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

Meriden, Meriden Markham Municipal Airport (KMMK)

Lat: 41.51°NLon: 72.83°WElev: 102ft.

Mostly Cloudy

67°F

19°C

Humidity 100%
Wind Speed Calm
Barometer 30.00 in (1015.7 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 24 Sep 3:53 am EDT
Extended Forecast for

Portland CT

  • Overnight

    Overnight: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Cloudy, with a high near 74. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 50%.

    High: 74 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers, then showers and possibly a thunderstorm after 11pm. Low around 63. East wind 3 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 74. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 74 °F

    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 64. Southwest wind 5 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 64 °F

    Showers

  • Friday

    Friday: A 30 percent chance of showers before 2pm. Partly sunny, with a high near 80.

    High: 80 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 79.

    High: 79 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 8pm. Mostly cloudy, with a low around 59.

    Low: 59 °F

    Chance
    Showers

Detailed Forecast

Overnight
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Calm wind.
Wednesday
A chance of showers and thunderstorms. Cloudy, with a high near 74. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 50%.
Wednesday Night
A chance of showers, then showers and possibly a thunderstorm after 11pm. Low around 63. East wind 3 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and possibly a thunderstorm. High near 74. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 64. Southwest wind 5 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A 30 percent chance of showers before 2pm. Partly sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Partly sunny, with a high near 79.
Saturday Night
A 30 percent chance of showers after 8pm. Mostly cloudy, with a low around 59.
Sunday
Partly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 57.
Monday
Partly sunny, with a high near 79.
Monday Night
Mostly cloudy, with a low around 57.
Tuesday
Mostly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portland CT
 41.57°N 72.62°W (Elev. 10 ft)
Last Update:
2:00 am EDT Sep 24, 2025
Forecast Valid:
4am EDT Sep 24, 2025-6pm EDT Sep 30, 2025
 
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