Norman weather by month
What a typical year looks like in Norman, Oklahoma: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at NORMAN 3SSE, 11 km from Norman; records cover 1894–2026.
The year at a glance
- Precipitation a year
- 37.7 in956 mm
- Snow a year
- 4 in10 cm
- Last spring freeze
- Apr 2
- First fall freeze
- Nov 7
- Heating degree days
- 3,477
- Cooling degree days
- 1,944
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 13°−11° (heating, 99%) and 103°39° (cooling, 1%).
Month by month
Norman in January
Highs average 50°10° and lows 28°−2°, with 1.4 in35 mm of precipitation and 1.2 in3 cm of snow in a typical January.
- Record high
- 81°27° (1909)
- Record low
- −9°−23° (1930)
- Heating degree days
- 812
- Cooling degree days
- 0
Norman in February
Highs average 54°12° and lows 31°0°, with 1.6 in41 mm of precipitation and 1.2 in3 cm of snow in a typical February.
- Record high
- 90°32° (1904)
- Record low
- −17°−27° (1899)
- Heating degree days
- 621
- Cooling degree days
- 1
Norman in March
Highs average 63°17° and lows 40°4°, with 2.8 in71 mm of precipitation and 0.2 in0.5 cm of snow in a typical March.
- Record high
- 97°36° (1916)
- Record low
- 1°−17° (1948)
- Heating degree days
- 428
- Cooling degree days
- 9
Norman in April
Highs average 71°22° and lows 48°9°, with 3.5 in88 mm of precipitation in a typical April.
- Record high
- 99°37° (1972)
- Record low
- 20°−7° (1936)
- Heating degree days
- 198
- Cooling degree days
- 42
Norman in May
Highs average 79°26° and lows 58°15°, with 5.1 in131 mm of precipitation in a typical May.
- Record high
- 102°39° (2003)
- Record low
- 28°−2° (1903)
- Heating degree days
- 48
- Cooling degree days
- 160
Norman in June
Highs average 87°31° and lows 67°20°, with 4.8 in122 mm of precipitation in a typical June.
- Record high
- 109°43° (1896)
- Record low
- 43°6° (1917)
- Heating degree days
- 1
- Cooling degree days
- 368
Norman in July
Highs average 93°34° and lows 71°22°, with 3.7 in94 mm of precipitation in a typical July.
- Record high
- 112°44° (1917)
- Record low
- 52°11° (1971)
- Heating degree days
- 0
- Cooling degree days
- 522
Norman in August
Highs average 92°33° and lows 70°21°, with 3.6 in92 mm of precipitation in a typical August.
- Record high
- 116°47° (1936)
- Record low
- 47°8° (1915)
- Heating degree days
- 0
- Cooling degree days
- 501
Norman in September
Highs average 84°29° and lows 62°17°, with 3.7 in93 mm of precipitation in a typical September.
- Record high
- 107°42° (1939)
- Record low
- 32°0° (1912)
- Heating degree days
- 18
- Cooling degree days
- 264
Norman in OctoberThis month
Highs average 74°23° and lows 50°10°, with 3.4 in87 mm of precipitation in a typical October.
- Record high
- 100°38° (1898)
- Record low
- 10°−12° (1917)
- Heating degree days
- 164
- Cooling degree days
- 71
Norman in November
Highs average 62°17° and lows 39°4°, with 2 in52 mm of precipitation and 0.5 in1.3 cm of snow in a typical November.
- Record high
- 91°33° (1896)
- Record low
- 5°−15° (1898)
- Heating degree days
- 446
- Cooling degree days
- 6
Norman in December
Highs average 52°11° and lows 31°−1°, with 2 in51 mm of precipitation and 1 in2.5 cm of snow in a typical December.
- Record high
- 86°30° (1955)
- Record low
- −3°−19° (1924)
- Heating degree days
- 741
- Cooling degree days
- 0