Monthly climate in Port Gibson, Mississippi, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Port Gibson features a humid subtropical climate (Cfa).Temperatures typically range between 10 °C (50 °F) and 28 °C (83 °F) through the year, but rarely can drop to -12 °C (11 °F) or can rise to as high as 39 °C (103 °F).The average annual precipitation amounts to about 1425 mm (56.1 inches) and receives 137 rainy days on the 1 mm (0.04 inches) threshold annually.Port Gibson enjoys an average of 3074 hours of sunshine throughout the year, and daylight varies from 10 hours 5 minutes to 14 hours 11 minutes per day.

Monthly average temperatures in Port Gibson, Mississippi, United States §

The warmest months in Port Gibson are June, July and August, with daily mean temperatures ranging from 27 to 28 °C (80 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 10 to 12 °C (50 - 55 °F) throughout the day. On average each year, Port Gibson experiences 180 days above 25 °C (77.0 °F) and 15 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Port Gibson, Mississippi, 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 28°C
(82°F)
29°C
(85°F)
31°C
(88°F)
31°C
(88°F)
34°C
(94°F)
37°C
(98°F)
38°C
(101°F)
37°C
(99°F)
39°C
(103°F)
38°C
(100°F)
29°C
(84°F)
28°C
(83°F)
Mean maximum 25°C
(77°F)
27°C
(81°F)
29°C
(84°F)
30°C
(86°F)
33°C
(92°F)
35°C
(95°F)
36°C
(98°F)
36°C
(98°F)
37°C
(98°F)
34°C
(93°F)
27°C
(82°F)
26°C
(79°F)
Average high 15°C
(60°F)
18°C
(65°F)
22°C
(73°F)
24°C
(76°F)
29°C
(84°F)
32°C
(89°F)
33°C
(92°F)
33°C
(92°F)
32°C
(90°F)
27°C
(81°F)
20°C
(68°F)
17°C
(63°F)
Daily mean 10°C
(50°F)
12°C
(55°F)
17°C
(62°F)
19°C
(66°F)
24°C
(75°F)
27°C
(80°F)
28°C
(83°F)
28°C
(82°F)
26°C
(80°F)
21°C
(70°F)
14°C
(57°F)
12°C
(53°F)
Average low 5°C
(41°F)
7°C
(46°F)
11°C
(53°F)
13°C
(56°F)
19°C
(66°F)
22°C
(72°F)
24°C
(75°F)
23°C
(74°F)
21°C
(71°F)
16°C
(61°F)
8°C
(47°F)
7°C
(45°F)
Mean minimum -6°C
(22°F)
-2°C
(28°F)
1°C
(34°F)
4°C
(40°F)
12°C
(55°F)
18°C
(65°F)
21°C
(71°F)
20°C
(68°F)
16°C
(61°F)
6°C
(44°F)
-1°C
(31°F)
-1°C
(30°F)
Minimum -12°C
(11°F)
-9°C
(16°F)
-2°C
(28°F)
3°C
(37°F)
10°C
(50°F)
15°C
(59°F)
19°C
(66°F)
19°C
(67°F)
11°C
(53°F)
2°C
(35°F)
-5°C
(23°F)
-3°C
(27°F)

Compare climate in Port Gibson with other places

Compare temperature, precipitation, sunshine, UV index in Port Gibson, Mississippi, United States with other places around the world.

Monthly average precipitation in Port Gibson, Mississippi, United States §

Port Gibson usually has the most precipitation in February, April and May, with an average of 11 rainy days and 153 mm (6.0 inches) of precipitation per month.The driest months in Port Gibson are July, September and November. On average, 89 mm (3.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Port Gibson, Mississippi, 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) 113 (4.5) 151 (5.9) 121 (4.7) 168 (6.6) 140 (5.5) 127 (5.0) 99 (3.9) 115 (4.5) 82 (3.2) 107 (4.2) 86 (3.4) 117 (4.6)
Average precipitation days (≥ 1 mm) 9 13 12 10 11 15 16 15 8 9 8 11

Monthly sunshine hours in Port Gibson, Mississippi, United States §

The sunniest months in Port Gibson are June, July and August, when the sun shines an average of 10 hours 18 minutes a day.Least sunny months in Port Gibson: January, February and December receive an average of 5 hours 53 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Port Gibson, Mississippi, 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 162 175 232 266 300 305 331 311 282 267 241 198
Mean daily daylight hours 10h 18m 11h 3m 12h 0m 12h 58m 13h 47m 14h 11m 13h 58m 13h 15m 12h 18m 11h 20m 10h 30m 10h 5m

Solar UV radiation in Port Gibson, Mississippi, United States §

Port Gibson experiences the highest level of ultraviolet (UV) radiation in April, June and July, 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 Port Gibson UV Index data.

Average daily maximum UV levels by month for Port Gibson, Mississippi, 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) 4 7 9 11 11 12 12 11 10 8 6 4