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

Current Water Temperature

55.6°F

Measurement Time: Friday, July 17, 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

88°F
Partly cloudy
Partly cloudy
85.9°F
91.9°F
41%
ESE 9.2 mph
13.5 mph
92.8°F
55.4°F
0 in
50%
9 mi
1013 mbar
0.2

Five Day Weather Forecast

Sunny
Fri
H: 96°F
L: 65°F
Sunny
Sat
H: 89°F
L: 52°F
Sunny
Sun
H: 85°F
L: 48°F
Sunny
Mon
H: 86°F
L: 47°F
Partly Cloudy
Tue
H: 89°F
L: 56°F

Air Quality

AQI: 1 - Good
PM2.5: 5.6 μg/m3
PM10: 7.5 μg/m3
Carbon Monoxide: 96 μg/m3
Nitrogen Dioxide: 1.1 μg/m3
Sulphur Dioxide: 0.1 μg/m3
Ozone: 92 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

yellow watch - severe thunderstorm - in effect

Effective: Fri July 17, 2026, 12:13 PM
Expires: Sat July 18, 2026, 3:16 AM

Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts, large hail and heavy rain. There is also a chance of a funnel cloud this evening. ### Driving conditions may be difficult. Damage to roofs, fences, branches or soft shelters is possible. Severe thunderstorm watches are issued when conditions are favourable for the development of thunderstorms capable of producing damaging hail, wind or rain. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to BCstorm@ec.gc.ca or post reports on X using #BCStorm.

When thunder roars, go indoors! Lightning kills and injures Canadians every year.
Friday, July 17, 2026

Weather Forecast

Sunny
95.5°F
64.9°F
81.5°F
40%
0 in
2%
0%
9.2 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 6.84 μg/m3
PM10: 8.01 μg/m3
Carbon Monoxide: 99.71 μg/m3
Nitrogen Dioxide: 5.69 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 71.5 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
88.8°F
52.3°F
73.1°F
54%
0 in
3%
0%
10.5 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 4.4 μg/m3
PM10: 5.3 μg/m3
Carbon Monoxide: 104.63 μg/m3
Nitrogen Dioxide: 5.02 μg/m3
Sulphur Dioxide: 0.18 μg/m3
Ozone: 71.17 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
85.1°F
48°F
66.7°F
36%
0 in
1%
0%
12.8 mph
8.7


Air Quality

AQI: 1 - Good
PM2.5: 3.09 μg/m3
PM10: 3.58 μg/m3
Carbon Monoxide: 111.17 μg/m3
Nitrogen Dioxide: 2.92 μg/m3
Sulphur Dioxide: 0.29 μg/m3
Ozone: 98.63 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
86.3°F
46.7°F
67.1°F
52%
0 in
2%
0%
5.1 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 2.38 μg/m3
PM10: 2.83 μg/m3
Carbon Monoxide: 129.54 μg/m3
Nitrogen Dioxide: 4.12 μg/m3
Sulphur Dioxide: 0.32 μg/m3
Ozone: 99.79 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

Tuesday, July 21, 2026

Weather Forecast

Partly Cloudy
89.4°F
56°F
72.4°F
50%
0 in
3%
0%
4.5 mph
9.2


Air Quality

AQI: 1 - Good
PM2.5: 1.47 μg/m3
PM10: 1.61 μg/m3
Carbon Monoxide: 147.57 μg/m3
Nitrogen Dioxide: 5.97 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 64.43 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 1:42 PM
Sunset: 9:27 PM
Daylight: 15 hrs 29 mins
Moonrise: 2:59 PM
Moon Transit: 7:45 PM
Moonset: 12:04 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

3:35 AM - 6:05 AM
7:15 PM - 9:45 PM

Minor Periods

2:29 PM - 3:59 PM
12:00 AM - 12:00 AM

Action Rating: 4 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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