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Mount Vernon, OR Weather Tomorrow

Use tomorrow's Mount Vernon weather forecast and the next 5 day outlook to track 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 Mount Vernon area and around Grant county, Oregon.
Updated: Mon Sep 14th 2026 9:15 AM PDT
Mount Vernon, OR Weather – 9-14 – Sunny
64° / 40°
Sunny
Sunshine is in the forecast for Mount Vernon, with a high of 64°F and a low of 40°F. There might be light rainfall having a 17% chance with an estimated 0.01in. Winds will be light at 5mph and gusts of 13mph at 7 PM. Humidity levels should be comfortable, sitting around 57% on average, the maximum being 58% at 10 AM and 23% being its lowest at 4 PM. Barometric pressure is its highest of 30.1inHg at 10 AM, a lowest point of 29.96inHg at 5 PM with an avg 30.02inHg.
Mount Vernon, OR Weather – 9-15 – Partly Cloudy
69° / 43°

Weather Tomorrow

Partly Cloudy
In Mount Vernon, it will be cloudy with highs near 69°F and lows around 43°F. There's a very small chance of rainfall, only about 5%. Wind will be moderate, blowing around 13mph on average and gusts of 18.8mph at 5 PM. Humidity levels should be comfortable, sitting around 44% on average, the maximum being 73% at 11 PM and 22% being its lowest at 3 PM. Barometric pressure is its highest of 30.02inHg at 12 AM, a lowest point of 29.81inHg at 5 PM with an avg 29.93inHg.
Mount Vernon, OR Weather – 9-16 – Sunny
71° / 44°
Sunny
In Mount Vernon, it will be sunny with highs near 71°F and lows around 44°F. There's a very small chance of rainfall, only about 7% with an estimated 0in. Wind will be moderate, blowing around 16mph on average and gusts of 24.6mph at 4 PM. Humidity levels should be comfortable, sitting around 59% on average, the maximum being 81% at 7 AM and 29% being its lowest at 3 PM. Barometric pressure is its highest of 30.08inHg at 9 AM, a lowest point of 29.92inHg at 4 PM with an avg 30.02inHg.
Mount Vernon, OR Weather – 9-17 – Scattered Showers
70° / 45°
Scattered Showers
Mount Vernon could see scattered showers with daytime highs of 70°F and nighttime lows near 45°F. There might be light rainfall having a 19% chance with an estimated 0.01in. Wind will be moderate, blowing around 11mph on average and gusts of 14.6mph at 3 PM. Humidity levels should be comfortable, sitting around 59% on average, the maximum being 83% at 5 AM and 30% being its lowest at 1 PM. Barometric pressure is its highest of 30.06inHg at 12 AM, a lowest point of 29.94inHg at 1 PM with an avg 30.01inHg.
Mount Vernon, OR Weather – 9-18 – Sunny
79° / 47°
Sunny
It will be sunny in Mount Vernon, with a high of 79°F and a low of 47°F. There's a very small chance of rainfall, only about 2%. Winds will be light at 5mph and gusts of 13mph at 5 PM. Humidity levels should be comfortable, sitting around 43% on average, the maximum being 78% at 7 AM and 16% being its lowest at 3 PM. Barometric pressure is its highest of 30.17inHg at 8 AM, a lowest point of 29.97inHg at 5 PM with an avg 30.06inHg.
Mount Vernon, OR Weather – 9-19 – Sunny
83° / 54°
Sunny
It will be sunny in Mount Vernon, with a high of 83°F and a low of 54°F. There's a very small chance of rainfall, only about 1%. Wind will be moderate, blowing around 13mph on average and gusts of 15.4mph at 5 PM. Humidity levels should be comfortable, sitting around 30% on average, the maximum being 44% at 11 PM and 13% being its lowest at 3 PM. Barometric pressure is its highest of 30.07inHg at 12 AM, a lowest point of 29.81inHg at 5 PM with an avg 29.96inHg.

Currently

Sunny 47°F
30.12 inHg.
Barometer
72%
Humidity
SSW 4.3 mph
Wind
Sunny

5 Day Forecast Nearby

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