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

Current Water Temperature

43.5°F

Measurement Time: Thursday, May 14, 2026, 3:45 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)
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)
Orofino River, Orofino, ID (166.1 mi)

Weather for Columbia Falls, Montana

Current Weather

53.1°F
Overcast
Overcast
50.3°F
50°F
54%
SW 8.5 mph
9.8 mph
45.3°F
36.5°F
0 in
100%
9 mi
1014 mbar
2

Five Day Weather Forecast

Moderate rain
Thu
H: 60°F
L: 35°F
Patchy rain nearby
Fri
H: 53°F
L: 35°F
Moderate rain
Sat
H: 51°F
L: 30°F
Patchy rain nearby
Sun
H: 52°F
L: 30°F
Patchy rain nearby
Mon
H: 54°F
L: 27°F

Air Quality

AQI: 1 - Good
PM2.5: 2.75 μg/m3
PM10: 3.15 μg/m3
Carbon Monoxide: 131.85 μg/m3
Nitrogen Dioxide: 1.35 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 93 μg/m3

Astronomical

Sunrise: 5:57 AM
Sun Transit: 1:32 PM
Sunset: 9:09 PM
Daylight: 15 hrs 11 mins
Moonrise: 4:26 AM
Moon Transit: 11:31 AM
Moonset: 6:56 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

8:08 PM - 10:38 PM
11:01 AM - 1:31 PM

Minor Periods

6:26 PM - 7:56 PM
3:56 AM - 5:26 AM

Action Rating: 2 out of 5

Thursday, May 14, 2026

Weather Forecast

Moderate rain
59.7°F
35°F
50.3°F
57%
0.46 in
88%
0%
12.3 mph
6.8


Air Quality

AQI: 1 - Good
PM2.5: 1.75 μg/m3
PM10: 1.85 μg/m3
Carbon Monoxide: 138.25 μg/m3
Nitrogen Dioxide: 1.79 μg/m3
Sulphur Dioxide: 1.08 μg/m3
Ozone: 81.88 μg/m3

Astronomical

Sunrise: 5:57 AM
Sun Transit: 1:32 PM
Sunset: 9:09 PM
Daylight: 15 hrs 11 mins
Moonrise: 4:26 AM
Moon Transit: 11:31 AM
Moonset: 6:56 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

8:08 PM - 10:38 PM
11:01 AM - 1:31 PM

Minor Periods

6:26 PM - 7:56 PM
3:56 AM - 5:26 AM

Action Rating: 2 out of 5

Friday, May 15, 2026

Weather Forecast

Patchy rain nearby
52.7°F
34.5°F
43.1°F
71%
0.17 in
89%
0%
13.6 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.29 μg/m3
PM10: 4.43 μg/m3
Carbon Monoxide: 135.05 μg/m3
Nitrogen Dioxide: 1.69 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 94.68 μg/m3

Astronomical

Sunrise: 5:56 AM
Sun Transit: 1:32 PM
Sunset: 9:10 PM
Daylight: 15 hrs 14 mins
Moonrise: 4:48 AM
Moon Transit: 12:25 AM
Moonset: 8:25 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

9:05 PM - 11:35 PM
11:55 AM - 2:25 PM

Minor Periods

7:55 PM - 9:25 PM
4:18 AM - 5:48 AM

Action Rating: 6 out of 5

Saturday, May 16, 2026

Weather Forecast

Moderate rain
50.8°F
30.1°F
40.5°F
70%
0.22 in
80%
17%
12.5 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 3.59 μg/m3
PM10: 4.74 μg/m3
Carbon Monoxide: 138.42 μg/m3
Nitrogen Dioxide: 2.12 μg/m3
Sulphur Dioxide: 1.56 μg/m3
Ozone: 84.52 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 1:32 PM
Sunset: 9:11 PM
Daylight: 15 hrs 16 mins
Moonrise: 5:15 AM
Moon Transit: 1:25 PM
Moonset: 9:54 PM
Moon Phase: New
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:55 AM - 3:25 PM

Minor Periods

9:24 PM - 10:54 PM
4:45 AM - 6:15 AM

Action Rating: 5 out of 5

Sunday, May 17, 2026

Weather Forecast

Patchy rain nearby
51.8°F
29.6°F
40.2°F
71%
0.12 in
89%
14%
5.8 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 2.65 μg/m3
PM10: 3.11 μg/m3
Carbon Monoxide: 147.07 μg/m3
Nitrogen Dioxide: 2.12 μg/m3
Sulphur Dioxide: 1.92 μg/m3
Ozone: 85.4 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:32 PM
Sunset: 9:12 PM
Daylight: 15 hrs 19 mins
Moonrise: 5:54 AM
Moon Transit: 2:30 PM
Moonset: 11:17 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:00 PM - 4:30 PM

Minor Periods

12:00 AM - 12:00 AM
5:24 AM - 6:54 AM

Action Rating: 4 out of 5

Monday, May 18, 2026

Weather Forecast

Patchy rain nearby
54.2°F
26.5°F
41.5°F
75%
0.18 in
87%
10%
4.3 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 2.9 μg/m3
PM10: 2.92 μg/m3
Carbon Monoxide: 151.08 μg/m3
Nitrogen Dioxide: 4.9 μg/m3
Sulphur Dioxide: 1 μg/m3
Ozone: 60.31 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:32 PM
Sunset: 9:14 PM
Daylight: 15 hrs 21 mins
Moonrise: 6:49 AM
Moon Transit: 3:37 PM
Moonset: 12:17 AM
Moon Phase: New
Moon Illumination: 2.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:07 PM - 5:37 PM

Minor Periods

6:19 AM - 7:49 AM
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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