St. Joseph weather by month
What a typical year looks like in St. Joseph, Louisiana: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at St. Joseph 3 N, 3 km from St. Joseph; records cover 1894–2026.
The year at a glance
- Precipitation a year
- 58.2 in1479 mm
- Snow a year
- Rare
- Last spring freeze
- Mar 6
- First fall freeze
- Nov 16
- Heating degree days
- 2,171
- Cooling degree days
- 2,396
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 23°−5° (heating, 99%) and 100°38° (cooling, 1%).
Month by month
St. Joseph in January
Highs average 59°15° and lows 36°2°, with 6.3 in159 mm of precipitation in a typical January.
- Record high
- 85°29° (2022)
- Record low
- −8°−22° (1940)
- Heating degree days
- 558
- Cooling degree days
- 2
St. Joseph in February
Highs average 63°17° and lows 39°4°, with 5.5 in140 mm of precipitation in a typical February.
- Record high
- 88°31° (1995)
- Record low
- 2°−17° (1951)
- Heating degree days
- 403
- Cooling degree days
- 6
St. Joseph in March
Highs average 70°21° and lows 46°8°, with 5.7 in145 mm of precipitation in a typical March.
- Record high
- 92°33° (1929)
- Record low
- 18°−8° (1980)
- Heating degree days
- 243
- Cooling degree days
- 27
St. Joseph in April
Highs average 78°25° and lows 53°12°, with 4.9 in123 mm of precipitation in a typical April.
- Record high
- 103°39° (2025)
- Record low
- 29°−2° (1936)
- Heating degree days
- 90
- Cooling degree days
- 93
St. Joseph in May
Highs average 85°29° and lows 62°17°, with 4.4 in111 mm of precipitation in a typical May.
- Record high
- 105°41° (2026)
- Record low
- 32°0° (1925)
- Heating degree days
- 11
- Cooling degree days
- 272
St. Joseph in June
Highs average 91°33° and lows 69°20°, with 4.2 in106 mm of precipitation in a typical June.
- Record high
- 110°43° (2025)
- Record low
- 47°8° (1930)
- Heating degree days
- 0
- Cooling degree days
- 436
St. Joseph in July
Highs average 93°34° and lows 71°22°, with 4.7 in119 mm of precipitation in a typical July.
- Record high
- 106°41° (1924)
- Record low
- 52°11° (1967)
- Heating degree days
- 0
- Cooling degree days
- 525
St. Joseph in August
Highs average 93°34° and lows 70°21°, with 4.4 in112 mm of precipitation in a typical August.
- Record high
- 106°41° (2000)
- Record low
- 52°11° (1931)
- Heating degree days
- 0
- Cooling degree days
- 511
St. Joseph in September
Highs average 90°32° and lows 64°18°, with 3.6 in90 mm of precipitation in a typical September.
- Record high
- 107°42° (2000)
- Record low
- 35°2° (1967)
- Heating degree days
- 5
- Cooling degree days
- 359
St. Joseph in OctoberThis month
Highs average 81°27° and lows 53°11°, with 3.8 in97 mm of precipitation in a typical October.
- Record high
- 100°38° (2024)
- Record low
- 23°−5° (1917)
- Heating degree days
- 85
- Cooling degree days
- 133
St. Joseph in November
Highs average 70°21° and lows 43°6°, with 5.4 in137 mm of precipitation in a typical November.
- Record high
- 90°32° (1914)
- Record low
- 16°−9° (1916)
- Heating degree days
- 284
- Cooling degree days
- 24
St. Joseph in December
Highs average 61°16° and lows 38°3°, with 5.6 in141 mm of precipitation in a typical December.
- Record high
- 88°31° (1916)
- Record low
- 5°−15° (1989)
- Heating degree days
- 492
- Cooling degree days
- 8