Water Temperature of the Chattahoochee River in Alpharetta, GA

Current Water Temperature

67.1°F

Measurement Time: Sunday, July 26, 2026, 7:00 AM EDT

Temperature Locations

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Local Points of Interest

Garrard Landing Park; Atlanta, GA

Chattahoochee River

Station Name: CHATTAHOOCHEE R 0.39 MI DS GA140, ALPHARETTA, GA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 892 feet

Nearest Address:
Garrard Landing Park
Alpharetta, GA 30022
Fulton County

GPS Coordinates: 33.97305556, -84.26888889

Nearby Water Temperatures

Chattahoochee River, Johns Creek, GA (4.2 mi)
Peachtree Creek, Brookhaven, GA (10.7 mi)
Chattahoochee River, Suwanee, GA (10.8 mi)
Suwanee Creek, Suwanee, GA (11.1 mi)
Level Creek, Suwanee, GA (13.9 mi)
Richland Creek, Sugar Hill, GA (15.8 mi)
Pole Bridge Creek, Lithonia, GA (22.1 mi)
Etowah River, Cartersville, GA (30 mi)
Chattahoochee River, Helen, GA (59 mi)
Falling Creek, Juliette, GA (68 mi)
Hiwassee River , Reliance, TN (85 mi)
Richard B. Russell Lake, Calhoun Falls, SC (94.9 mi)
Cheoah River, Tapoco, NC (103.2 mi)
Lake Strom Thurmond, McCormick, SC (110.7 mi)
Saluda River, Williamston, SC (113.2 mi)

Weather for Alpharetta, Georgia

Current Weather

80.8°F
Partly Cloudy
Partly Cloudy
87.6°F
88.7°F
88%
NW 6.7 mph
7.8 mph
80.8°F
76.7°F
0 in
42%
5 mi
1014 mbar
6.6

Five Day Weather Forecast

Sunny
Sun
H: 93°F
L: 72°F
Sunny
Mon
H: 97°F
L: 75°F
Sunny
Tue
H: 101°F
L: 79°F
Partly Cloudy
Wed
H: 97°F
L: 73°F
Sunny
Thu
H: 95°F
L: 76°F

Air Quality

AQI: 1 - Good
PM2.5: 3.2 μg/m3
PM10: 3.3 μg/m3
Carbon Monoxide: 128 μg/m3
Nitrogen Dioxide: 2.6 μg/m3
Sulphur Dioxide: 1 μg/m3
Ozone: 87 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 1:43 PM
Sunset: 8:43 PM
Daylight: 13 hrs 58 mins
Moonrise: 7:03 PM
Moon Transit: 11:49 PM
Moonset: 3:42 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

11:40 AM - 2:10 PM
12:00 AM - 12:00 AM

Minor Periods

6:33 PM - 8:03 PM
3:12 AM - 4:42 AM

Action Rating: 2 out of 5

Flood Warning issued July 25 at 8:44PM EDT until July 26 at 4:10PM EDT by NWS Peachtree City GA

Effective: Sat July 25, 2026, 8:44 PM
Expires: Sun July 26, 2026, 4:00 PM

...The Flood Warning continues for the following rivers in Georgia... Big Creek near Alpharetta affecting Fulton and Forsyth Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Big Creek near Alpharetta. * WHEN...Until Sunday afternoon. * IMPACTS...At 8.0 feet, Minor flooding continues to expand further into the woodlands and fields along the creek from near Cumming in south Forsyth County to Alpharetta and Roswell in north Fulton County. Additional portions of The Big Creek Greenway have minor flooding with 1 to 2 feet of water. Most of the walking and biking paths will be closed...especially upstream and downstream from the gage on Kimball Bridge Road and near Rock Mill Park. Portions of the YMCA Campground off Preston Ridge Road will flood. * ADDITIONAL DETAILS... - At 7:45 PM EDT Saturday the stage was 8.4 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:45 PM EDT Saturday was 9.3 feet. - Forecast...The river is expected to fall below flood stage by Sunday afternoon and continue to slowly fall through Monday. - Flood stage is 7.0 feet. - Flood History...This crest compares to a previous crest of 8.4 feet on 01/20/2001. - http://www.weather.gov/safety/flood

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Additional information is available at weather.gov/atlanta.
Sunday, July 26, 2026

