Local Forecast

Portsmouth, IA Weather Forecast & Alerts

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

Active Alerts 1 active

Hour-by-Hour  Current Observation

Monday 1:15 PM CDTMonday 1:15 PM

°F °C
Regional Observations →
82°F

Clear

  • 86° / 68° High / Low
  • 87° Feels Like
  • 0% Chance of Rain

Wind

5 mph

N

UV Index

11

Extreme

Humidity

70%

Dew 71°F

Sun

5:47 AM · 8:54 PM

Rise · Set

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

5-Day Outlook

Through Friday

Local Radar →

Today

86° 68°

Mostly Cloudy

Overnight: Isolated T-storm

Detailed forecast

Today

Mostly sunny, with a high near 86. Southeast wind around 5 mph.

Night

A slight chance of showers and thunderstorms between 8pm and 3am. Mostly cloudy, with a low around 68. South southeast wind around 3 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

Tuesday

93° 73°

Mostly Cloudy

Overnight: Chance of Thunderstorms

Detailed forecast

Tuesday

Mostly sunny, with a high near 92. South southeast wind 3 to 17 mph, with gusts as high as 25 mph. New rainfall amounts less than a tenth of an inch possible.

Night

A chance of showers and thunderstorms between 10pm and midnight, then a chance of showers and thunderstorms between midnight and 1am, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. South wind around 18 mph, with gusts as high as 29 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

Wednesday

93° 64°

Chance of Scattered Thunderstorms

Overnight: Chance of Scattered Thunderstorms

Detailed forecast

Wednesday

A chance of showers and thunderstorms. Sunny, with a high near 93. Southwest wind 13 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

Night

A chance of showers and thunderstorms. Mostly clear, with a low around 63. Southwest wind 3 to 12 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.

Thursday

86° 59°

Mostly Sunny

Overnight: Mostly Clear

Detailed forecast

Thursday

A chance of showers and thunderstorms before 1pm. Sunny, with a high near 85. West northwest wind 3 to 14 mph, with gusts as high as 21 mph.

Night

Mostly clear, with a low around 58. West northwest wind 2 to 9 mph, with gusts as high as 17 mph.

Friday

86° 62°

Slight Chance of Showers

Overnight: Chance of Scattered Thunderstorms

Detailed forecast

Friday

A slight chance of rain showers after 1pm. Sunny, with a high near 85. Southwest wind 3 to 13 mph, with gusts as high as 18 mph.

Night

A slight chance of rain showers before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a slight chance of showers and thunderstorms. Mostly clear, with a low around 62. South wind 5 to 9 mph, with gusts as high as 16 mph.

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