Weather for Waterloo, Montana
Current Weather
Humidity: 27%
Feels Like: 51.6°F
Wind: SSW 5.4 mph
Wind Gusts: 11.3 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast
Thu
H: 64°F
L: 35°F
Fri
H: 65°F
L: 26°F
Sat
H: 55°F
L: 32°F
Sun
H: 39°F
L: 25°F
Mon
H: 43°F
L: 22°F
Air Quality
Nitrogen Dioxide: 12.85 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 41 μg/m3
Astronomical
Sun Transit: 1:13 PM
Sunset: 6:29 PM
Daylight: 10 hrs 32 mins
Moon Transit: 2:49 PM
Moonset: 7:05 PM
Moon Phase: New
Moon Illumination: 1.7%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM2:19 PM - 4:49 PM
Minor Periods
6:35 PM - 8:05 PM9:58 AM - 11:28 AM
Action Rating: 4 out of 5
High Wind Watch issued October 23 at 1:03PM MDT until October 25 at 9:00PM MDT by NWS Great Falls MT
Effective: Thu October 23, 2025, 1:03 PM
Expires: Fri October 24, 2025, 6:15 AM
* WHAT...South winds 30 to 40 mph with gusts up to 60 mph possible. * WHERE...The Interstate 90 Corridor between Bozeman and Whitehall, and Beaverhead and Western Madison below 6000ft. * WHEN...From late Saturday morning through early Saturday evening. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Any showers that develop Saturday afternoon will assist in mixing stronger gusts to the surface.
Monitor the latest forecasts and warnings for updates. Remember, a High Wind Watch means that there is at least a 50% chance of 40 mph sustained winds or 58 mph wind gusts occurring during the watch period.
High Wind Watch issued October 23 at 12:36AM MDT until October 25 at 9:00PM MDT by NWS Great Falls MT
Effective: Thu October 23, 2025, 12:36 AM
Expires: Thu October 23, 2025, 6:00 PM
* WHAT...South winds 30 to 40 mph, with gusts up to 60 mph possible. * WHERE...Madison River Valley. * WHEN...From Saturday morning through Saturday evening. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles.
Monitor the latest forecasts and warnings for updates.
High Wind Watch issued October 23 at 1:03PM MDT until October 25 at 9:00PM MDT by NWS Great Falls MT
Effective: Thu October 23, 2025, 1:03 PM
Expires: Fri October 24, 2025, 6:15 AM
* WHAT...South winds 30 to 40 mph, with gusts up to 60 mph possible. * WHERE...Madison River Valley. * WHEN...From Saturday morning through Saturday evening. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Any showers that develop Saturday afternoon will assist in mixing stronger gusts to the surface.
Monitor the latest forecasts and warnings for updates.
Weather Forecast
Average Temperature: 49.2°F
Average Humidity: 37%
Wind: 9.2 mph
UV Index: 0.7
Air Quality
Nitrogen Dioxide: 6.98 μg/m3
Sulphur Dioxide: 1.2 μg/m3
Ozone: 60.48 μg/m3
Astronomical
Sun Transit: 1:13 PM
Sunset: 6:29 PM
Daylight: 10 hrs 32 mins
Moon Transit: 2:49 PM
Moonset: 7:05 PM
Moon Phase: New
Moon Illumination: 1.7%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM2:19 PM - 4:49 PM
Minor Periods
6:35 PM - 8:05 PM9:58 AM - 11:28 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 46.2°F
Average Humidity: 40%
Wind: 17 mph
UV Index: 0.7
Air Quality
Nitrogen Dioxide: 7.44 μg/m3
Sulphur Dioxide: 1.2 μg/m3
Ozone: 63.04 μg/m3
Astronomical
Sun Transit: 1:12 PM
Sunset: 6:27 PM
Daylight: 10 hrs 29 mins
Moon Transit: 3:38 PM
Moonset: 7:39 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.8%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM3:08 PM - 5:38 PM
Minor Periods
7:09 PM - 8:39 PM11:03 AM - 12:33 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 41.6°F
Average Humidity: 60%
Wind: 28.6 mph
UV Index: 0.5
Air Quality
Nitrogen Dioxide: 3.72 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 71.64 μg/m3
Astronomical
Sun Transit: 1:12 PM
Sunset: 6:26 PM
Daylight: 10 hrs 26 mins
Moon Transit: 4:29 PM
Moonset: 8:22 PM
Moon Phase: Waxing Crescent
Moon Illumination: 12.2%
Best Times for Fishing or Hunting
Major Periods
12:30 AM - 3:00 AM3:59 PM - 6:29 PM
Minor Periods
7:52 PM - 9:22 PM12:05 AM - 1:35 PM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 32.5°F
Average Humidity: 66%
Wind: 20.6 mph
UV Index: 0.5
Air Quality
Nitrogen Dioxide: 2.18 μg/m3
Sulphur Dioxide: 1.17 μg/m3
Ozone: 82.16 μg/m3
Astronomical
Sun Transit: 1:12 PM
Sunset: 6:24 PM
Daylight: 10 hrs 23 mins
Moon Transit: 5:21 PM
Moonset: 9:14 PM
Moon Phase: Waxing Crescent
Moon Illumination: 20.5%
Best Times for Fishing or Hunting
Major Periods
1:21 AM - 3:51 AM4:51 PM - 7:21 PM
Minor Periods
8:44 PM - 10:14 PM12:59 AM - 2:29 PM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 30.8°F
Average Humidity: 48%
Wind: 17.2 mph
UV Index: 0.5
Air Quality
Nitrogen Dioxide: 3.2 μg/m3
Sulphur Dioxide: 1 μg/m3
Ozone: 75.23 μg/m3
Astronomical
Sun Transit: 1:12 PM
Sunset: 6:22 PM
Daylight: 10 hrs 20 mins
Moon Transit: 6:13 PM
Moonset: 10:17 PM
Moon Phase: Waxing Crescent
Moon Illumination: 30.3%
Best Times for Fishing or Hunting
Major Periods
2:13 AM - 4:43 AM5:43 PM - 8:13 PM
Minor Periods
9:47 PM - 11:17 PM1:44 PM - 3:14 PM
Action Rating: 2 out of 5