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Portland, NY Weather Tomorrow

Access tomorrow's Portland weather forecast and the next 5 days of weather details, including 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 Portland area and around Chautauqua county, New York.
Updated: Thu Oct 22nd 2026 2:45 PM EDT
Portland, NY Weather – 10-22 – Sunny
57° / 49°
Sunny
In Portland, it will be sunny with highs near 57°F and lows around 49°F. There's a very small chance of rainfall, only about 7% with an estimated 0in. Winds will be light at 7mph and gusts of 12mph at 11 PM. The humidity will be on the higher side, averaging about 63%, the maximum being 76% at 11 PM and 56% being its lowest at 3 PM. Barometric pressure is its highest of 30.25inHg at 10 PM, a lowest point of 30.19inHg at 3 PM with an avg 30.22inHg.
Portland, NY Weather – 10-23 – Sunny
57° / 47°

Weather Tomorrow

Sunny
Portland may see sunshine, with daytime highs of 57°F and overnight lows near 47°F. There's a very small chance of rainfall, only about 5% with an estimated 0in. Wind will be moderate, blowing around 14mph on average and gusts of 24.2mph at 3 PM. The humidity will be on the higher side, averaging about 66%, the maximum being 85% at 5 AM and 47% being its lowest at 6 PM. Barometric pressure is its highest of 30.42inHg at 10 PM, a lowest point of 30.25inHg at 12 AM with an avg 30.37inHg.
Portland, NY Weather – 10-24 – Sunny
57° / 46°
Sunny
Highs will reach 57°F with lows near 46°F in Portland, where a sunny day is. There's a very small chance of rainfall, only about 4%. Winds will be light at 9mph and gusts of 16.3mph at 4 PM. The humidity will be on the higher side, averaging about 61%, the maximum being 73% at 11 PM and 53% being its lowest at 12 PM. Barometric pressure is its highest of 30.52inHg at 9 AM, a lowest point of 30.43inHg at 12 AM with an avg 30.47inHg.
Portland, NY Weather – 10-25 – Sunny
59° / 47°
Sunny
In Portland, it will be sunny with highs near 59°F and lows around 47°F. There's a very small chance of rainfall, only about 7%. Wind will be moderate, blowing around 12mph on average and gusts of 17.7mph at 1 AM. The humidity will be on the higher side, averaging about 68%, the maximum being 78% at 11 PM and 55% being its lowest at 2 PM. Barometric pressure is its highest of 30.51inHg at 10 AM, a lowest point of 30.38inHg at 10 PM with an avg 30.46inHg.
Portland, NY Weather – 10-26 – Overcast
59° / 52°
Overcast
Daytime highs will reach 59°F with lows dropping to 52°F in Portland, where it will be overcast. There might be light rainfall having a 14% chance with an estimated 0in. Wind will be moderate, blowing around 19mph on average and gusts of 29.8mph at 10 PM. The humidity will be on the higher side, averaging about 72%, the maximum being 80% at 12 PM and 60% being its lowest at 7 PM. Barometric pressure is its highest of 30.37inHg at 2 AM, a lowest point of 30.27inHg at 4 PM with an avg 30.33inHg.
Portland, NY Weather – 10-27 – Partly Cloudy
51° / 45°
Partly Cloudy
Overcast conditions are in the forecast for Portland, with a high of 51°F and a low of 45°F. There's a very small chance of rainfall, only about 10%. Wind will be moderate, blowing around 16mph on average and gusts of 21.9mph at 12 AM. The humidity will be on the higher side, averaging about 67%, the maximum being 77% at 8 AM and 55% being its lowest at 12 AM. Barometric pressure is its highest of 30.46inHg at 11 AM, a lowest point of 30.36inHg at 1 AM with an avg 30.41inHg.

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