Alpharetta Weather and Climate Data
Weather and Climate data from 10/1/1901 to 8/31/2009 as measured at Cooperative Climate Station 090219, 5 Miles South-Southwest of Alpharetta
| Avg Max. Temp | Avg Min Temp | Avg Total Precip | Avg Total Snow | |
|---|---|---|---|---|
| Jan | 49.3°F | 28.0 | 4.90 | 1.3 |
| Feb | 53.6°F | 30.0 | 4.96 | 0.4 |
| Mar | 62.6°F | 37.0 | 5.95 | 0 |
| Apr | 71.4°F | 44.6 | 4.19 | 0 |
| May | 78.4°F | 53.7 | 4.36 | 0 |
| Jun | 84.8°F | 61.8 | 3.74 | 0 |
| Jul | 87.4°F | 65.5 | 4.48 | 0 |
| Aug | 86.8°F | 65.1 | 4.03 | 0 |
| Sep | 81.3°F | 59.2 | 3.49 | 0 |
| Oct | 71.7°F | 46.6 | 3.46 | 0 |
| Nov | 62.2°F | 37.4 | 3.67 | 0 |
| Dec | 53.0°F | 30.9 | 4.63 | 0.1 |
| Annual | 70.2°F | 46.7 | 51.87 | 1.8 |
| Extreme Daily High Temp | Extreme Daily High Date |
Extreme Daily Low Temp | Extreme Daily Low Date | |
|---|---|---|---|---|
| Jan | 75°F | 30,1975 | -10°F | 21,1985 |
| Feb | 80°F | 15,1989 | 1°F | 17,1958 |
| Mar | 88°F | 26,2007 | 6°F | 5,1960 |
| Apr | 91°F | 26,1960 | 24°F | 01,1987 |
| May | 95°F | 17,1962 | 31°F | 4,1971 |
| Jun | 101°F | 30,1969 | 40°F | 1,1984 |
| Jul | 102°F | 22,1986 | 48°F | 16,1967 |
| Aug | 101°F | 17,2007 | 50°F | 29,1968 |
| Sep | 98°F | 1,1957 | 28°F | 30,1967 |
| Oct | 88°F | 5,1959 | 25°F | 27,1962 |
| Nov | 84°F | 1,1961 | 10°F | 25,1970 |
| Dec | 76°F | 2,1991 | -1°F | 13,1962 |
| Avg. Max. Temp. | Avg. Min. Temp. | Avg. Mean. Temp. | |
|---|---|---|---|
| Annual | 70.2°F | 46.7°F | 58.4°F |
| Winter | 52°F | 29.6°F | 40.8°F |
| Spring | 70.8°F | 45.1°F | 57.9°F |
| Summer | 86.3°F | 64.1°F | 75.2°F |
| Fall | 71.8°F | 47.8°F | 59.8°F |
| Days Max Temp Above 90°F | Days Max Temp Below 32°F | Days Min Temp Below 32°F | Days Min Temp Below 0°F | |
|---|---|---|---|---|
| Annual | 28.4 | 3.5 | 85 | 0.5 |
| Winter | 0 | 3.2 | 57.6 | 0.5 |
| Spring | 1 | 0.2 | 14.5 | 0 |
| Summer | 25 | 0 | 0 | 0 |
| Fall | 2.5 | 0.1 | 12.9 | 0 |
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