Rock Hill vs Alpharetta Climate
99%matchRock Hill and Alpharetta are a 99% climate match. Very close: temperatures within 2°F (1°C), with similar rain, humidity and sun.
Rock Hill gets 46 in (1181 mm) of rain a year and Alpharetta 55 in (1405 mm). July is the warmest month in both, with highs of 91°F (33°C) in Rock Hill and 89°F (32°C) in Alpharetta.
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
Rock HillAlpharettasolid = high, dashed = low
Rain (in per month)
Rock HillAlpharetta
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Rock Hill | Alpharetta | Rock Hill | Alpharetta | Rock Hill | Alpharetta | |
| Jan | 53°F(11°C) | 52°F(11°C) | 32°F(0°C) | 33°F(1°C) | 4.3 in(108 mm) | 5.1 in(130 mm) |
| Feb | 58°F(14°C) | 57°F(14°C) | 35°F(2°C) | 37°F(3°C) | 3.7 in(94 mm) | 5.3 in(134 mm) |
| Mar | 65°F(18°C) | 65°F(18°C) | 42°F(5°C) | 43°F(6°C) | 4.6 in(118 mm) | 5.7 in(146 mm) |
| Apr | 74°F(23°C) | 74°F(23°C) | 49°F(10°C) | 50°F(10°C) | 3.7 in(95 mm) | 4.7 in(120 mm) |
| May | 81°F(27°C) | 81°F(27°C) | 58°F(15°C) | 59°F(15°C) | 3.0 in(77 mm) | 3.9 in(100 mm) |
| Jun | 88°F(31°C) | 87°F(30°C) | 66°F(19°C) | 66°F(19°C) | 4.3 in(108 mm) | 4.3 in(109 mm) |
| Jul | 91°F(33°C) | 89°F(32°C) | 70°F(21°C) | 70°F(21°C) | 3.6 in(92 mm) | 4.7 in(119 mm) |
| Aug | 89°F(31°C) | 88°F(31°C) | 69°F(21°C) | 69°F(21°C) | 4.1 in(105 mm) | 4.4 in(113 mm) |
| Sep | 83°F(28°C) | 83°F(28°C) | 63°F(17°C) | 63°F(17°C) | 4.2 in(106 mm) | 4.1 in(103 mm) |
| Oct | 74°F(23°C) | 74°F(23°C) | 51°F(11°C) | 52°F(11°C) | 3.7 in(93 mm) | 3.6 in(91 mm) |
| Nov | 64°F(18°C) | 63°F(17°C) | 40°F(5°C) | 41°F(5°C) | 3.4 in(86 mm) | 3.9 in(100 mm) |
| Dec | 56°F(13°C) | 54°F(12°C) | 35°F(2°C) | 35°F(2°C) | 3.9 in(99 mm) | 5.5 in(140 mm) |
1991–2020 averages, by calendar month.