Collinsville weather by month
What a typical year looks like in Collinsville, Oklahoma: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Tulsa International Airport, 19 km from Collinsville; records cover 1905–2026.
The year at a glance
- Precipitation a year
- 41 in1040 mm
- Snow a year
- 9 in22 cm
- Last spring freeze
- Mar 31
- First fall freeze
- Nov 3
- Heating degree days
- 3,451
- Cooling degree days
- 2,128
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 12°−11° (heating, 99%) and 103°39° (cooling, 1%).
Month by month
Collinsville in January
Highs average 49°9° and lows 28°−2°, with 1.6 in41 mm of precipitation and 1.9 in4.8 cm of snow in a typical January.
- Record high
- 82°28° (1909)
- Record low
- −16°−27° (1930)
- Heating degree days
- 823
- Cooling degree days
- 0
Collinsville in February
Highs average 54°12° and lows 32°0°, with 1.6 in41 mm of precipitation and 2.4 in6.1 cm of snow in a typical February.
- Record high
- 90°32° (1911)
- Record low
- −15°−26° (1905)
- Heating degree days
- 622
- Cooling degree days
- 2
Collinsville in March
Highs average 63°17° and lows 41°5°, with 3.1 in79 mm of precipitation and 1.9 in4.8 cm of snow in a typical March.
- Record high
- 99°37° (1907)
- Record low
- −3°−19° (1948)
- Heating degree days
- 418
- Cooling degree days
- 15
Collinsville in April
Highs average 72°22° and lows 50°10°, with 4.4 in111 mm of precipitation in a typical April.
- Record high
- 102°39° (1972)
- Record low
- 22°−6° (1920)
- Heating degree days
- 179
- Cooling degree days
- 53
Collinsville in May
Highs average 80°27° and lows 60°15°, with 5.7 in146 mm of precipitation in a typical May.
- Record high
- 100°38° (1934)
- Record low
- 32°0° (1909)
- Heating degree days
- 41
- Cooling degree days
- 183
Collinsville in June
Highs average 88°31° and lows 69°20°, with 4.7 in118 mm of precipitation in a typical June.
- Record high
- 108°42° (1911)
- Record low
- 49°9° (1907)
- Heating degree days
- 1
- Cooling degree days
- 407
Collinsville in July
Highs average 94°34° and lows 73°23°, with 3.8 in96 mm of precipitation in a typical July.
- Record high
- 113°45° (1936)
- Record low
- 51°11° (1971)
- Heating degree days
- 0
- Cooling degree days
- 569
Collinsville in August
Highs average 93°34° and lows 72°22°, with 3.4 in86 mm of precipitation in a typical August.
- Record high
- 115°46° (1936)
- Record low
- 48°9° (1915)
- Heating degree days
- 0
- Cooling degree days
- 535
Collinsville in September
Highs average 85°29° and lows 63°17°, with 3.9 in98 mm of precipitation in a typical September.
- Record high
- 109°43° (1939)
- Record low
- 35°2° (1942)
- Heating degree days
- 17
- Cooling degree days
- 281
Collinsville in OctoberThis month
Highs average 74°23° and lows 51°11°, with 3.8 in96 mm of precipitation in a typical October.
- Record high
- 98°37° (1931)
- Record low
- 15°−9° (1917)
- Heating degree days
- 160
- Cooling degree days
- 74
Collinsville in November
Highs average 61°16° and lows 39°4°, with 2.7 in68 mm of precipitation and 0.8 in2 cm of snow in a typical November.
- Record high
- 89°32° (1909)
- Record low
- 10°−12° (1976)
- Heating degree days
- 446
- Cooling degree days
- 8
Collinsville in December
Highs average 51°11° and lows 31°0°, with 2.4 in62 mm of precipitation and 1.7 in4.3 cm of snow in a typical December.
- Record high
- 86°30° (2025)
- Record low
- −8°−22° (1989)
- Heating degree days
- 744
- Cooling degree days
- 1