Weather in Port Jefferson, United States
Weather Advisories
in the data behind our forecast?
Today's weather summary
The weather in Port Jefferson on Sunday, July 26th, will be clear throughout the day.
Additionally, there will be cloud overcast during the evening, at about 6 pm.
Weather information for Port Jefferson, on Sunday, July 26th:
The highest temperature of the day will be 26°C around 4 pm. The day will be humid, with average humidity of 67%, ranging from 44% to a maximum value of 88% at about 6 am. The wind will be light, and will get up to 12 km/h at 10 am, blowing from the north-east. The cloud coverage will range from 0% around midnight to as high as 100% around 7 pm with an average of 12%.
There is no probability for any precipitation throughout the day. The dew point will range from 12°C up to a maximum value of 17°C around 11 pm.
The visibility is expected to be good with average visibility of 16 km throughout the day. Atmospheric pressure will be normal with average pressure of 1013 hPa. Sunrise will be at 5:42 am, and sunset at 8:14 pm. The day will have 14 hours and 32 minutes of daylight.
Air quality forecast for Port Jefferson, on Sunday, July 26th:
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 29 and 52.
Pollen forecast for Port Jefferson, on Sunday, July 26th:
The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have no risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.
The weather in Port Jefferson on Monday, July 27th, is going to be cloudy throughout the day, together with clear skies before dawn.
There is also a chance for few clouds before dawn at about 4 am.
Weather information for Port Jefferson, on Monday, July 27th:
The highest temperature during the day will be 28°C around 3 pm. The day will have very high relative humidity, with average humidity of 74%, ranging from 58% to a maximum value of 90% at about 11 pm. The wind will be breezy, and will get up to 18 km/h at 10 pm, blowing from the south. The cloud coverage will range from 0% around midnight to as high as 100% around 11 pm with an average of 54%.
There is no probability for any precipitation throughout the day. The dew point will range from 16°C up to a maximum value of 21°C around 11 pm.
The visibility is expected to be good with average visibility of 16 km throughout the day. Atmospheric pressure will be normal with average pressure of 1010 hPa. Sunrise will be at 5:43 am, and sunset at 8:13 pm, making it a total of 14 hours and 30 minutes of daylight.
Air quality forecast for Port Jefferson, on Monday, July 27th:
On average, the air quality on this day will be moderate, meaning that air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. According to our index, ranging from 0 to 500, the air quality is going to be between values of 52 and 78.
Pollen forecast for Port Jefferson, on Monday, July 27th:
The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have no risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.
Nearby locations
FAQ
