Water Temperature of the South Fork Flathead River in Columbia Falls, MT

Current Water Temperature

55.8°F

Measurement Time: Wednesday, July 8, 2026, 4:45 AM MDT

Temperature Locations

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Local Points of Interest

Hungry Horse, MT

South Fork Flathead River

Station Name: S F Flathead River nr Columbia Falls MT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 3,091 feet

Nearest Address:
Columbia Falls, MT 59912
Flathead County

GPS Coordinates: 48.35657778, -114.0378583

Nearby Water Temperatures

Birch Creek, Valier, MT (78.9 mi)
Clark Fork River, Superior, MT (89.4 mi)
Kootenai River, Troy, MT (93.7 mi)
Clark Fork, East Missoula, MT (102.4 mi)
Kootenai River, Bonners Ferry, ID (106.7 mi)
Kootenai River, Bonners Ferry, ID (111.3 mi)
Sun River, Simms, MT (114 mi)
Kootenai River, Copeland, ID (114.4 mi)
Kootenai River, Porthill, ID (121 mi)
North Fork Clearwater River, Pierce, ID (128.1 mi)
Missouri River, Wolf Creek, MT (133.2 mi)
Pend Oreille River, Metaline Falls, WA (157.3 mi)
Pend Oreille River, Metaline Falls, WA (157.6 mi)
Warm Springs Creek, Warm Springs, MT (161.4 mi)
Marias River, Loma, MT (161.8 mi)

Weather for Columbia Falls, Montana

Current Weather

66.9°F
Sunny
Sunny
66.9°F
79.7°F
59%
SW 4.7 mph
5.4 mph
81.7°F
45.9°F
0 in
0%
9 mi
1017 mbar
5.5

Five Day Weather Forecast

Sunny
Wed
H: 89°F
L: 46°F
Sunny
Thu
H: 78°F
L: 46°F
Sunny
Fri
H: 83°F
L: 46°F
Sunny
Sat
H: 84°F
L: 49°F
Sunny
Sun
H: 79°F
L: 49°F

Air Quality

AQI: 1 - Good
PM2.5: 3.1 μg/m3
PM10: 4.3 μg/m3
Carbon Monoxide: 108 μg/m3
Nitrogen Dioxide: 0.7 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 107 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 1:41 PM
Sunset: 9:38 PM
Daylight: 15 hrs 53 mins
Moonrise: 12:51 AM
Moon Transit: 8:00 AM
Moonset: 3:29 PM
Moon Phase: Last Quarter
Moon Illumination: 26.8%

Best Times for Fishing or Hunting

Major Periods

7:30 AM - 10:00 AM
4:37 PM - 7:07 PM

Minor Periods

2:59 PM - 4:29 PM
12:21 AM - 1:51 AM

Action Rating: 2 out of 5

Special Weather Statement issued July 8 at 5:50AM MDT by NWS Great Falls MT

Effective: Wed July 8, 2026, 5:50 AM
Expires: Wed July 8, 2026, 8:00 AM

Locally dense fog developed overnight along the US 2 Corridor, bringing visibility to under a mile for most of the area, with a few spots seeing visibility dip below a quarter mile. If you will be traveling this morning before 8am, be prepared for reduced visibility, and ensure your headlights are on so you are more visible to others on the roads.
Wednesday, July 8, 2026

Weather Forecast

Sunny
88.5°F
45.9°F
72.8°F
34%
0 in
1%
0%
15.4 mph
8.2


Air Quality

AQI: 1 - Good
PM2.5: 3.62 μg/m3
PM10: 4.64 μg/m3
Carbon Monoxide: 109.08 μg/m3
Nitrogen Dioxide: 3.66 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 97.54 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 1:41 PM
Sunset: 9:38 PM
Daylight: 15 hrs 53 mins
Moonrise: 12:51 AM
Moon Transit: 8:00 AM
Moonset: 3:29 PM
Moon Phase: Last Quarter
Moon Illumination: 26.8%