Weather Forecast

Sunny
92.8°F
72°F
80.8°F
76%
0 in
9%
0%
9.8 mph
10.5


Air Quality

AQI: 1 - Good
PM2.5: 6.44 μg/m3
PM10: 6.82 μg/m3
Carbon Monoxide: 139.75 μg/m3
Nitrogen Dioxide: 4.9 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 76.17 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 1:43 PM
Sunset: 8:43 PM
Daylight: 13 hrs 58 mins
Moonrise: 7:03 PM
Moon Transit: 11:49 PM
Moonset: 3:42 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

11:40 AM - 2:10 PM
12:00 AM - 12:00 AM

Minor Periods

6:33 PM - 8:03 PM
3:12 AM - 4:42 AM

Action Rating: 2 out of 5

Monday, July 27, 2026

Weather Forecast

Sunny
96.7°F
75°F
85.4°F
54%
0 in
17%
0%
7.8 mph
10.1


Air Quality

AQI: 2 - Moderate
PM2.5: 16.4 μg/m3
PM10: 17.1 μg/m3
Carbon Monoxide: 182.58 μg/m3
Nitrogen Dioxide: 8.05 μg/m3
Sulphur Dioxide: 1.36 μg/m3
Ozone: 86.08 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 1:43 PM
Sunset: 8:42 PM
Daylight: 13 hrs 57 mins
Moonrise: 7:47 PM
Moon Transit: 12:00 AM
Moonset: 4:38 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:32 AM - 3:02 PM

Minor Periods

7:17 PM - 8:47 PM
4:08 AM - 5:38 AM

Action Rating: 3 out of 5

Tuesday, July 28, 2026

Weather Forecast

Sunny
101.1°F
79.3°F
89.5°F
51%
0 in
3%
0%
9.2 mph
10.5


Air Quality

AQI: 2 - Moderate
PM2.5: 21.72 μg/m3
PM10: 22.93 μg/m3
Carbon Monoxide: 235.58 μg/m3
Nitrogen Dioxide: 12.58 μg/m3
Sulphur Dioxide: 1.86 μg/m3
Ozone: 86.08 μg/m3

Astronomical

Sunrise: 6:46 AM
Sun Transit: 1:43 PM
Sunset: 8:41 PM
Daylight: 13 hrs 55 mins
Moonrise: 8:26 PM
Moon Transit: 12:39 AM
Moonset: 5:36 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:09 AM - 2:39 AM
1:21 PM - 3:51 PM

Minor Periods

7:56 PM - 9:26 PM
5:06 AM - 6:36 AM

Action Rating: 4 out of 5

Wednesday, July 29, 2026

Weather Forecast

Partly Cloudy
96.6°F
72.9°F
82.7°F
67%
0.23 in
64%
0%
13.9 mph
4.7


Air Quality

AQI: 1 - Good
PM2.5: 10.63 μg/m3
PM10: 11.02 μg/m3
Carbon Monoxide: 160.4 μg/m3
Nitrogen Dioxide: 5.66 μg/m3
Sulphur Dioxide: 1.24 μg/m3
Ozone: 96.04 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 1:43 PM
Sunset: 8:40 PM
Daylight: 13 hrs 54 mins
Moonrise: 8:59 PM
Moon Transit: 1:28 AM
Moonset: 6:37 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:58 AM - 3:28 AM
2:09 PM - 4:39 PM

Minor Periods

8:29 PM - 9:59 PM
6:07 AM - 7:37 AM

Action Rating: 4 out of 5

Thursday, July 30, 2026

Weather Forecast

Sunny
94.9°F
75.5°F
84.5°F
57%
0.04 in
57%
0%
10.7 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 11.01 μg/m3
PM10: 11.1 μg/m3
Carbon Monoxide: 257 μg/m3
Nitrogen Dioxide: 9.77 μg/m3
Sulphur Dioxide: 1.11 μg/m3
Ozone: 55.11 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 1:43 PM
Sunset: 8:40 PM
Daylight: 13 hrs 52 mins
Moonrise: 9:28 PM
Moon Transit: 2:14 AM
Moonset: 7:37 AM
Moon Phase: Full
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

1:44 AM - 4:14 AM
2:54 PM - 5:24 PM

Minor Periods

8:58 PM - 10:28 PM
7:07 AM - 8:37 AM

Action Rating: 5 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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