Water Temperature of the Chattahoochee River in Alpharetta, GA

Current Water Temperature

55.0°F 12.8°C
Cold Thermal Gear Required
55.0°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Cold shock risk with rapid dexterity loss (10–15 mins). Wetsuit or drysuit strongly advised for any immersion.

Measurement Time: Thursday, November 12, 2026, 5:00 PM EST

Temperature Locations

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Local Points of Interest

Garrard Landing Park; Atlanta, GA

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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

48.4°F
Mainly Clear
Conditions: Mainly Clear
Humidity: 71%
Feels Like: 43.9°F
Wind: W 4.9 mph
Wind Gusts: 11.9 mph
Pressure: 29.83 in
Precipitation: 0 in
Cloud Cover: 26%
Visibility: 14.1 mi
UV Index: 0

Five-Day Weather Forecast

Overcast
Thu
H: 64°F
L: 47°F
Mainly Sunny
Fri
H: 52°F
L: 38°F
Partly Cloudy
Sat
H: 52°F
L: 34°F
Overcast
Sun
H: 57°F
L: 40°F
Overcast
Mon
H: 55°F
L: 42°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
7.5 μg/m³
Good
PM10
7.7 μg/m³
Good
Ozone (O3)
53 μg/m³
Photochemical
NO2
14.4 μg/m³
Nitrogen Dioxide
SO2
1.5 μg/m³
Sulfur Dioxide
CO
169 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 28m daylight
Sunrise 7:07 AM
Solar Noon 12:21 PM
Sunset 5:35 PM
Moon
Waxing Crescent • 6%
Moonrise 10:22 AM
Transit 3:08 PM
Moonset 7:56 PM

Best Times for Fishing or Hunting

Major Periods

2:12 AM - 4:42 AM
2:38 PM - 5:08 PM

Minor Periods

9:52 AM - 11:22 AM
7:26 PM - 8:56 PM
Action Rating:
Good Action 3/5
Thursday, November 12, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 57.2°F
Average Humidity: 68%
Chance of Rain: 19%
Wind: 15.2 mph
UV Index: 4.5

Air Quality

EPA Index 2 • Moderate
PM2.5
7.5 μg/m³
Good
PM10
7.6 μg/m³
Good
Ozone (O3)
64.8 μg/m³
Photochemical
NO2
7.2 μg/m³
Nitrogen Dioxide
SO2
1.6 μg/m³
Sulfur Dioxide
CO
167.3 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 28m daylight
Sunrise 7:07 AM
Solar Noon 12:21 PM
Sunset 5:35 PM
Moon
Waxing Crescent • 6%
Moonrise 10:22 AM
Transit 3:08 PM
Moonset 7:56 PM

Best Times for Fishing or Hunting

Major Periods

2:12 AM - 4:42 AM
2:38 PM - 5:08 PM

Minor Periods

9:52 AM - 11:22 AM
7:26 PM - 8:56 PM
Action Rating:
Good Action 3/5
Friday, November 13, 2026

Weather Forecast

Conditions: Mainly Sunny
Average Temperature: 44.4°F
Average Humidity: 66%
Chance of Rain: 0%
Wind: 13.5 mph
UV Index: 4.4

Air Quality

EPA Index 1 • Good
PM2.5
4.4 μg/m³
Good
PM10
4.6 μg/m³
Good
Ozone (O3)
56.3 μg/m³
Photochemical
NO2
5.4 μg/m³
Nitrogen Dioxide
SO2
1.3 μg/m³
Sulfur Dioxide
CO
141.3 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 27m daylight
Sunrise 7:08 AM
Solar Noon 12:21 PM
Sunset 5:34 PM
Moon
Waxing Crescent • 13%
Moonrise 11:09 AM
Transit 4:00 PM
Moonset 8:52 PM

Best Times for Fishing or Hunting

Major Periods

3:04 AM - 5:34 AM
3:30 PM - 6:00 PM

Minor Periods

10:39 AM - 12:09 PM
8:22 PM - 9:52 PM
Action Rating:
Good Action 3/5
Saturday, November 14, 2026

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 43°F
Average Humidity: 58%
Chance of Rain: 0%
Wind: 11.9 mph
UV Index: 4.4

Air Quality

EPA Index 1 • Good
PM2.5
3.5 μg/m³
Good
PM10
3.6 μg/m³
Good
Ozone (O3)
53 μg/m³
Photochemical
NO2
6.9 μg/m³
Nitrogen Dioxide
SO2
1 μg/m³
Sulfur Dioxide
CO
148.4 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 25m daylight
Sunrise 7:09 AM
Solar Noon 12:21 PM
Sunset 5:34 PM
Moon
Waxing Crescent • 21%
Moonrise 11:50 AM
Transit 4:47 PM
Moonset 9:50 PM

Best Times for Fishing or Hunting

Major Periods

3:53 AM - 6:23 AM
4:17 PM - 6:47 PM

Minor Periods

11:20 AM - 12:50 PM
9:20 PM - 10:50 PM
Action Rating:
Fair Action 2/5
Sunday, November 15, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 48.6°F
Average Humidity: 39%
Chance of Rain: 0%
Wind: 4.7 mph
UV Index: 4.1

Air Quality

EPA Index 2 • Moderate
PM2.5
13.3 μg/m³
Moderate
PM10
13.6 μg/m³
Good
Ozone (O3)
42.8 μg/m³
Photochemical
NO2
21.7 μg/m³
Nitrogen Dioxide
SO2
1.2 μg/m³
Sulfur Dioxide
CO
206.9 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 24m daylight
Sunrise 7:09 AM
Solar Noon 12:21 PM
Sunset 5:33 PM
Moon
Waxing Crescent • 31%
Moonrise 12:26 PM
Transit 5:34 PM
Moonset 10:49 PM

Best Times for Fishing or Hunting

Major Periods

4:41 AM - 7:11 AM
5:04 PM - 7:34 PM

Minor Periods

11:56 AM - 1:26 PM
10:19 PM - 11:49 PM
Action Rating:
Very Good 4/5
Monday, November 16, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 48.9°F
Average Humidity: 45%
Chance of Rain: 2%
Wind: 9 mph
UV Index: 3.4

Air Quality

EPA Index 2 • Moderate
PM2.5
24.2 μg/m³
Moderate
PM10
24.8 μg/m³
Good
Ozone (O3)
30.8 μg/m³
Photochemical
NO2
31.2 μg/m³
Nitrogen Dioxide
SO2
1.6 μg/m³
Sulfur Dioxide
CO
224.2 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 22m daylight
Sunrise 7:10 AM
Solar Noon 12:21 PM
Sunset 5:33 PM
Moon
First Quarter • 42%
Moonrise 12:57 PM
Transit 6:18 PM
Moonset 11:47 PM

Best Times for Fishing or Hunting

Major Periods

5:26 AM - 7:56 AM
5:48 PM - 8:18 PM

Minor Periods

12:27 PM - 1:57 PM
11:17 PM - 12:47 AM
Action Rating:
Good Action 3/5
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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