Weather in Portland, United States
Weather Advisories
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Tomorrow's weather summary
The weather in Portland on Friday, September 29th, is going to be cloudy throughout the day.
Also, there's a high chance of many clouds in the afternoon, at about 4 pm.
Weather details for Portland, on Friday, September 29th:
The highest temperature during the day is going to be 57°F around 3 pm. The day will have very high relative humidity, with average humidity of 81%, ranging from 70% to a maximum value of 88% at about 1 am. The wind will be breezy, and will get up to 11 mph at 9 pm, blowing from the north. The cloud coverage will range from 68% around 4 pm to as high as 100% around 10 pm with an average of 98%.
The chances of precipitation throughout the day will change between 0% and 10%. The highest chance for precipitation will be around 9 am and the lowest probability around midnight. The dew point will range from 45°F up to a maximum value of 50°F around midnight.
The visibility is expected to be good with average visibility of 10 mi throughout the day. Atmospheric pressure will be normal with average pressure of 1014 hPa. Sunrise will be at 7:06 am, and sunset at 6:56 pm. The day will have 11 hours and 50 minutes of daylight.
Air quality forecast for Portland, on Friday, September 29th:
On average, the air quality on this day will be good, meaning that air quality is satisfactory, and air pollution poses little or no risk. According to our index, ranging from 0 to 500, the air quality is going to be between values of 25 and 51.
Pollen forecast for Portland, on Friday, September 29th:
The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have no risk. There's very low risk of weed pollen, and as for grass pollen, this day is expected to have no risk.
The weather in Portland on Saturday, September 30th, will be clear for most of the day, with cloud overcast before dawn.
There is also a chance for some clouds before dawn at about 1 am.
Weather information for Portland, on Saturday, September 30th:
The highest temperature of the day will be 67°F at about 4 pm. The day will have very high relative humidity, with average humidity of 70%, ranging from 42% to a maximum value of 90% at about 6 am. The wind will be breezy, and will get up to 11 mph at 3 pm, blowing from the north. The cloud coverage will range from 0% around 3 pm to as high as 98% around midnight with an average of 10%.
There is no probability for any precipitation throughout the day. The dew point will range from 43°F up to a maximum value of 48°F around noon.
The visibility is expected to be good with average visibility of 9 mi throughout the day. Atmospheric pressure will be normal with average pressure of 1015 hPa. Sunrise will be at 7:07 am, and sunset at 6:54 pm, making it a total of 11 hours and 47 minutes of daylight.
Air quality forecast for Portland, on Saturday, September 30th:
On average, the air quality on this day will be good, meaning that air quality is satisfactory, and air pollution poses little or no risk. According to our index, ranging from 0 to 500, the air quality is going to be between values of 23 and 37.
Pollen forecast for Portland, on Saturday, September 30th:
Tree pollen on this day is expected to have no risk. There's low risk of weed pollen, and as for grass pollen, this day is expected to have very low risk.
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