My Profile
  1. Member Settings
  2. My Devices
  3. Sign Out
Log In
    Favorites
        More Settings
      Elev 256 ft, 42.899 °N 71.482 °W

      Merrimack, NH

      5 Deer Run Station59°
      Updated: 3:20 PM EDT on September 27, 2026 (GMT -4)
      7 minutes ago
      60°
      54°
      59
      Feels Like 59
      Fog
      N
      12
      Gusts 25 mph
      Similar temperature is expected tomorrow
      Wundermap
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Radar · Now
        Hyper-local data from Weather Underground's network of
        400,000+ personal weather stations worldwide
        Tonight
        Sun 09/27
        Low 53°f
         68% Precip. / 0.18 in
        Overcast with showers at times. Low 53F. Winds NE at 10 to 20 mph. Chance of rain 70%. Localized flooding is possible.
        Tomorrow
        Mon 09/28
        High 56°f
         99% Precip. / 0.71 in
        Cloudy with periods of rain. High 56F. Winds NNE at 10 to 15 mph. Chance of rain 100%. Rainfall around a half an inch.
        Tomorrow night
        Mon 09/28
        Low 52°f
         95% Precip. / 0.31 in
        Rain early...then remaining cloudy with showers late. Low 52F. Winds NNW at 5 to 10 mph. Chance of rain 100%. Rainfall around a quarter of an inch.
        Hourly Forecast
        Now
        59°
        4PM
        64%
        59°
        5PM
        59°
        6PM
        58°
        6:33PM
        Sunset
        7PM
        57°
        8PM
        57°
        9PM
        56°
        10PM
        36%
        56°
        11PM
        53%
        56°
        12AM
        38%
        55°
        1AM
        34%
        55°
        2AM
        33%
        55°
        3AM
        38%
        55°
        4AM
        49%
        55°
        5AM
        55%
        54°
        6AM
        68%
        55°
        6:39AM
        Sunrise
        7AM
        77%
        54°
        8AM
        77%
        54°
        9AM
        81%
        55°
        10AM
        80%
        55°
        11AM
        88%
        55°
        12PM
        73%
        55°
        1PM
        70%
        55°
        2PM
        99%
        55°
        3PM
        99%
        55°
        Precipitation
        99%
        Rain ending around 4:30 PM
        Pollen
        None
        Air Quality
        30
        Good
        UV Index
        1
        Low
        Additional Conditions
        1. Pressure 29.89 in
        2. Visibility 1.5 miles
        3. Clouds Cloudy
        4. Dew Point55°F
        5. Humidity 88%
        6. Rainfall 0.57 in
        7. Snow Depth 0 in
         KMHT Station History
        Almanac for September 27, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 60°F 71°F 90°F 2017
        4. Low 54°F 47°F 24°F 1947
        5. Rain/Snow Depth
        6. Precipitation 0.18 in 2.9 in -
        7. Snow 0 in 0 in -
        Almanac for September 28, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 56°F 70°F 90°F
        4. Low 54°F 46°F 23°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:38 AM 6:34 PM
        3. Civil Twilight 6:10 AM 7:02 PM
        4. Nautical Twilight 5:37 AM 7:35PM
        5. Astronomical Twilight 5:04 AM 8:08 PM
        1. Length of Visible Light 12h 51m
        2. Length of Day 11h 55m
        3. Tomorrow will be 2 minutes 54 seconds shorter
        1. Moon 6:45 PM 7:41 AM
        2. Waning Gibbous97% of the Moon is Illuminated
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Oct 26
        Full Moon
        Nearby Weather Stations
        Station Location
        Temp
        Windchill
        Heat Index
        Dew Point
        Humidity
        Wind
        Precip.
        Elev.
        Updated
        Loading nearby stations…
        Precipitation
        Loading…
        Health
        Loading…
        Weather Alerts
        Loading…
        Our AppsAbout UsContactCareers
        PWS NetworkWunderMap
        Trust CenterTerms of UsePrivacy PolicyData RightsPrivacy SettingsCookie NoticeData VendorsAccessibility Statement
        Level Access
        The Weather Company The Weather Channel Weather Underground Storm Radar
        © The Weather Company, LLC 2026
        Glossary