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Union, OR Weather Tomorrow

Use tomorrow's Union weather forecast and the next 5 day outlook to track 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 Union area and around Union county, Oregon.
Updated: Sat Aug 29th 2026 8:30 PM PDT
Union, OR Weather – 8-29 – Sunny
74° / 54°
Sunny
In Union, it will be sunny with highs near 74°F and lows around 54°F. There's a very small chance of rainfall, only about 1%. Wind will be moderate, blowing around 16mph on average and gusts of 14.3mph at 9 PM. Humidity levels should be comfortable, sitting around 40% on average, the maximum being 46% at 11 PM and 36% being its lowest at 9 PM. Barometric pressure is its highest of 30.03inHg at 11 PM, a lowest point of 30.01inHg at 9 PM with an avg 30.02inHg.
Union, OR Weather – 8-30 – Sunny
68° / 40°

Weather Tomorrow

Sunny
Daytime highs will reach 68°F with lows dropping to 40°F in Union, where it will be sunny. There's a very small chance of rainfall, only about 2%. Winds will be light at 6mph and gusts of 17mph at 6 PM. Humidity levels should be comfortable, sitting around 40% on average, the maximum being 73% at 6 AM and 17% being its lowest at 5 PM. Barometric pressure is its highest of 30.09inHg at 6 AM, a lowest point of 29.89inHg at 5 PM with an avg 30inHg.
Union, OR Weather – 8-31 – Smoky Haze
82° / 50°
Smoky Haze
Union is set for smoky Haze with temperatures peaking at 82°F and dipping to 50°F. There's a very small chance of rainfall, only about 1%. Winds will be light at 10mph and gusts of 17.9mph at 2 PM. The air will be relatively dry with average humidity levels below 30%, the maximum being 32% at 12 AM and 11% being its lowest at 1 PM. Barometric pressure is its highest of 29.96inHg at 12 AM, a lowest point of 29.69inHg at 6 PM with an avg 29.84inHg.
Union, OR Weather – 9-1 – Overcast
80° / 56°
Overcast
In Union, skies will be overcast with highs near 80°F and lows around 56°F. There's a very small chance of rainfall, only about 9% with an estimated 0in. Wind will be moderate, blowing around 17mph on average and gusts of 21.8mph at 6 PM. The air will be relatively dry with average humidity levels below 30%, the maximum being 49% at 11 PM and 17% being its lowest at 6 PM. Barometric pressure is its highest of 29.8inHg at 11 PM, a lowest point of 29.64inHg at 6 PM with an avg 29.74inHg.
Union, OR Weather – 9-2 – Overcast
67° / 49°
Overcast
In Union, skies will be overcast with highs near 67°F and lows around 49°F. There's a moderate 37% chance of rainfall with an estimated 0.02in. Wind will be moderate, blowing around 14mph on average and gusts of 15.5mph at 1 PM. Humidity levels should be comfortable, sitting around 57% on average, the maximum being 72% at 6 AM and 32% being its lowest at 1 PM. Barometric pressure is its highest of 29.89inHg at 9 AM, a lowest point of 29.8inHg at 5 PM with an avg 29.84inHg.
Union, OR Weather – 9-3 – Scattered Showers
61° / 48°
Scattered Showers
Daytime highs will reach 61°F with lows dropping to 48°F in Union, where on and off showers are set to occur. Rainfall predicted to have a 67% chance with an estimated 0.1in. Winds will be light at 6mph and gusts of 16.6mph at 8 PM. The humidity will be on the higher side, averaging about 68%, the maximum being 83% at 8 AM and 49% being its lowest at 5 PM. Barometric pressure is its highest of 29.92inHg at 8 PM, a lowest point of 29.86inHg at 3 AM with an avg 29.89inHg.

Currently

Clear 59°F
29.99 inHg.
Barometer
33%
Humidity
NNE 5.8 mph
Wind
Clear

5 Day Forecast Nearby

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