Gillis weather by month
What a typical year looks like in Gillis, Louisiana: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Moss Bluff 2 Nnw, 4 km from Gillis; records cover 2008–2026.
The year at a glance
- Precipitation a year
- 69.3 in1759 mm
- Snow a year
- Rare
- Last spring freeze
- Mar 4
- First fall freeze
- Nov 6
- Heating degree days
- 1,609
- Cooling degree days
- 2,679
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 25°−4° (heating, 99%) and 98°37° (cooling, 1%).
Month by month
Gillis in January
Highs average 63°17° and lows 40°5°, with 6.6 in167 mm of precipitation in a typical January.
- Record high
- 84°29° (2026)
- Record low
- 4°−16° (2025)
- Heating degree days
- 434
- Cooling degree days
- 12
Gillis in February
Highs average 66°19° and lows 45°7°, with 4.3 in109 mm of precipitation in a typical February.
- Record high
- 84°29° (2017)
- Record low
- 12°−11° (2021)
- Heating degree days
- 293
- Cooling degree days
- 20
Gillis in March
Highs average 72°22° and lows 50°10°, with 4.1 in104 mm of precipitation in a typical March.
- Record high
- 88°31° (2008)
- Record low
- 26°−3° (2013)
- Heating degree days
- 172
- Cooling degree days
- 57
Gillis in April
Highs average 78°26° and lows 56°13°, with 5.3 in134 mm of precipitation in a typical April.
- Record high
- 91°33° (2011)
- Record low
- 32°0° (2014)
- Heating degree days
- 53
- Cooling degree days
- 119
Gillis in May
Highs average 85°30° and lows 65°18°, with 5.9 in149 mm of precipitation in a typical May.
- Record high
- 95°35° (2011)
- Record low
- 38°3° (2013)
- Heating degree days
- 5
- Cooling degree days
- 315
Gillis in June
Highs average 90°32° and lows 71°22°, with 7.4 in188 mm of precipitation in a typical June.
- Record high
- 102°39° (2009)
- Record low
- 57°14° (2015)
- Heating degree days
- 0
- Cooling degree days
- 472
Gillis in July
Highs average 92°33° and lows 73°23°, with 5.9 in150 mm of precipitation in a typical July.
- Record high
- 102°39° (2023)
- Record low
- 63°17° (2013)
- Heating degree days
- 0
- Cooling degree days
- 535
Gillis in August
Highs average 92°33° and lows 72°22°, with 7.5 in189 mm of precipitation in a typical August.
- Record high
- 109°43° (2023)
- Record low
- 60°16° (2015)
- Heating degree days
- 0
- Cooling degree days
- 530
Gillis in September
Highs average 88°31° and lows 68°20°, with 6.3 in161 mm of precipitation in a typical September.
- Record high
- 101°38° (2023)
- Record low
- 42°6° (2022)
- Heating degree days
- 0
- Cooling degree days
- 395
Gillis in OctoberThis month
Highs average 81°27° and lows 57°14°, with 5.3 in136 mm of precipitation in a typical October.
- Record high
- 95°35° (2023)
- Record low
- 29°−2° (2017)
- Heating degree days
- 46
- Cooling degree days
- 165
Gillis in November
Highs average 71°22° and lows 48°9°, with 5.1 in130 mm of precipitation in a typical November.
- Record high
- 88°31° (2015)
- Record low
- 23°−5° (2019)
- Heating degree days
- 217
- Cooling degree days
- 42
Gillis in December
Highs average 64°18° and lows 42°6°, with 5.6 in142 mm of precipitation in a typical December.
- Record high
- 83°28° (2021)
- Record low
- 14°−10° (2022)
- Heating degree days
- 389
- Cooling degree days
- 17