Local Forecast

Portsmouth, IA Weather Forecast & Alerts

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

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Hour-by-Hour  Current Observation

Thursday 5:15 AM CDTThursday 5:15 AM

°F °C
Regional Observations →
68°F

Heavy Rain

  • 82° / 68° High / Low
  • 68° Feels Like
  • 0% Chance of Rain

Wind

0 mph

G 36 mph

N

UV Index

0

None

Humidity

100%

Dew 68°F

Sun

6:28 AM · 8:24 PM

Rise · Set

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

5-Day Outlook

Through Monday

Local Radar →

Thursday

82° 68°

Thunderstorms Likely

Overnight: Thunderstorms Likely

Detailed forecast

Thursday

Showers and thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and 3pm. Some of the storms could produce heavy rain. Partly sunny, with a high near 82. East wind 9 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Night

Showers and thunderstorms likely between 7pm and 9pm, then a chance of showers and thunderstorms between 9pm and 11pm, then showers and thunderstorms likely between 11pm and 1am, then a chance of showers and thunderstorms between 1am and 5am, then showers and thunderstorms likely. Mostly cloudy. Low around 68, with temperatures rising to around 71 overnight. East wind 12 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Friday

84° 69°

Chance of Thunderstorms

Overnight: Thunderstorms Likely

Detailed forecast

Friday

Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms between 7am and 11am, then a chance of showers and thunderstorms between 11am and noon, then a chance of showers and thunderstorms between noon and 4pm, then a slight chance of showers and thunderstorms between 4pm and 5pm. Mostly cloudy, with a high near 84. East southeast wind 8 to 12 mph, with gusts as high as 17 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.

Night

A chance of showers and thunderstorms before 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 69. East southeast wind 3 to 8 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

Saturday

86° 66°

Chance of Thunderstorms

Overnight: Thunderstorms Likely

Detailed forecast

Saturday

Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms between 7am and 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 85. West southwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

Night

A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 67. North northwest wind around 3 mph.

Sunday

80° 60°

Chance of Thunderstorms

Overnight: Isolated T-storm

Detailed forecast

Sunday

Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms between 7am and 1pm. Mostly cloudy, with a high near 79. North wind 3 to 8 mph.

Night

Partly cloudy, with a low around 61. Northeast wind 1 to 7 mph.

Monday

77° 60°

Partly Sunny

Overnight: Isolated T-storm

Detailed forecast

Monday

Mostly sunny, with a high near 76. East southeast wind around 3 mph.

Night

A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. South southeast wind around 2 mph.

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