St. Marys, Georgia Climate
United States
Pop. 17,968 Elev. 11 m / 36 ft
TZ: America/New_York (UTC-4) ·
St. Marys has warm summers with average highs of 89°F (32°C) in July, and cool winters averaging 42°F (6°C) in January. Humidity pushes the summer feels-like temperature to around 109°F (43°C). Rain falls on about 69 days per year (50.9 in / 1292 mm total). The city averages 155 sunny days per year and around 53 thunderstorm days. Ocean water temperatures reach 87°F (30°C) in summer.
| Temperature | 89°F (32°C) high | 42°F (5°C) low |
| Feels like | 109°F (43°C) high | 39°F (4°C) low |
| Rain | 69 days | 50.9 in (1292 mm) /yr |
| Sky | 155 sunny | 53 stormy |
| Wind | 3.6 mph (1.6 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Feb, Mar, Apr, Jun, Sep, Nov, Dec
Sky & Air by Month
Cloud cover (%)
44
Jan 42
Feb 39
Mar 39
Apr 58
May 57
Jun 53
Jul 70
Aug 45
Sep 44
Oct 28
Nov 48
Dec Humidity (%)
65
Jan 77
Feb 68
Mar 72
Apr 73
May 79
Jun 79
Jul 81
Aug 77
Sep 77
Oct 70
Nov 77
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 18 mi Jacksonville International Airport (JAX)
Ski resort 170 mi
National park 18 mi Pumpkin Hill Creek Preserve State Park
Mountain peak
(4,990 ft) 317 mi Shortoff Mountain
Hospital 5 mi Southeast Georgia Health System - Camden Campus
Hiking trail 89 mi East Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 58°F 14°C | 42°F 5°C | 4.5 in 115 mm | 0.5 in11 mm | 17 |
| February | 68°F 20°C | 53°F 12°C | 2.1 in 54 mm | — | 16 |
| March | 71°F 22°C | 55°F 13°C | 4.1 in 105 mm | — | 15 |
| April | 78°F 26°C | 64°F 18°C | 1.0 in 26 mm | — | 14 |
| May | 85°F 29°C | 71°F 22°C | 5.7 in 144 mm | — | 7 |
| June | 86°F 30°C | 75°F 24°C | 4.7 in 119 mm | — | 5 |
| July | 89°F 32°C | 78°F 25°C | 3.4 in 86 mm | — | 10 |
| August | 86°F 30°C | 77°F 25°C | 13.0 in 330 mm | — | 4 |
| September | 83°F 28°C | 73°F 23°C | 3.5 in 90 mm | — | 15 |
| October | 76°F 25°C | 65°F 18°C | 6.1 in 156 mm | — | 18 |
| November | 73°F 23°C | 55°F 13°C | 0.1 in 2 mm | — | 22 |
| December | 66°F 19°C | 51°F 11°C | 2.6 in 65 mm | — | 12 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 17 | 1 |
| February | 16 | 1 |
| March | 15 | 5 |
| April | 14 | 2 |
| May | 7 | 5 |
| June | 5 | 6 |
| July | 10 | 5 |
| August | 4 | 18 |
| September | 15 | 4 |
| October | 18 | 4 |
| November | 22 | 0 |
| December | 12 | 2 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 60°F 15°C | 50°F 10°C |
| February | 60°F 16°C | 60°F 16°C |
| March | 66°F 19°C | 62°F 17°C |
| April | 75°F 24°C | 71°F 22°C |
| May | 81°F 27°C | 78°F 26°C |
| June | 82°F 28°C | 82°F 28°C |
| July | 86°F 30°C | 84°F 29°C |
| August | 87°F 30°C | 84°F 29°C |
| September | 83°F 28°C | 79°F 26°C |
| October | 80°F 27°C | 72°F 22°C |
| November | 71°F 22°C | 64°F 18°C |
| December | 66°F 19°C | 58°F 15°C |