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

Current Water Temperature

45.0°F

Measurement Time: Friday, May 29, 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

64°F
Sunny
Sunny
64°F
75.5°F
70%
SW 3.8 mph
4.4 mph
73.5°F
52.2°F
0 in
0%
9 mi
1008 mbar
3.3

Five Day Weather Forecast

Patchy rain nearby
Fri
H: 85°F
L: 49°F
Moderate rain
Sat
H: 67°F
L: 43°F
Heavy rain
Sun
H: 50°F
L: 38°F
Moderate rain
Mon
H: 41°F
L: 38°F
Moderate rain
Tue
H: 52°F
L: 40°F

Air Quality

AQI: 1 - Good
PM2.5: 3.85 μg/m3
PM10: 6.65 μg/m3
Carbon Monoxide: 124.85 μg/m3
Nitrogen Dioxide: 1.05 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 120 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 1:33 PM
Sunset: 9:26 PM
Daylight: 15 hrs 45 mins
Moonrise: 8:31 PM
Moon Transit: 12:00 AM
Moonset: 4:14 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
8:26 AM - 10:56 AM

Minor Periods

8:01 PM - 9:31 PM
3:44 AM - 5:14 AM

Action Rating: 4 out of 5

Hydrologic Outlook issued May 28 at 1:51PM MDT by NWS Missoula MT

Effective: Thu May 28, 2026, 1:51 PM
Expires: Fri May 29, 2026, 12:00 PM

ESFMSO What: Widespread Moderate to Heavy Precipitation Where: Western Montana Counties: Flathead, Lake, Missoula, Powell, Granite, Ravalli, Deer Lodge, and Silver Bow Timing: Saturday May 30 through Monday June 1, 2026 Relevant factors: Total precipitation amounts of 1 to 3 inches with locally higher amounts possible in higher terrain along the divide. Ongoing snowmelt and recent precipitation has kept stream and river levels rising. Anticipate further rises in local waterways, rockfall and mudslide potential in steep terrain, as well as possible urban and low-land flooding. The Clark Fork River near Missoula is currently forecast to reach near 8 feet by Monday afternoon, June 1. The Flathead River near Columbia Falls is currently forecast to reach near 14 feet by Tuesday night, June 2. Additional information will be provided at or before Noon MDT on May 29th.


Friday, May 29, 2026

Weather Forecast

Patchy rain nearby
84.6°F
48.8°F
68.3°F
50%
0.01 in
85%
0%
8.9 mph
7.5


Air Quality

AQI: 1 - Good
PM2.5: 4.12 μg/m3
PM10: 6.16 μg/m3
Carbon Monoxide: 126.41 μg/m3
Nitrogen Dioxide: 2.93 μg/m3
Sulphur Dioxide: 1.01 μg/m3
Ozone: 84.4 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 1:33 PM
Sunset: 9:26 PM
Daylight: 15 hrs 45 mins
Moonrise: 8:31 PM
Moon Transit: 12:00 AM
Moonset: 4:14 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
8:26 AM - 10:56 AM

Minor Periods

8:01 PM - 9:31 PM
3:44 AM - 5:14 AM

Action Rating: 4 out of 5

Saturday, May 30, 2026

Weather Forecast

Moderate rain
67.1°F
43.2°F
55°F
77%
0.48 in
84%
0%
4 mph
5.3


Air Quality

AQI: 1 - Good
PM2.5: 5.34 μg/m3
PM10: 10.23 μg/m3
Carbon Monoxide: 127.89 μg/m3
Nitrogen Dioxide: 3.33 μg/m3
Sulphur Dioxide: 1.11 μg/m3
Ozone: 93.96 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 1:33 PM
Sunset: 9:27 PM
Daylight: 15 hrs 47 mins
Moonrise: 9:37 PM
Moon Transit: 12:38 AM
Moonset: 4:41 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:08 AM - 2:38 AM
9:14 AM - 11:44 AM

Minor Periods

9:07 PM - 10:37 PM
4:11 AM - 5:41 AM

Action Rating: 5 out of 5

Sunday, May 31, 2026

Weather Forecast

Heavy rain
50.1°F
37.7°F
45.3°F
98%
1.97 in
81%
0%
4.7 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 3.05 μg/m3
PM10: 3.86 μg/m3
Carbon Monoxide: 121.61 μg/m3
Nitrogen Dioxide: 3.29 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 71.68 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 1:33 PM
Sunset: 9:28 PM
Daylight: 15 hrs 49 mins
Moonrise: 10:38 PM
Moon Transit: 1:27 AM
Moonset: 5:14 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:57 AM - 3:27 AM
10:04 AM - 12:34 AM

Minor Periods

10:08 PM - 11:38 PM
4:44 AM - 6:14 AM

Action Rating: 3 out of 5

Monday, June 1, 2026

Weather Forecast

Moderate rain
40.6°F
38°F
40.1°F
99%
0.43 in
89%
0%
2.5 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 1.98 μg/m3
PM10: 2.07 μg/m3
Carbon Monoxide: 124.15 μg/m3
Nitrogen Dioxide: 4.2 μg/m3
Sulphur Dioxide: 1.07 μg/m3
Ozone: 57.68 μg/m3

Astronomical

Sunrise: 5:39 AM
Sun Transit: 1:34 PM
Sunset: 9:29 PM
Daylight: 15 hrs 50 mins
Moonrise: 11:29 PM
Moon Transit: 2:18 AM
Moonset: 5:59 AM
Moon Phase: Full
Moon Illumination: 96.8%

Best Times for Fishing or Hunting

Major Periods

1:48 AM - 4:18 AM
10:55 AM - 1:25 PM

Minor Periods

12:00 AM - 12:00 AM
5:29 AM - 6:59 AM

Action Rating: 4 out of 5

Tuesday, June 2, 2026

Weather Forecast

Moderate rain
51.9°F
40.4°F
45.2°F
97%
0.2 in
79%
0%
3.1 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 1.77 μg/m3
PM10: 1.82 μg/m3
Carbon Monoxide: 135.93 μg/m3
Nitrogen Dioxide: 4.12 μg/m3
Sulphur Dioxide: 1.13 μg/m3
Ozone: 62.54 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 1:34 PM
Sunset: 9:30 PM
Daylight: 15 hrs 52 mins
Moonrise: 12:29 AM
Moon Transit: 3:10 AM
Moonset: 6:53 AM
Moon Phase: Full
Moon Illumination: 91.7%

Best Times for Fishing or Hunting

Major Periods

2:40 AM - 5:10 AM
11:46 AM - 2:16 PM

Minor Periods

6:23 AM - 7:53 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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