Water Temperature of the Chattahoochee River in Alpharetta, GA

Current Water Temperature

46.8°F

Measurement Time: Wednesday, January 21, 2026, 6:00 PM EST

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

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)
Oconaluftee River, Birdtown, NC (115.2 mi)

Weather for Alpharetta, Georgia

Current Weather

48°F
Overcast
Overcast
47.1°F
45°F
35%
SSE 3.4 mph
5.7 mph
42.9°F
23.3°F
0 in
100%
9 mi
1025 mbar
0

Five Day Weather Forecast

Sunny
Wed
H: 60°F
L: 25°F
Moderate rain
Thu
H: 46°F
L: 41°F
Moderate rain
Fri
H: 47°F
L: 39°F
Overcast
Sat
H: 36°F
L: 26°F
Light freezing rain
Sun
H: 32°F
L: 25°F

Air Quality

AQI: 1 - Good
PM2.5: 9.25 μg/m3
PM10: 9.65 μg/m3
Carbon Monoxide: 253.85 μg/m3
Nitrogen Dioxide: 15.05 μg/m3
Sulphur Dioxide: 4.35 μg/m3
Ozone: 55 μg/m3

Astronomical

Sunrise: 7:40 AM
Sun Transit: 12:48 AM
Sunset: 5:57 PM
Daylight: 10 hrs 17 mins
Moonrise: 9:27 AM
Moon Transit: 3:08 PM
Moonset: 8:58 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.1%

Best Times for Fishing or Hunting

Major Periods

3:03 AM - 5:33 AM
2:38 PM - 5:08 PM

Minor Periods

8:28 PM - 9:58 PM
8:57 AM - 10:27 AM

Action Rating: 2 out of 5

Winter Storm Watch issued January 21 at 12:17PM EST until January 26 at 10:00AM EST by NWS Peachtree City GA

Effective: Wed January 21, 2026, 12:17 PM
Expires: Thu January 22, 2026, 3:00 AM

* WHAT...Heavy mixed precipitation possible. Total snow and sleet accumulations up to 4 inches and ice accumulations greater than one quarter inch possible. * WHERE...Portions of north central, northeast, and northwest Georgia. * WHEN...From late Friday night through Monday morning. * IMPACTS...Expect power outages and tree damage due to the ice. Travel could be impossible. The hazardous conditions could impact the Monday morning commute.

Monitor the latest forecasts for updates on this situation. Persons should consider delaying all travelSaturday and Sunday. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded.
Wednesday, January 21, 2026

Weather Forecast

Sunny
60.3°F
25.2°F
38.9°F
40%
0 in
0%
0%
8.1 mph
0.6


Air Quality

AQI: 2 - Moderate
PM2.5: 21.64 μg/m3
PM10: 22.07 μg/m3
Carbon Monoxide: 358.85 μg/m3
Nitrogen Dioxide: 39.81 μg/m3
Sulphur Dioxide: 8.31 μg/m3
Ozone: 30.84 μg/m3

Astronomical

Sunrise: 7:40 AM
Sun Transit: 12:48 AM
Sunset: 5:57 PM
Daylight: 10 hrs 17 mins
Moonrise: 9:27 AM
Moon Transit: 3:08 PM
Moonset: 8:58 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.1%

Best Times for Fishing or Hunting

Major Periods

3:03 AM - 5:33 AM
2:38 PM - 5:08 PM

Minor Periods

8:28 PM - 9:58 PM
8:57 AM - 10:27 AM

Action Rating: 2 out of 5

Thursday, January 22, 2026

Weather Forecast

Moderate rain
45.5°F
41.4°F
43.8°F
84%
0.41 in
89%
0%
5.8 mph
0.1


Air Quality

AQI: 2 - Moderate
PM2.5: 16.87 μg/m3
PM10: 17.65 μg/m3
Carbon Monoxide: 377.01 μg/m3
Nitrogen Dioxide: 35.84 μg/m3
Sulphur Dioxide: 6.67 μg/m3
Ozone: 36.84 μg/m3

Astronomical

Sunrise: 7:40 AM
Sun Transit: 12:48 AM
Sunset: 5:58 PM
Daylight: 10 hrs 18 mins
Moonrise: 9:54 AM
Moon Transit: 3:52 PM
Moonset: 10:00 PM
Moon Phase: Waxing Crescent
Moon Illumination: 15.4%

Best Times for Fishing or Hunting

Major Periods

3:47 AM - 6:17 AM
3:22 PM - 5:52 PM

Minor Periods

9:30 PM - 11:00 PM
9:24 AM - 10:54 AM

Action Rating: 3 out of 5

Friday, January 23, 2026

Weather Forecast

Moderate rain
46.6°F
39.4°F
43.8°F
90%
0.51 in
87%
0%
5.4 mph
0.3


Air Quality

AQI: 2 - Moderate
PM2.5: 28.6 μg/m3
PM10: 29.19 μg/m3
Carbon Monoxide: 503.65 μg/m3
Nitrogen Dioxide: 42.93 μg/m3
Sulphur Dioxide: 8.65 μg/m3
Ozone: 24.96 μg/m3

Astronomical

Sunrise: 7:39 AM
Sun Transit: 12:48 AM
Sunset: 5:59 PM
Daylight: 10 hrs 20 mins
Moonrise: 10:21 AM
Moon Transit: 9:54 AM
Moonset: 11:04 PM
Moon Phase: Waxing Crescent
Moon Illumination: 24.4%

Best Times for Fishing or Hunting

Major Periods

9:24 AM - 11:54 AM
9:24 AM - 11:54 AM

Minor Periods

12:00 AM - 12:00 AM
9:51 AM - 11:21 AM

Action Rating: 2 out of 5

Saturday, January 24, 2026

Weather Forecast

Overcast
35.6°F
26.2°F
32.8°F
67%
0 in
0%
0%
14.3 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 9.51 μg/m3
PM10: 9.59 μg/m3
Carbon Monoxide: 207.27 μg/m3
Nitrogen Dioxide: 15.44 μg/m3
Sulphur Dioxide: 6.12 μg/m3
Ozone: 49.76 μg/m3

Astronomical

Sunrise: 7:39 AM
Sun Transit: 12:49 AM
Sunset: 6:00 PM
Daylight: 10 hrs 21 mins
Moonrise: 10:49 AM
Moon Transit: 5:23 PM
Moonset: 12:04 AM
Moon Phase: First Quarter
Moon Illumination: 34.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:53 PM - 7:23 PM

Minor Periods

10:19 AM - 11:49 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, January 25, 2026

Weather Forecast

Light freezing rain
32.3°F
24.5°F
28.2°F
96%
1.48 in
64%
66%
13.6 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 3.23 μg/m3
PM10: 3.3 μg/m3
Carbon Monoxide: 199.87 μg/m3
Nitrogen Dioxide: 11.13 μg/m3
Sulphur Dioxide: 4.2 μg/m3
Ozone: 61.46 μg/m3

Astronomical

Sunrise: 7:38 AM
Sun Transit: 12:49 AM
Sunset: 6:01 PM
Daylight: 10 hrs 23 mins
Moonrise: 11:18 AM
Moon Transit: 6:13 PM
Moonset: 12:09 AM
Moon Phase: First Quarter
Moon Illumination: 45.8%

Best Times for Fishing or Hunting

Major Periods

6:05 AM - 8:35 AM
5:43 PM - 8:13 PM

Minor Periods

10:48 AM - 12:18 AM
12:00 AM - 12:00 AM

Action Rating: 3 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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