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

Current Water Temperature

58.5°F

Measurement Time: Saturday, July 18, 2026, 2:45 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

80.1°F
Sunny
Sunny
77.3°F
77.2°F
24%
SSW 2.7 mph
5.6 mph
79.9°F
37.7°F
0 in
0%
9 mi
1013 mbar
0

Five Day Weather Forecast

Sunny
Sat
H: 93°F
L: 61°F
Sunny
Sun
H: 85°F
L: 55°F
Sunny
Mon
H: 86°F
L: 47°F
Sunny
Tue
H: 87°F
L: 57°F
Sunny
Wed
H: 92°F
L: 54°F

Air Quality

AQI: 1 - Good
PM2.5: 9.8 μg/m3
PM10: 10.7 μg/m3
Carbon Monoxide: 106 μg/m3
Nitrogen Dioxide: 1.5 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 115 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

Saturday, July 18, 2026

Weather Forecast

Sunny
93.2°F
61.3°F
77.7°F
46%
0.01 in
36%
0%
13.2 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 12.22 μg/m3
PM10: 14.75 μg/m3
Carbon Monoxide: 108.92 μg/m3
Nitrogen Dioxide: 4.95 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 89.17 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
84.6°F
55.4°F
71°F
30%
0 in
0%
0%
11 mph
8.4


Air Quality

AQI: 1 - Good
PM2.5: 14.74 μg/m3
PM10: 15.88 μg/m3
Carbon Monoxide: 325.96 μg/m3
Nitrogen Dioxide: 2.48 μg/m3
Sulphur Dioxide: 0.63 μg/m3
Ozone: 116.25 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
85.8°F
47.3°F
66.8°F
51%
0 in
2%
0%
6.3 mph
8.8


Air Quality

AQI: 1 - Good
PM2.5: 4.63 μg/m3
PM10: 5.06 μg/m3
Carbon Monoxide: 119.42 μg/m3
Nitrogen Dioxide: 4.42 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 96.17 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

Sunny
86.6°F
56.7°F
69.5°F
56%
0 in
5%
0%
5.1 mph
8.9


Air Quality

AQI: 1 - Good
PM2.5: 4.21 μg/m3
PM10: 4.7 μg/m3
Carbon Monoxide: 119.58 μg/m3
Nitrogen Dioxide: 3.8 μg/m3
Sulphur Dioxide: 0.41 μg/m3
Ozone: 82.29 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

Wednesday, July 22, 2026

Weather Forecast

Sunny
92.4°F
54.4°F
73.4°F
52%
0.01 in
17%
0%
4.3 mph
8.3


Air Quality

AQI: 1 - Good
PM2.5: 5.78 μg/m3
PM10: 6.23 μg/m3
Carbon Monoxide: 126.2 μg/m3
Nitrogen Dioxide: 6.28 μg/m3
Sulphur Dioxide: 0.41 μg/m3
Ozone: 82.25 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 1:42 PM
Sunset: 9:25 PM
Daylight: 15 hrs 27 mins
Moonrise: 4:10 PM
Moon Transit: 8:31 PM
Moonset: 12:23 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

4:19 AM - 6:49 AM
8:01 PM - 10:31 PM

Minor Periods

3:40 PM - 5:10 PM
12:00 AM - 12:00 AM

Action Rating: 2 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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