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      Elev 2907 ft, 47.797 °N 114.307 °W

      Big Arm, MT

      Big Arm Station53°
      Updated: 2:32 PM MDT on October 25, 2026 (GMT -6)
      20 seconds ago
      54°
      34°
      53
      Feels Like 53
      Fair
      N
      8
      Same temperature is expected today
      Wundermap

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       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
        Today
        Mon 10/26
        High 54°f
         1% Precip. / 0 in
        Sun and clouds mixed. High 54F. Winds NNE at 5 to 10 mph.
        Tonight
        Mon 10/26
        Low 32°f
         4% Precip. / 0 in
        Partly to mostly cloudy. Low 32F. Winds light and variable.
        Tomorrow
        Tue 10/27
        High 49°f37°f
         10% Precip. / 0 in
        Cloudy early with partial sunshine expected late. High 49F. Winds light and variable.
        Hourly Forecast
        Now
        52°
        3PM
        52°
        4PM
        53°
        5PM
        53°
        6PM
        48°
        6:30PM
        Sunset
        7PM
        45°
        8PM
        42°
        9PM
        40°
        10PM
        39°
        11PM
        38°
        12AM
        37°
        1AM
        36°
        2AM
        35°
        3AM
        35°
        4AM
        34°
        5AM
        33°
        6AM
        33°
        7AM
        33°
        8AM
        33°
        8:12AM
        Sunrise
        9AM
        34°
        10AM
        37°
        11AM
        39°
        12PM
        40°
        1PM
        42°
        2PM
        44°
        Precipitation
        5%
        Pollen
        None
        Air Quality
        17
        Good
        UV Index
        2
        Low
        Additional Conditions
        1. Pressure 30.2 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point33°F
        5. Humidity 48%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KGPI Station History
        Almanac for October 25, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 54°F 49°F 74°F 1955
        4. Low 34°F 31°F 1°F 2020
        5. Rain/Snow Depth
        6. Precipitation 0 in 4.1 in -
        7. Snow 0 in 0 in -
        Almanac for October 26, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 49°F 49°F 71°F
        4. Low 32°F 31°F 0°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 8:11 AM 6:30 PM
        3. Civil Twilight 7:39 AM 7:02 PM
        4. Nautical Twilight 7:03 AM 7:38PM
        5. Astronomical Twilight 6:27 AM 8:14 PM
        1. Length of Visible Light 11h 22m
        2. Length of Day 10h 19m
        3. Tomorrow will be 3 minutes 13 seconds shorter
        1. Moon 5:54 PM 7:43 AM
        2. Full99% of the Moon is Illuminated
        Oct 25
        Full Moon
        Nov 1
        Waning Half Last Qtr
        Nov 9
        New Moon
        Nov 17
        Waxing Half First Qtr
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