Local Forecast

Portsmouth, IA Weather Forecast & Alerts

Current conditions, 5-day forecast, active weather alerts for Portsmouth, IA

No Active Alerts

Hour-by-Hour  Current Observation

Wednesday 11:35 AM CDTWednesday 11:35 AM

°F °C
Regional Observations →
78°F

Clear

  • 93° / 73° High / Low
  • 81° Feels Like
  • 0% Chance of Rain

Wind

13 mph

SE

UV Index

7

High

Humidity

79%

Dew 71°F

Sun

6:50 AM · 7:52 PM

Rise · Set

Source: DENISON (KDNS). Slider scrubs the next 12 hours.

5-Day Outlook

Through Sunday

Local Radar →

Today

93° 73°

Isolated T-storm

Overnight: Chance of Thunderstorms

Detailed forecast

Today

A slight chance of showers and thunderstorms before 5pm. Sunny, with a high near 93. South southwest wind around 10 mph, with gusts as high as 16 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

Night

A chance of showers and thunderstorms after 2am. Mostly clear. Low around 73, with temperatures rising to around 75 overnight. South wind 5 to 9 mph, with gusts as high as 16 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

Thursday

93° 75°

Chance of Thunderstorms

Overnight: Partly Cloudy

Detailed forecast

Thursday

A chance of showers and thunderstorms before 10am, then a chance of showers and thunderstorms between 10am and 11am, then a slight chance of showers and thunderstorms between 11am and noon. Mostly sunny, with a high near 92. South wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

Night

Mostly clear, with a low around 74. South wind around 10 mph, with gusts as high as 17 mph.

Friday

91° 73°

Isolated T-storm

Overnight: Mostly Cloudy

Detailed forecast

Friday

A slight chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 91. South wind 7 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

Night

Partly cloudy, with a low around 72. South southeast wind around 7 mph.

Saturday

91° 71°

Partly Sunny

Overnight: Isolated T-storm

Detailed forecast

Saturday

Mostly sunny, with a high near 91. South southeast wind 3 to 8 mph.

Night

A slight chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 71. South southeast wind around 6 mph.

Sunday

89° 69°

Partly Sunny

Overnight: Chance of Scattered Thunderstorms

Detailed forecast

Sunday

A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 89. South southeast wind around 6 mph.

Night

A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 69. East southeast wind around 6 mph.

Portsmouth, IA Weather Analysis Tools