My Profile
  1. Member Settings
  2. My Devices
  3. Sign Out
Log In
    Favorites
        More Settings
      Flood Watch
      until 12:00 AM EDT
      Elev 631 ft, 38.788 °N 82.978 °W

      Rosemount, OH

      Portsmouth Station70°
      Updated: 2:28 AM EDT on September 12, 2026 (GMT -4)
      5 minutes ago
      81°
      67°
      70
      Feels Like 71
      Fair
      N
      1
      Similar temperature is expected today
      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
        Fri 09/11
        Low 68°f
         15% Precip. / 0 in
        Partly cloudy. A stray shower or thunderstorm is possible. Low 68F. Winds light and variable.
        Tomorrow
        Sat 09/12
        High 79°f
         87% Precip. / 0.33 in
        Rain showers in the morning with numerous thunderstorms developing in the afternoon. High 79F. Winds light and variable. Chance of rain 90%. Localized flooding is possible.
        Tomorrow night
        Sat 09/12
        Low 68°f
         58% Precip. / 0.13 in
        Scattered thunderstorms in the evening, then variable clouds overnight with more showers at times. Low 68F. Winds light and variable. Chance of rain 60%. Localized flooding is possible.
        Hourly Forecast
        Now
        70°
        3AM
        70°
        4AM
        69°
        5AM
        69°
        6AM
        68°
        7AM
        68°
        7:10AM
        Sunrise
        8AM
        69°
        9AM
        71°
        10AM
        53%
        74°
        11AM
        51%
        76°
        12PM
        53%
        78°
        1PM
        51%
        78°
        2PM
        88%
        78°
        3PM
        76%
        77°
        4PM
        48%
        77°
        5PM
        52%
        78°
        6PM
        36%
        77°
        7PM
        53%
        77°
        7:45PM
        Sunset
        8PM
        58%
        74°
        9PM
        52%
        72°
        10PM
        50%
        71°
        11PM
        70°
        12AM
        70°
        1AM
        36%
        71°
        2AM
        70°
        Precipitation
        88%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        52
        Moderate
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.92 in
        2. Visibility 7 miles
        3. Clouds Partly Cloudy
        4. Dew Point69°F
        5. Humidity 97%
        6. Rainfall 0.01 in
        7. Snow Depth 0 in
         KPMH Station History
        Almanac for September 12, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 81°F 82°F 100°F 1983
        4. Low 67°F 58°F 38°F 1917
        5. Rain/Snow Depth
        6. Precipitation 0 in - in -
        7. Snow 0 in - in -
        Almanac for September 13, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 79°F 81°F 100°F
        4. Low 67°F 57°F 38°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:10 AM 7:44 PM
        3. Civil Twilight 6:44 AM 8:11 PM
        4. Nautical Twilight 6:12 AM 8:43PM
        5. Astronomical Twilight 5:39 AM 9:15 PM
        1. Length of Visible Light 13h 27m
        2. Length of Day 12h 34m
        3. Tomorrow will be 2 minutes 29 seconds shorter
        1. Moon 8:46 AM 8:19 PM
        2. Waxing Crescent2% of the Moon is Illuminated
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Precipitation
        Loading…
        Health
        Loading…
        Weather Alerts
        Loading…
        Our AppsAbout UsContactCareersWeather Data APIs
        PWS NetworkWundermap
        Terms of UsePrivacy PolicyCookie NoticeAccessibility StatementAdChoicesData Vendors
        essentialaccessibility.com
        We recognize our responsibility to use data and technology for good. We may use or share your data with our data vendors. Take control of your data.
        Review All Privacy and Ad Settings
        Choose how my information is shared
        Data Rights
        The Weather Company The Weather Channel Weather Underground Storm Radar
        © The Weather Company, LLC 2026
        Glossary