Weather forecast for 10 daysPort Jefferson, OH
Weather forecast for the weekend
Sunday Oct 18, 2026
- 64°F
- 37°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 8mphS 174°
- Humidity: 60%
- UV index: 4
- Sunrise: 7:50 am EDT
- Sunset: 6:52 pm EDT
- details ▼
On Sunday, in Port Jefferson, sunshine will likely continue with scattered clouds at most.
Dramatic changes in temperature are predicted, reaching a high of a comfortable 64.4°F and falling to a low of an icy 37.4°F.
Expect temperatures to reach October's average high of 61.7°F.
Sunrise will be at 7:50 am and sunset at 6:52 pm; the daylight will last for 11h and 2min.
Dramatic changes in temperature are predicted, reaching a high of a comfortable 64.4°F and falling to a low of an icy 37.4°F.
Expect temperatures to reach October's average high of 61.7°F.
Sunrise will be at 7:50 am and sunset at 6:52 pm; the daylight will last for 11h and 2min.
10-day overview
Daily temperatures
Warmest day: Monday 26.10. 72°C.
Coldest day: today 64°C.
Coldest day: today 64°C.
Chance of precipitation
Highest chance: Wednesday 9%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 64°F
- 37°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 8mphS 174°
- Humidity: 60%
- UV index: 4
- Sunrise: 7:50 am EDT
- Sunset: 6:52 pm EDT
- details ▼
- Monday
- Oct 19, 2026
- 68°F
- 37°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 2mphESE 114°
- Humidity: 53%
- UV index: 4
- Sunrise: 7:51 am EDT
- Sunset: 6:50 pm EDT
- details ▼
- Tuesday
- Oct 20, 2026
- 70°F
- 39°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 6mphNE 42°
- Humidity: 56%
- UV index: 4
- Sunrise: 7:52 am EDT
- Sunset: 6:49 pm EDT
- details ▼
- Wednesday
- Oct 21, 2026
- 68°F
- 39°F
Partly Cloudy
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 5mphNNE 26°
- Humidity: 68%
- UV index: 4
- Sunrise: 7:53 am EDT
- Sunset: 6:47 pm EDT
- details ▼
- Thursday
- Oct 22, 2026
- 68°F
- 41°F
Mostly Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 6mphNNE 16°
- Humidity: 65%
- UV index: 4
- Sunrise: 7:55 am EDT
- Sunset: 6:46 pm EDT
- details ▼
- Friday
- Oct 23, 2026
- 70°F
- 37°F
Mostly Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 6mphENE 60°
- Humidity: 67%
- UV index: 4
- Sunrise: 7:56 am EDT
- Sunset: 6:45 pm EDT
- details ▼
- Saturday
- Oct 24, 2026
- 68°F
- 39°F
Mostly Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 6mphESE 112°
- Humidity: 60%
- UV index: 4
- Sunrise: 7:57 am EDT
- Sunset: 6:43 pm EDT
- details ▼
- Sunday
- Oct 25, 2026
- 70°F
- 43°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 5mphS 175°
- Humidity: 55%
- UV index: 3
- Sunrise: 7:58 am EDT
- Sunset: 6:42 pm EDT
- details ▼
- Monday
- Oct 26, 2026
- 72°F
- 46°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 5mphWSW 244°
- Humidity: 56%
- UV index: 4
- Sunrise: 7:59 am EDT
- Sunset: 6:41 pm EDT
- details ▼
- Tuesday
- Oct 27, 2026
- 68°F
- 46°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 7mphNE 44°
- Humidity: 60%
- UV index: 4
- Sunrise: 8:00 am EDT
- Sunset: 6:39 pm EDT
- details ▼
For the coming ten days, a combination of clear and gloomy weather is predicted.
Rain is not anticipated in Port Jefferson in the upcoming period.
In the upcoming period, the maximum temperature will range between 64.4°F and 71.6°F, while nighttime temperatures are expected to vary from 37.4°F to 46.4°F.
Next Monday is expected to be the warmest, reaching up to 71.6°F; today is the coldest day, with a maximum temperature of 64.4°F.
Rain is not anticipated in Port Jefferson in the upcoming period.
In the upcoming period, the maximum temperature will range between 64.4°F and 71.6°F, while nighttime temperatures are expected to vary from 37.4°F to 46.4°F.
Next Monday is expected to be the warmest, reaching up to 71.6°F; today is the coldest day, with a maximum temperature of 64.4°F.
Updated: Oct 18, 2026 @ 10:19:32 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Sunday, in Port Jefferson, sunshine is forecasted under mostly clear skies.
Today, the highest temperature will be 64.4°F, while the lowest temperature will be 37.4°F.
The maximum temperature today will be in line with the average highest temperature in October. Today, the lowest temperature will be a couple of degrees lower than the average low temperature.
The maximum temperature today will be in line with the average highest temperature in October. Today, the lowest temperature will be a couple of degrees lower than the average low temperature.
On Sunday, in Port Jefferson, sunrise will be at 7:50 am and sunset at 6:52 pm (EDT).
Today, the daylight will last for 11h and 2min.
