Grayson weather by month
What a typical year looks like in Grayson, Louisiana: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Columbia Lock, 13 km from Grayson; records cover 1966–2026.
The year at a glance
- Precipitation a year
- 59.3 in1505 mm
- Snow a year
- 0.3 in0.8 cm
- Last spring freeze
- Feb 28
- First fall freeze
- Nov 23
- Heating degree days
- 2,243
- Cooling degree days
- 2,447
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 101°38° (cooling, 1%).
Month by month
Grayson in January
Highs average 57°14° and lows 37°3°, with 6 in152 mm of precipitation and 0.1 in0.3 cm of snow in a typical January.
- Record high
- 84°29° (2022)
- Record low
- 13°−11° (2018)
- Heating degree days
- 565
- Cooling degree days
- 4
Grayson in February
Highs average 61°16° and lows 39°4°, with 5.5 in139 mm of precipitation and 0.2 in0.5 cm of snow in a typical February.
- Record high
- 87°31° (2012)
- Record low
- 13°−11° (2021)
- Heating degree days
- 425
- Cooling degree days
- 8
Grayson in March
Highs average 69°21° and lows 46°8°, with 5.1 in131 mm of precipitation in a typical March.
- Record high
- 90°32° (2020)
- Record low
- 19°−7° (2002)
- Heating degree days
- 256
- Cooling degree days
- 28
Grayson in April
Highs average 76°24° and lows 54°12°, with 6.2 in157 mm of precipitation in a typical April.
- Record high
- 93°34° (2006)
- Record low
- 35°2° (2003)
- Heating degree days
- 97
- Cooling degree days
- 86
Grayson in May
Highs average 84°29° and lows 63°17°, with 4.9 in125 mm of precipitation in a typical May.
- Record high
- 96°36° (2018)
- Record low
- 39°4° (2013)
- Heating degree days
- 13
- Cooling degree days
- 270
Grayson in June
Highs average 90°32° and lows 70°21°, with 4.7 in118 mm of precipitation in a typical June.
- Record high
- 104°40° (2011)
- Record low
- 56°13° (2021)
- Heating degree days
- 0
- Cooling degree days
- 445
Grayson in July
Highs average 93°34° and lows 73°23°, with 4.8 in121 mm of precipitation in a typical July.
- Record high
- 102°39° (2000)
- Record low
- 57°14° (2004)
- Heating degree days
- 0
- Cooling degree days
- 547
Grayson in August
Highs average 93°34° and lows 72°22°, with 3.7 in93 mm of precipitation in a typical August.
- Record high
- 106°41° (2000)
- Record low
- 54°12° (2004)
- Heating degree days
- 0
- Cooling degree days
- 542
Grayson in September
Highs average 88°31° and lows 66°19°, with 3.6 in91 mm of precipitation in a typical September.
- Record high
- 106°41° (2000)
- Record low
- 47°8° (2001)
- Heating degree days
- 3
- Cooling degree days
- 361
Grayson in OctoberThis month
Highs average 78°26° and lows 55°13°, with 4.3 in110 mm of precipitation in a typical October.
- Record high
- 100°38° (2019)
- Record low
- 33°1° (2008)
- Heating degree days
- 80
- Cooling degree days
- 127
Grayson in November
Highs average 67°20° and lows 44°7°, with 4.7 in119 mm of precipitation in a typical November.
- Record high
- 88°31° (2016)
- Record low
- 18°−8° (2019)
- Heating degree days
- 295
- Cooling degree days
- 21
Grayson in December
Highs average 59°15° and lows 38°4°, with 5.8 in148 mm of precipitation in a typical December.
- Record high
- 85°29° (2015)
- Record low
- 12°−11° (2022)
- Heating degree days
- 509
- Cooling degree days
- 8