Weather forecast for 10 daysPortsmouth, OH

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 64°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 4mphE 98°
  • Humidity: 53%
  • UV index: 5
  • Sunrise: 7:44 am EDT
  • Sunset: 6:49 pm EDT
  • ▼
Today, in Portsmouth, some passing clouds may drift through, but the sun will shine at times.
Temperatures will see a substantial oscillation, reaching a high of a breezy 64.4°F and dropping to a low of a wintry 35.6°F.
The expected temperature peak will correspond with October's average maximum of 65.3°F.
Sunrise was at 7:44 am and sunset will be at 6:49 pm; the daylight will last for 11h and 5min.

10-day overview

Daily temperatures

Maximum temperature: 72°C.
Coldest day: today 64°C.

Chance of precipitation

Highest chance: tomorrow 20%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 64°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 4mphE 98°
  • Humidity: 53%
  • UV index: 5
  • Sunrise: 7:44 am EDT
  • Sunset: 6:49 pm EDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 70°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 2mphENE 69°
  • Humidity: 55%
  • UV index: 5
  • Sunrise: 7:45 am EDT
  • Sunset: 6:48 pm EDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 72°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 4mphNNE 20°
  • Humidity: 55%
  • UV index: 4
  • Sunrise: 7:46 am EDT
  • Sunset: 6:46 pm EDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 72°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 4mphN 9°
  • Humidity: 64%
  • UV index: 4
  • Sunrise: 7:47 am EDT
  • Sunset: 6:45 pm EDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 68°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 4mphNNE 13°
  • Humidity: 60%
  • UV index: 4
  • Sunrise: 7:48 am EDT
  • Sunset: 6:44 pm EDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 70°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 5mphNE 44°
  • Humidity: 65%
  • UV index: 4
  • Sunrise: 7:49 am EDT
  • Sunset: 6:42 pm EDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 70°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 3mphE 84°
  • Humidity: 62%
  • UV index: 4
  • Sunrise: 7:50 am EDT
  • Sunset: 6:41 pm EDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 70°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 2mphESE 109°
  • Humidity: 61%
  • UV index: 4
  • Sunrise: 7:51 am EDT
  • Sunset: 6:40 pm EDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 72°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 2mphNE 42°
  • Humidity: 62%
  • UV index: 4
  • Sunrise: 7:52 am EDT
  • Sunset: 6:39 pm EDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 72°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 4mphNNE 26°
  • Humidity: 64%
  • UV index: 4
  • Sunrise: 7:53 am EDT
  • Sunset: 6:37 pm EDT
  • ▼
Ten-day trends indicate that a combination of sun-filled and gloomy weather is predicted.
Rain is not anticipated in Portsmouth in the upcoming days.
In the upcoming period, the highest temperature will vary between 64.4°F and 71.6°F, while the minimum temperature is forecast to range between 35.6°F and 46.4°F.
Tuesday, Wednesday, next Monday and Tuesday, with the highest temperature of 71.6°F, will be the warmest days; today is the coldest day, with a maximum temperature of 64.4°F.
Updated: Oct 18, 2026 @ 12:42:07 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, patchy clouds will move across the sky, allowing for sunshine at times.

Today, the highest temperature will be 64.4°F, while the lowest temperature will be 35.6°F.
The maximum temperature will be in line with the average highest temperature of 65.3°F in October. The lowest temperature will be uncommonly lower than the average low of 46.8°F.

On Sunday, in Portsmouth, sunrise was at 7:44 am and sunset will be at 6:49 pm (EDT).

In Portsmouth, today, there will be 11h and 5min of daylight.