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      Yellow Advisory - Frost
      until 9:30 AM EDT
      Elev 53 ft, 45.462 °N 75.645 °W

      Ottawa, CA

      Ottawa / Rockcliffe Airport Station48°
      Updated: 10:55 PM EDT on September 21, 2026 (GMT -4)
      6 minutes ago
      65°
      43°
      48
      Feels Like 46
      Partly Cloudy
      N
      6
      Similar temperature is expected tomorrow
      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
        Mon 09/21
        Low 40°f
         3% Precip. / 0 in
        Partly cloudy. Low around 40F. Winds light and variable.
        Tomorrow
        Tue 09/22
        High 64°f
         5% Precip. / 0 in
        Some clouds in the morning will give way to mainly sunny skies for the afternoon. High 64F. Winds NE at 5 to 10 mph.
        Tomorrow night
        Tue 09/22
        Low 42°f
         7% Precip. / 0 in
        A mostly clear sky. Low 42F. Winds light and variable.
        Hourly Forecast
        Now
        48°
        11PM
        48°
        12AM
        47°
        1AM
        46°
        2AM
        44°
        3AM
        43°
        4AM
        43°
        5AM
        42°
        6AM
        41°
        6:49AM
        Sunrise
        7AM
        42°
        8AM
        44°
        9AM
        48°
        10AM
        52°
        11AM
        56°
        12PM
        58°
        1PM
        60°
        2PM
        62°
        3PM
        62°
        4PM
        63°
        5PM
        62°
        6PM
        60°
        6:59PM
        Sunset
        7PM
        56°
        8PM
        53°
        9PM
        51°
        10PM
        50°
        Precipitation
        5%
        Pollen
        None
        Air Quality
        24
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.34 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point39°F
        5. Humidity 69%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         CYRO Station History
        Almanac for September 22, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 65°F 67°F 82°F 2019
        4. Low 43°F 48°F 36°F 2020
        5. Rain/Snow Depth
        6. Precipitation 0 in - in -
        7. Snow 0 in - in -
        Almanac for September 23, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 64°F 67°F 83°F
        4. Low 43°F 47°F 38°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:49 AM 6:59 PM
        3. Civil Twilight 6:20 AM 7:29 PM
        4. Nautical Twilight 5:45 AM 8:04PM
        5. Astronomical Twilight 5:09 AM 8:39 PM
        1. Length of Visible Light 13h 9m
        2. Length of Day 12h 10m
        3. Tomorrow will be 3 minutes 9 seconds shorter
        1. Moon 5:21 PM 2:05 AM
        2. Waxing Gibbous85% of the Moon is Illuminated
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Precipitation
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