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Jefferson, OR Weather Tomorrow

Get tomorrow's weather for Jefferson plus an extended 5 day forecast providing precipitation chances, day and night conditions, high and low temperatures in Fahrenheit and Celsius, sunrise, sunset, sky conditions, wind chill, and wind speed with direction for the Jefferson area and around Marion county, Oregon.
Updated: Mon Aug 31st 2026 6:15 PM PDT
Jefferson, OR Weather – 8-31 – Overcast
86° / 52°
Overcast
In Jefferson, cloud-filled skies are likely with a high near 86°F and a low around 52°F. There's a very small chance of rainfall, only about 7%. Winds will be light at 9mph and gusts of 12.6mph at 7 PM. The humidity will be on the higher side, averaging about 61%, the maximum being 90% at 11 PM and 44% being its lowest at 7 PM. Barometric pressure is its highest of 29.85inHg at 11 PM, a lowest point of 29.75inHg at 7 PM with an avg 29.8inHg.
Jefferson, OR Weather – 9-1 – Overcast
72° / 54°

Weather Tomorrow

Overcast
In Jefferson, it will be overcast with highs near 72°F and lows around 54°F. There might be light rainfall having a 23% chance with an estimated 0in. Wind will be moderate, blowing around 14mph on average and gusts of 17.1mph at 12 AM. The humidity will be on the higher side, averaging about 74%, the maximum being 96% at 2 AM and 45% being its lowest at 4 PM. Barometric pressure is its highest of 29.9inHg at 9 PM, a lowest point of 29.84inHg at 4 PM with an avg 29.88inHg.
Jefferson, OR Weather – 9-2 – Light Rain
62° / 52°
Light Rain
Highs will reach 62°F with lows near 52°F in Jefferson, where rain is. The chance of rain is 91% with an estimated 0.75in. Wind will be moderate, blowing around 11mph on average and gusts of 24.6mph at 5 PM. High humidity with average of 90% is anticipated, the maximum being 97% at 7 PM and 64% being its lowest at 11 AM. Barometric pressure is its highest of 29.89inHg at 12 AM, a lowest point of 29.79inHg at 4 PM with an avg 29.84inHg.
Jefferson, OR Weather – 9-3 – Scattered Showers
67° / 51°
Scattered Showers
Showers likely at times in Jefferson, with a high of 67°F and a low of 51°F. The chance of rain is 82% with an estimated 0.28in. Wind will be moderate, blowing around 13mph on average and gusts of 22mph at 11 PM. The humidity will be on the higher side, averaging about 79%, the maximum being 97% at 4 AM and 48% being its lowest at 4 PM. Barometric pressure is its highest of 29.91inHg at 10 AM, a lowest point of 29.83inHg at 4 PM with an avg 29.86inHg.
Jefferson, OR Weather – 9-4 – Overcast
67° / 52°
Overcast
Daytime highs will reach 67°F with lows dropping to 52°F in Jefferson, where it will be overcast. Rainfall predicted to have a 75% chance with an estimated 0.23in. Winds will be light at 10mph and gusts of 24.9mph at 1 AM. The humidity will be on the higher side, averaging about 72%, the maximum being 94% at 2 AM and 44% being its lowest at 3 PM. Barometric pressure is its highest of 29.93inHg at 11 PM, a lowest point of 29.83inHg at 3 AM with an avg 29.87inHg.
Jefferson, OR Weather – 9-5 – Sunny
73° / 51°
Sunny
A sunny day is in the forecast for Jefferson, with a high of 73°F and a low of 51°F. There's a very small chance of rainfall, only about 6%. Winds will be light at 7mph and gusts of 15.4mph at 1 PM. The humidity will be on the higher side, averaging about 65%, the maximum being 92% at 4 AM and 39% being its lowest at 5 PM. Barometric pressure is its highest of 30.01inHg at 8 AM, a lowest point of 29.92inHg at 5 PM with an avg 29.96inHg.

Currently

Cloudy 80°F
29.73 inHg.
Barometer
37%
Humidity
WSW 13 mph
Wind
Cloudy

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