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Monthly climate in Grand Bay, Alabama, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Grand Bay features a humid subtropical climate (Cfa). Temperatures typically range between 12 °C (54 °F) and 28 °C (82 °F) through the year, but rarely can drop to -6 °C (22 °F) or can rise to as high as 36 °C (96 °F). The average annual precipitation amounts to about 1637 mm (64.5 inches) and receives 155 rainy days on the 1 mm (0.04 inches) threshold annually. Grand Bay enjoys an average of 3296 hours of sunshine throughout the year, and daylight varies from 10 hours 11 minutes to 14 hours 4 minutes per day.

Monthly average temperatures in Grand Bay, Alabama, United States §

The warmest months in Grand Bay are June, July and August, with daily mean temperatures ranging from 27 to 28 °C (81 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 12 to 15 °C (54 - 59 °F) throughout the day. On average each year, Grand Bay experiences 164 days above 25 °C (77.0 °F) and 3 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Grand Bay, Alabama, United States. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 25°C
(77°F)		 25°C
(77°F)		 28°C
(83°F)		 30°C
(86°F)		 32°C
(90°F)		 34°C
(94°F)		 35°C
(95°F)		 35°C
(95°F)		 36°C
(96°F)		 34°C
(94°F)		 27°C
(81°F)		 26°C
(78°F)
Mean maximum 22°C
(73°F)		 24°C
(75°F)		 26°C
(79°F)		 28°C
(82°F)		 31°C
(87°F)		 32°C
(90°F)		 34°C
(94°F)		 33°C
(92°F)		 33°C
(92°F)		 31°C
(88°F)		 26°C
(79°F)		 24°C
(75°F)
Average high 16°C
(61°F)		 19°C
(66°F)		 21°C
(71°F)		 24°C
(75°F)		 27°C
(82°F)		 30°C
(86°F)		 31°C
(87°F)		 31°C
(87°F)		 30°C
(86°F)		 27°C
(80°F)		 21°C
(70°F)		 18°C
(64°F)
Daily mean 12°C
(54°F)		 15°C
(59°F)		 18°C
(64°F)		 20°C
(68°F)		 24°C
(76°F)		 27°C
(81°F)		 28°C
(82°F)		 28°C
(82°F)		 26°C
(80°F)		 23°C
(73°F)		 16°C
(61°F)		 14°C
(57°F)
Average low 8°C
(47°F)		 11°C
(52°F)		 14°C
(57°F)		 16°C
(61°F)		 21°C
(69°F)		 24°C
(76°F)		 25°C
(78°F)		 25°C
(78°F)		 23°C
(74°F)		 19°C
(67°F)		 12°C
(53°F)		 10°C
(51°F)
Mean minimum -1°C
(30°F)		 2°C
(36°F)		 4°C
(39°F)		 8°C
(47°F)		 15°C
(59°F)		 21°C
(70°F)		 24°C
(75°F)		 23°C
(74°F)		 19°C
(66°F)		 11°C
(51°F)		 4°C
(39°F)		 2°C
(36°F)
Minimum -6°C
(22°F)		 -5°C
(24°F)		 2°C
(35°F)		 6°C
(44°F)		 11°C
(53°F)		 19°C
(66°F)		 23°C
(74°F)		 23°C
(73°F)		 15°C
(60°F)		 5°C
(42°F)		 -1°C
(31°F)		 0°C
(33°F)

Compare climate in Grand Bay with other places

Compare temperature, precipitation, sunshine, UV index in Grand Bay, Alabama, United States with other places around the world.

Monthly average precipitation in Grand Bay, Alabama, United States §

Grand Bay usually has the most precipitation in June, August and September, with an average of 18 rainy days and 207 mm (8.2 inches) of precipitation per month. The driest months in Grand Bay are January, March and November. On average, 79 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Grand Bay, Alabama, United States. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 95 (3.7) 109 (4.3) 86 (3.4) 120 (4.7) 131 (5.2) 244 (9.6) 163 (6.4) 208 (8.2) 170 (6.7) 134 (5.3) 56 (2.2) 121 (4.8)
Average precipitation days (≥ 1 mm) 8 12 11 10 10 19 21 23 14 10 5 12

Monthly sunshine hours in Grand Bay, Alabama, United States §

The sunniest months in Grand Bay are May, July and August, when the sun shines an average of 10 hours 22 minutes a day. Least sunny months in Grand Bay: January, February and December receive an average of 6 hours 50 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Grand Bay, Alabama, United States. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 181 216 281 292 328 300 321 314 282 287 265 224
Mean daily daylight hours 10h 25m 11h 6m 12h 0m 12h 55m 13h 41m 14h 4m 13h 51m 13h 11m 12h 18m 11h 23m 10h 35m 10h 11m

Solar UV radiation in Grand Bay, Alabama, United States §

Grand Bay experiences the highest level of ultraviolet (UV) radiation in April, July and August, when the maximum UV index can reach values of 11 - 12, which corresponds to the Extreme category of sun exposure. January, November and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Grand Bay UV Index data.

Average daily maximum UV levels by month for Grand Bay, Alabama, United States. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 5 8 9 11 11 11 12 11 10 8 6 4

Detailed Monthly Weather Insights for Grand Bay, Alabama, United States

Discover in-depth weather details for every month in Grand Bay. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Grand Bay's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.