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

Current Water Temperature

58.1°F

Measurement Time: Friday, July 31, 2026, 5:45 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)
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

78°F
Sunny
Sunny
75.7°F
81.3°F
32%
SW 4.5 mph
5.1 mph
84.9°F
41.1°F
0 in
0%
10 mi
1022 mbar
6.8

Five Day Weather Forecast

Sunny
Fri
H: 92°F
L: 53°F
Sunny
Sat
H: 92°F
L: 53°F
Sunny
Sun
H: 74°F
L: 45°F
Sunny
Mon
H: 67°F
L: 38°F
Sunny
Tue
H: 78°F
L: 38°F

Air Quality

AQI: 1 - Good
PM2.5: 6.5 μg/m3
PM10: 7.2 μg/m3
Carbon Monoxide: 110 μg/m3
Nitrogen Dioxide: 0.5 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 120 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 1:42 PM
Sunset: 9:14 PM
Daylight: 15 hrs 4 mins
Moonrise: 10:12 PM
Moon Transit: 3:02 AM
Moonset: 8:20 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

2:32 AM - 5:02 AM
11:35 AM - 2:05 PM

Minor Periods

9:42 PM - 11:12 PM
7:50 AM - 9:20 AM

Action Rating: 4 out of 5

Fire Weather Watch issued July 30 at 11:39PM MDT until August 2 at 9:00PM MDT by NWS Great Falls MT

Effective: Thu July 30, 2026, 11:39 PM
Expires: Fri July 31, 2026, 6:00 PM

* AFFECTED AREA...Eastern Glacier/Toole/Central/Eastern Pondera/Liberty, Hill and Blaine Counties, Lewis and Clark National Forest Rocky Mountain District-Rocky Mountain Front, Chouteau and Fergus Counties, Lincoln Ranger District of the Helena National Forest, Central and Eastern Lewis and Clark National Forest Areas and Helena and Townsend Ranger Districts of the Helena National Forest. * WINDS...West 15 to 25 mph with gusts up to 50 mph. Along the Rocky Mountain Front, west winds 30 to 40 mph with gusts up to 60 mph and isolated cases of 75 mph. * RELATIVE HUMIDITY...As low as 8 percent. * TEMPERATURES...Between 100 and 110 degrees on Saturday. * COLD FRONT...A strong, dry cold front will arrive Saturday evening. * IMPACTS...Any fires that develop will spread rapidly. Containment of any ongoing or new fires may be very difficult. Outdoor burning is not recommended.

A Fire Weather Watch means that critical fire weather conditions are possible. A combination of gusty winds, low relative humidity, and warm temperatures will create high fire growth potential. Please advise the appropriate officials or fire crews in these areas of this Fire Weather Watch.


High Wind Watch issued July 30 at 11:30PM MDT until August 2 at 12:00PM MDT by NWS Great Falls MT

Effective: Thu July 30, 2026, 11:30 PM
Expires: Fri July 31, 2026, 6:00 PM

* WHAT...West winds 30 to 40 mph, with gusts up to 60 mph possible. Isolated wind gusts up to 75 mph along the immediate eastern slopes of the Rocky Mountain Front. * WHERE...East Glacier Park Region, Northern High Plains, and Eastern Glacier, Western Toole, and Central Pondera Counties. * WHEN...From Saturday evening through Sunday morning. * IMPACTS...Travel could be difficult, especially for high profile vehicles. Recreationists should be aware of any trees that could fall while establishing camps or hiking. * ADDITIONAL DETAILS...The most intense winds are likely to occur between 12 AM and 8 AM Sunday when mountain activity will be at its peak.

