Heavy Rain and Snowmelt Threatens Flooding in Southeast and Mid-Atlantic; Strong Cold Front Presses Across the Northwest

A southern storm system will bring heavy to excessive rain from the Southeast to the Mid-Atlantic through Saturday with a secondary heavy rain threat area from the Lower Mississippi Valley into the Ohio Valley. Out West, a strong cold front will continue rain, mountain snow and gusty winds into Saturday morning. Another front will bring more unsettled weather to the region by Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

Pease Air Force Base / Portsmouth (KPSM)

Lat: 43.08°NLon: 70.82°WElev: 102ft.

Fog/Mist

41°F

5°C

Humidity 97%
Wind Speed SW 6 mph
Barometer 30.12 in (1020.3 mb)
Dewpoint 40°F (4°C)
Visibility 6.00 mi
Wind Chill37°F (3°C)
Last update 15 Dec 3:56 am EST
Extended Forecast for

Portsmouth NH

  • Today

    Today: Partly sunny, with a high near 49. West wind 5 to 10 mph becoming north in the afternoon.

    Partly Sunny

    High: 49 °F

  • Tonight

    Tonight: Partly cloudy, with a low around 27. Northeast wind around 10 mph.

    Partly Cloudy

    Low: 27 °F

  • Sunday

    Sunday: A 30 percent chance of rain after 3pm.  Increasing clouds, with a high near 39. Northeast wind around 10 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Partly Sunny
    then Chance
    Rain

    High: 39 °F

  • Sunday
    Night

    Sunday Night: Rain and snow likely, becoming all snow after 2am.  Cloudy, with a low around 32. Northeast wind around 10 mph.  Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    Rain/Snow
    Likely

    Low: 32 °F

  • Monday

    Monday: A chance of rain and snow before 11am, then a chance of rain between 11am and 4pm, then a chance of rain and snow after 4pm.  Mostly cloudy, with a high near 39. North wind 5 to 10 mph becoming northwest in the afternoon.  Chance of precipitation is 50%.

    Chance
    Rain/Snow

    High: 39 °F

  • Monday
    Night

    Monday Night: A 30 percent chance of snow before 7pm.  Mostly cloudy, with a low around 24.

    Chance Snow
    then Mostly
    Cloudy

    Low: 24 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 29.

    Mostly Sunny

    High: 29 °F

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 18.

    Mostly Clear

    Low: 18 °F

  • Wednesday

    Wednesday: Sunny, with a high near 36.

    Sunny

    High: 36 °F

Detailed Forecast

Today
Partly sunny, with a high near 49. West wind 5 to 10 mph becoming north in the afternoon.
Tonight
Partly cloudy, with a low around 27. Northeast wind around 10 mph.
Sunday
A 30 percent chance of rain after 3pm. Increasing clouds, with a high near 39. Northeast wind around 10 mph. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Rain and snow likely, becoming all snow after 2am. Cloudy, with a low around 32. Northeast wind around 10 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
Monday
A chance of rain and snow before 11am, then a chance of rain between 11am and 4pm, then a chance of rain and snow after 4pm. Mostly cloudy, with a high near 39. North wind 5 to 10 mph becoming northwest in the afternoon. Chance of precipitation is 50%.
Monday Night
A 30 percent chance of snow before 7pm. Mostly cloudy, with a low around 24.
Tuesday
Mostly sunny, with a high near 29.
Tuesday Night
Mostly clear, with a low around 18.
Wednesday
Sunny, with a high near 36.
Wednesday Night
Partly cloudy, with a low around 26.
Thursday
Partly sunny, with a high near 42.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 31.
Friday
Rain or freezing rain likely. Cloudy, with a high near 45. Chance of precipitation is 60%.
Click Map For Forecast
Point Forecast:
Portsmouth NH
 43.07°N 70.78°W (Elev. 33 ft)
2:59 am EST Dec 15, 2018
4am EST Dec 15, 2018-6pm EST Dec 21, 2018
 
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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