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

Current Water Temperature

54.7°F

Measurement Time: Thursday, July 16, 2026, 12:45 PM 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

87.1°F
Sunny
Sunny
83.6°F
90.5°F
31%
WSW 2.2 mph
2.3 mph
93.2°F
49.7°F
0 in
0%
9 mi
1012 mbar
2.3

Five Day Weather Forecast

Sunny
Thu
H: 95°F
L: 54°F
Sunny
Fri
H: 93°F
L: 55°F
Sunny
Sat
H: 90°F
L: 54°F
Sunny
Sun
H: 87°F
L: 50°F
Sunny
Mon
H: 86°F
L: 48°F

Air Quality

AQI: 1 - Good
PM2.5: 3.5 μg/m3
PM10: 4.3 μg/m3
Carbon Monoxide: 97 μg/m3
Nitrogen Dioxide: 0.3 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 101 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:42 PM
Sunset: 9:32 PM
Daylight: 15 hrs 40 mins
Moonrise: 8:42 AM
Moon Transit: 4:00 PM
Moonset: 11:01 PM
Moon Phase: New
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:30 PM - 6:00 PM

Minor Periods

12:00 AM - 12:00 AM
8:12 AM - 9:42 AM

Action Rating: 3 out of 5

orange warning - severe thunderstorm - ended

Effective: Thu July 16, 2026, 4:17 PM
Expires: Thu July 16, 2026, 5:17 PM

Severe thunderstorms associated with this alert have weakened or moved out of the area. ###


orange warning - severe thunderstorm - ended

Effective: Thu July 16, 2026, 4:17 PM
Expires: Thu July 16, 2026, 5:17 PM

Severe thunderstorms associated with this alert have weakened or moved out of the area. ###


orange warning - severe thunderstorm - in effect

Effective: Thu July 16, 2026, 3:58 PM
Expires: Thu July 16, 2026, 6:56 PM

At 3:57 p.m. MDT, Environment Canada meteorologists are tracking a dangerous thunderstorm capable of producing damaging wind gusts, golf ball to tennis ball size hail and heavy rain. The severe thunderstorm is located near Hill Spring and is moving towards the northeast at 20 km/h. ### Severe thunderstorm warnings are issued when imminent or occurring thunderstorms are expected to produce damaging hail, wind or rain.

Take immediate cover if a thunderstorm approaches. If outside, protect yourself from flying debris and hail.


orange warning - severe thunderstorm - in effect

Effective: Thu July 16, 2026, 3:58 PM
Expires: Thu July 16, 2026, 6:56 PM

At 3:57 p.m. MDT, Environment Canada meteorologists are tracking a dangerous thunderstorm capable of producing damaging wind gusts, golf ball to tennis ball size hail and heavy rain. ### Severe thunderstorm warnings are issued when imminent or occurring thunderstorms are expected to produce damaging hail, wind or rain.

Take immediate cover if a thunderstorm approaches. If outside, protect yourself from flying debris and hail.
Thursday, July 16, 2026

Weather Forecast

Sunny
94.5°F
54°F
77.2°F
43%
0 in
1%
0%
5.6 mph
8.5


Air Quality

AQI: 1 - Good
PM2.5: 6.11 μg/m3
PM10: 7.26 μg/m3
Carbon Monoxide: 100.67 μg/m3
Nitrogen Dioxide: 5.22 μg/m3
Sulphur Dioxide: 0.26 μg/m3
Ozone: 72.79 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:42 PM
Sunset: 9:32 PM
Daylight: 15 hrs 40 mins
Moonrise: 8:42 AM
Moon Transit: 4:00 PM
Moonset: 11:01 PM
Moon Phase: New
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:30 PM - 6:00 PM

Minor Periods

12:00 AM - 12:00 AM
8:12 AM - 9:42 AM

Action Rating: 3 out of 5

Friday, July 17, 2026

Weather Forecast

Sunny
93.1°F
54.9°F
75.6°F
52%
0.02 in
36%
0%
9.6 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 4.33 μg/m3
PM10: 5.27 μg/m3
Carbon Monoxide: 99.71 μg/m3
Nitrogen Dioxide: 5.34 μg/m3
Sulphur Dioxide: 0.18 μg/m3
Ozone: 67.08 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:42 PM
Sunset: 9:31 PM
Daylight: 15 hrs 37 mins
Moonrise: 10:04 AM
Moon Transit: 4:49 PM
Moonset: 12:01 AM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

12:36 AM - 3:06 AM
4:19 PM - 6:49 PM

Minor Periods

9:34 AM - 11:04 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Saturday, July 18, 2026

Weather Forecast

Sunny
89.7°F
53.5°F
70.4°F
59%
0 in
5%
0%
11 mph
9.2


Air Quality

AQI: 1 - Good
PM2.5: 4.05 μg/m3
PM10: 5.2 μg/m3
Carbon Monoxide: 104.63 μg/m3
Nitrogen Dioxide: 4.75 μg/m3
Sulphur Dioxide: 0.23 μg/m3
Ozone: 82.83 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:42 PM
Sunset: 9:30 PM
Daylight: 15 hrs 35 mins
Moonrise: 11:21 AM
Moon Transit: 5:34 PM
Moonset: 12:17 AM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

1:23 AM - 3:53 AM
5:04 PM - 7:34 PM

Minor Periods

10:51 AM - 12:21 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, July 19, 2026

Weather Forecast

Sunny
87°F
49.7°F
68.2°F
37%
0 in
1%
0%
13 mph
8.9


Air Quality

AQI: 1 - Good
PM2.5: 3.88 μg/m3
PM10: 4.61 μg/m3
Carbon Monoxide: 111.58 μg/m3
Nitrogen Dioxide: 3.48 μg/m3
Sulphur Dioxide: 0.32 μg/m3
Ozone: 100.58 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 1:42 PM
Sunset: 9:29 PM
Daylight: 15 hrs 33 mins
Moonrise: 12:35 AM
Moon Transit: 6:18 PM
Moonset: 12:33 AM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

2:08 AM - 4:38 AM
5:48 PM - 8:18 PM

Minor Periods

12:05 AM - 1:35 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Monday, July 20, 2026

Weather Forecast

Sunny
85.6°F
48.2°F
67°F
54%
0 in
3%
0%
6.9 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 4.01 μg/m3
PM10: 4.4 μg/m3
Carbon Monoxide: 144 μg/m3
Nitrogen Dioxide: 11.33 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 75.43 μg/m3

Astronomical

Sunrise: 5:57 AM
Sun Transit: 1:42 PM
Sunset: 9:28 PM
Daylight: 15 hrs 31 mins
Moonrise: 1:47 PM
Moon Transit: 7:01 PM
Moonset: 12:48 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

2:51 AM - 5:21 AM
6:31 PM - 9:01 PM

Minor Periods

1:17 PM - 2:47 PM
12:00 AM - 12:00 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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