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      Elev 2907 ft, 47.797 °N 114.307 °W

      Big Arm, MT

      Big Arm Station54°
      Updated: 2:59 PM MDT on October 25, 2026 (GMT -6)
      7 minutes ago
      53°
      33°
      54
      Feels Like 54
      Sunny
      N
      8
      Lower temperature is expected tomorrow
      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 53°f
         1% Precip. / 0 in
        Sun and clouds mixed. High 53F. Winds NNE at 5 to 10 mph.
        Tonight
        Mon 10/26
        Low 31°f
         4% Precip. / 0 in
        Partly cloudy this evening with more clouds for overnight. Low 31F. Winds light and variable.
        Tomorrow
        Tue 10/27
        High 48°f36°f
         10% Precip. / 0 in
        Cloudy early with partial sunshine expected late. High 48F. Winds light and variable.
        Hourly Forecast
        Now
        53°
        3PM
        52°
        4PM
        53°
        5PM
        53°
        6PM
        48°
        6:30PM
        Sunset
        7PM
        45°
        8PM
        42°
        9PM
        40°
        10PM
        38°
        11PM
        37°
        12AM
        36°
        1AM
        35°
        2AM
        34°
        3AM
        34°
        4AM
        33°
        5AM
        33°
        6AM
        32°
        7AM
        32°
        8AM
        32°
        8:12AM
        Sunrise
        9AM
        33°
        10AM
        36°
        11AM
        38°
        12PM
        39°
        1PM
        41°
        2PM
        43°
        Precipitation
        5%
        Pollen
        None
        Air Quality
        19
        Good
        UV Index
        2
        Low
        Additional Conditions
        1. Pressure 30.19 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point33°F
        5. Humidity 47%
        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 53°F 49°F 74°F 1955
        4. Low 33°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 48°F 49°F 71°F
        4. Low 31°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 12 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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