Best Times for Fishing or Hunting

Major Periods

7:30 AM - 10:00 AM
4:37 PM - 7:07 PM

Minor Periods

2:59 PM - 4:29 PM
12:21 AM - 1:51 AM

Action Rating: 2 out of 5

Thursday, July 9, 2026

Weather Forecast

Sunny
78.2°F
46.2°F
62.9°F
47%
0 in
2%
0%
13.9 mph
8.4


Air Quality

AQI: 1 - Good
PM2.5: 2.37 μg/m3
PM10: 2.62 μg/m3
Carbon Monoxide: 105.58 μg/m3
Nitrogen Dioxide: 2.75 μg/m3
Sulphur Dioxide: 0.29 μg/m3
Ozone: 86.46 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 1:41 PM
Sunset: 9:37 PM
Daylight: 15 hrs 52 mins
Moonrise: 1:11 AM
Moon Transit: 8:52 AM
Moonset: 4:54 PM
Moon Phase: Last Quarter
Moon Illumination: 17.4%

Best Times for Fishing or Hunting

Major Periods

8:22 AM - 10:52 AM
5:31 PM - 8:01 PM

Minor Periods

4:24 PM - 5:54 PM
12:41 AM - 2:11 AM

Action Rating: 2 out of 5

Friday, July 10, 2026

Weather Forecast

Sunny
82.8°F
45.6°F
64.3°F
46%
0 in
1%
0%
12.8 mph
9


Air Quality

AQI: 1 - Good
PM2.5: 1.87 μg/m3
PM10: 2.13 μg/m3
Carbon Monoxide: 108.54 μg/m3
Nitrogen Dioxide: 3.04 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 79.71 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 1:41 PM
Sunset: 9:36 PM
Daylight: 15 hrs 50 mins
Moonrise: 1:39 AM
Moon Transit: 9:50 AM
Moonset: 6:19 PM
Moon Phase: Waning Crescent
Moon Illumination: 9.7%

Best Times for Fishing or Hunting

Major Periods

6:30 PM - 9:00 PM
9:20 AM - 11:50 AM

Minor Periods

5:49 PM - 7:19 PM
1:09 AM - 2:39 AM

Action Rating: 2 out of 5

Saturday, July 11, 2026

Weather Forecast

Sunny
84°F
48.6°F
66.3°F
44%
0 in
1%
0%
14.5 mph
9.4


Air Quality

AQI: 1 - Good
PM2.5: 2.78 μg/m3
PM10: 3.46 μg/m3
Carbon Monoxide: 108.28 μg/m3
Nitrogen Dioxide: 3.84 μg/m3
Sulphur Dioxide: 0.28 μg/m3
Ozone: 85.21 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:41 PM
Sunset: 9:36 PM
Daylight: 15 hrs 49 mins
Moonrise: 2:17 AM
Moon Transit: 10:53 AM
Moonset: 7:40 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

7:35 PM - 10:05 PM
10:23 AM - 12:53 AM

Minor Periods

7:10 PM - 8:40 PM
1:47 AM - 3:17 AM

Action Rating: 3 out of 5

Sunday, July 12, 2026

Weather Forecast

Sunny
79.1°F
49.1°F
64.4°F
39%
0 in
1%
0%
8.9 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 4.99 μg/m3
PM10: 6.09 μg/m3
Carbon Monoxide: 136.14 μg/m3
Nitrogen Dioxide: 9.94 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 66.29 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:41 PM
Sunset: 9:35 PM
Daylight: 15 hrs 47 mins
Moonrise: 3:11 AM
Moon Transit: 12:00 AM
Moonset: 8:48 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

8:42 PM - 11:12 PM
11:30 AM - 2:00 PM

Minor Periods

8:18 PM - 9:48 PM
2:41 AM - 4:11 AM

Action Rating: 3 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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