Weather Outlook Updated: 401 AM PDT Tue Sep 01 2026 Monon Lake, OR Weather - WeatherWorld.com

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Monon Lake Forecast Discussion

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Issued: 440 AM PDT Tue Sep 1 2026

Key Messages

  • A series of upper level low pressure systems will bring periods of rain, breezy westerly winds, and isolated thunderstorm chances through Friday.

Discussion

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Upper ridging at 500 mb will shift to a southwesterly flow aloft Today as and eastern Pacific trough shifts toward the WA/OR coast. The EC/GFS/HiRes models all show the lead shortwave spreading into nrn CA Tonight and northward toward the Snake River by midday Wednesday. Temperatures today look cooler by about 5 to 10 degrees ac...