Monitor the latest forecasts and warnings for updates.
Friday, July 31, 2026

Weather Forecast

Sunny
92.1°F
52.5°F
74.8°F
30%
0 in
0%
0%
4.5 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 10.34 μg/m3
PM10: 11.45 μg/m3
Carbon Monoxide: 149.96 μg/m3
Nitrogen Dioxide: 4.71 μg/m3
Sulphur Dioxide: 0.83 μg/m3
Ozone: 103.58 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 1:42 PM
Sunset: 9:14 PM
Daylight: 15 hrs 4 mins
Moonrise: 10:12 PM
Moon Transit: 3:02 AM
Moonset: 8:20 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

2:32 AM - 5:02 AM
11:35 AM - 2:05 PM

Minor Periods

9:42 PM - 11:12 PM
7:50 AM - 9:20 AM

Action Rating: 4 out of 5

Saturday, August 1, 2026

Weather Forecast

Sunny
92.2°F
53.2°F
71.5°F
32%
0 in
1%
0%
16.1 mph
8.2


Air Quality

AQI: 1 - Good
PM2.5: 6.62 μg/m3
PM10: 7.18 μg/m3
Carbon Monoxide: 138.13 μg/m3
Nitrogen Dioxide: 4.51 μg/m3
Sulphur Dioxide: 0.64 μg/m3
Ozone: 86.04 μg/m3

Astronomical

Sunrise: 6:12 AM
Sun Transit: 1:42 PM
Sunset: 9:13 PM
Daylight: 15 hrs 1 mins
Moonrise: 10:26 PM
Moon Transit: 3:45 AM
Moonset: 9:32 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

3:15 AM - 5:45 AM
12:18 AM - 2:48 PM

Minor Periods

9:56 PM - 11:26 PM
9:02 AM - 10:32 AM

Action Rating: 3 out of 5

Sunday, August 2, 2026

Weather Forecast

Sunny
74.4°F
45.1°F
60.9°F
34%
0 in
1%
0%
12.8 mph
7.6


Air Quality

AQI: 1 - Good
PM2.5: 4.13 μg/m3
PM10: 4.6 μg/m3
Carbon Monoxide: 97.92 μg/m3
Nitrogen Dioxide: 1.06 μg/m3
Sulphur Dioxide: 0.67 μg/m3
Ozone: 74.92 μg/m3

Astronomical

Sunrise: 6:13 AM
Sun Transit: 1:42 PM
Sunset: 9:11 PM
Daylight: 14 hrs 58 mins
Moonrise: 10:41 PM
Moon Transit: 4:50 PM
Moonset: 10:45 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%

Best Times for Fishing or Hunting

Major Periods

4:20 PM - 6:50 PM
4:20 PM - 6:50 PM

Minor Periods

10:11 PM - 11:41 PM
10:15 AM - 11:45 AM

Action Rating: 2 out of 5

Monday, August 3, 2026

Weather Forecast

Sunny
67.3°F
38.4°F
53.1°F
59%
0.01 in
17%
0%
6 mph
3.7


Air Quality

AQI: 1 - Good
PM2.5: 13.19 μg/m3
PM10: 14.19 μg/m3
Carbon Monoxide: 129.57 μg/m3
Nitrogen Dioxide: 4.82 μg/m3
Sulphur Dioxide: 0.84 μg/m3
Ozone: 82.67 μg/m3

Astronomical

Sunrise: 6:14 AM
Sun Transit: 1:42 PM
Sunset: 9:10 PM
Daylight: 14 hrs 55 mins
Moonrise: 10:57 PM
Moon Transit: 5:12 AM
Moonset: 11:59 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

4:42 AM - 7:12 AM
1:46 PM - 4:16 PM

Minor Periods

10:27 PM - 11:57 PM
11:29 AM - 12:59 AM

Action Rating: 2 out of 5

Tuesday, August 4, 2026

Weather Forecast

Sunny
78.4°F
38.2°F
58.6°F
47%
0 in
1%
0%
4.5 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 10.89 μg/m3
PM10: 11.13 μg/m3
Carbon Monoxide: 184 μg/m3
Nitrogen Dioxide: 11.91 μg/m3
Sulphur Dioxide: 0.53 μg/m3
Ozone: 44.86 μg/m3

Astronomical

Sunrise: 6:16 AM
Sun Transit: 1:42 PM
Sunset: 9:08 PM
Daylight: 14 hrs 52 mins
Moonrise: 11:15 PM
Moon Transit: 5:57 AM
Moonset: 1:16 PM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

5:27 AM - 7:57 AM
2:33 PM - 5:03 PM

Minor Periods

12:00 AM - 12:00 AM
12:46 AM - 2:16 PM

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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