Port Gibson weather by month
What a typical year looks like in Port Gibson, Mississippi: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Port Gibson 1 NE, 3 km from Port Gibson; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 56.3 in1429 mm
- Snow a year
- 0.5 in1.3 cm
- Last spring freeze
- Mar 15
- First fall freeze
- Nov 7
- Heating degree days
- 2,161
- Cooling degree days
- 2,472
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 20°−7° (heating, 99%) and 98°37° (cooling, 1%).
Month by month
Port Gibson in January
Highs average 60°15° and lows 36°2°, with 6.1 in155 mm of precipitation and 0.2 in0.5 cm of snow in a typical January.
- Record high
- 88°31° (2012)
- Record low
- −5°−21° (1940)
- Heating degree days
- 546
- Cooling degree days
- 6
Port Gibson in February
Highs average 64°18° and lows 38°3°, with 5.1 in129 mm of precipitation and 0.2 in0.5 cm of snow in a typical February.
- Record high
- 87°31° (1977)
- Record low
- −1°−18° (1951)
- Heating degree days
- 404
- Cooling degree days
- 9
Port Gibson in March
Highs average 71°22° and lows 46°8°, with 6 in153 mm of precipitation and 0.1 in0.3 cm of snow in a typical March.
- Record high
- 94°34° (1929)
- Record low
- 15°−9° (1980)
- Heating degree days
- 241
- Cooling degree days
- 38
Port Gibson in April
Highs average 78°26° and lows 53°11°, with 5.5 in138 mm of precipitation in a typical April.
- Record high
- 94°34° (1987)
- Record low
- 24°−4° (2025)
- Heating degree days
- 95
- Cooling degree days
- 102
Port Gibson in May
Highs average 85°29° and lows 62°16°, with 4.5 in114 mm of precipitation in a typical May.
- Record high
- 99°37° (1911)
- Record low
- 34°1° (1925)
- Heating degree days
- 12
- Cooling degree days
- 267
Port Gibson in June
Highs average 91°33° and lows 69°21°, with 4.1 in103 mm of precipitation in a typical June.
- Record high
- 104°40° (1936)
- Record low
- 45°7° (1966)
- Heating degree days
- 0
- Cooling degree days
- 444
Port Gibson in July
Highs average 93°34° and lows 72°22°, with 3.9 in100 mm of precipitation in a typical July.
- Record high
- 104°40° (1930)
- Record low
- 51°11° (1967)
- Heating degree days
- 0
- Cooling degree days
- 538
Port Gibson in August
Highs average 93°34° and lows 71°22°, with 3.6 in90 mm of precipitation in a typical August.
- Record high
- 107°42° (1909)
- Record low
- 51°11° (1927)
- Heating degree days
- 0
- Cooling degree days
- 532
Port Gibson in September
Highs average 89°32° and lows 65°19°, with 3.8 in95 mm of precipitation in a typical September.
- Record high
- 105°41° (2000)
- Record low
- 35°2° (1967)
- Heating degree days
- 3
- Cooling degree days
- 369
Port Gibson in OctoberThis month
Highs average 80°27° and lows 53°12°, with 4.1 in104 mm of precipitation in a typical October.
- Record high
- 97°36° (1955)
- Record low
- 23°−5° (1952)
- Heating degree days
- 84
- Cooling degree days
- 134
Port Gibson in November
Highs average 69°21° and lows 43°6°, with 4.4 in113 mm of precipitation in a typical November.
- Record high
- 89°32° (1921)
- Record low
- 15°−9° (1976)
- Heating degree days
- 296
- Cooling degree days
- 24
Port Gibson in December
Highs average 62°16° and lows 38°3°, with 5.3 in135 mm of precipitation in a typical December.
- Record high
- 84°29° (1982)
- Record low
- 4°−16° (1929)
- Heating degree days
- 480
- Cooling degree days
- 9