National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Current conditions at

Quonset State Airport (KOQU)

Lat: 41.6°NLon: 71.42°WElev: 20ft.

Fair

64°F

18°C

Humidity 46%
Wind Speed SE 7 mph
Barometer 30.41 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 10 Oct 2:50 pm EDT
Extended Forecast for

Portsmouth RI

  • Tonight

    Tonight: Partly cloudy, with a low around 43. Southeast wind 3 to 5 mph.

    Low: 43 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers, mainly after 4pm. Increasing clouds, with a high near 62. Southeast wind 6 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 62 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm, mainly before 4am, then a chance of showers and thunderstorms after 4am. Some of the storms could produce heavy rainfall. Patchy fog. Low around 57. Northeast wind 8 to 13 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 57 °F

    Heavy Rain
    and Patchy
    Fog

  • Columbus Day

    Columbus Day: Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 65. North wind 9 to 11 mph.

    High: 65 °F

    Patchy Fog
    then Partly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 55. North wind 3 to 8 mph.

    Low: 55 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 63. Northeast wind around 9 mph becoming southeast in the afternoon.

    High: 63 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms after 9pm. Mostly cloudy, with a low around 57. Southwest wind 10 to 13 mph. Chance of precipitation is 40%.

    Low: 57 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers before 11am. Partly sunny, with a high near 68. Southwest wind around 14 mph. Chance of precipitation is 30%.

    High: 68 °F

    Chance
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 51. Northwest wind around 10 mph.

    Low: 51 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 43. Southeast wind 3 to 5 mph.
Sunday
A chance of showers, mainly after 4pm. Increasing clouds, with a high near 62. Southeast wind 6 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Showers and possibly a thunderstorm, mainly before 4am, then a chance of showers and thunderstorms after 4am. Some of the storms could produce heavy rainfall. Patchy fog. Low around 57. Northeast wind 8 to 13 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Columbus Day
Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 65. North wind 9 to 11 mph.
Monday Night
Partly cloudy, with a low around 55. North wind 3 to 8 mph.
Tuesday
Mostly cloudy, with a high near 63. Northeast wind around 9 mph becoming southeast in the afternoon.
Tuesday Night
A chance of showers and thunderstorms after 9pm. Mostly cloudy, with a low around 57. Southwest wind 10 to 13 mph. Chance of precipitation is 40%.
Wednesday
A chance of showers before 11am. Partly sunny, with a high near 68. Southwest wind around 14 mph. Chance of precipitation is 30%.
Wednesday Night
Mostly clear, with a low around 51. Northwest wind around 10 mph.
Thursday
Sunny, with a high near 61. North wind 10 to 13 mph.
Thursday Night
Partly cloudy, with a low around 48. North wind around 8 mph.
Friday
A chance of showers. Partly sunny, with a high near 60. Northeast wind 8 to 13 mph becoming south in the morning. Chance of precipitation is 30%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 51. Southwest wind 14 to 18 mph. Chance of precipitation is 50%.
Saturday
A chance of showers. Partly sunny, with a high near 59. Breezy, with a west wind 17 to 20 mph. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth RI
 41.59°N 71.26°W (Elev. 203 ft)
Last Update:
3:28 pm EDT Oct 10, 2026
Forecast Valid:
3pm EDT Oct 10, 2026-6pm EDT Oct 17, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation