Lawton weather by month
What a typical year looks like in Lawton, Iowa: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Sioux City Airport, 19 km from Lawton; records cover 1889–2026.
The year at a glance
- Precipitation a year
- 29.3 in743 mm
- Snow a year
- 36 in91 cm
- Last spring freeze
- Apr 27
- First fall freeze
- Oct 1
- Heating degree days
- 6,861
- Cooling degree days
- 865
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −10°−23° (heating, 99%) and 95°35° (cooling, 1%).
Month by month
Lawton in January
Highs average 30°−1° and lows 10°−12°, with 0.69 in18 mm of precipitation and 8 in20 cm of snow in a typical January.
- Record high
- 71°22° (2002)
- Record low
- −35°−37° (1912)
- Heating degree days
- 1396
- Cooling degree days
- 0
Lawton in February
Highs average 34°1° and lows 15°−10°, with 0.86 in22 mm of precipitation and 9 in22 cm of snow in a typical February.
- Record high
- 77°25° (2024)
- Record low
- −31°−35° (1899)
- Heating degree days
- 1134
- Cooling degree days
- 0
Lawton in March
Highs average 48°9° and lows 26°−3°, with 1.8 in45 mm of precipitation and 6 in14 cm of snow in a typical March.
- Record high
- 95°35° (2026)
- Record low
- −22°−30° (1960)
- Heating degree days
- 877
- Cooling degree days
- 1
Lawton in April
Highs average 61°16° and lows 37°3°, with 3.2 in80 mm of precipitation and 2.3 in5.8 cm of snow in a typical April.
- Record high
- 98°37° (1910)
- Record low
- −2°−19° (1975)
- Heating degree days
- 490
- Cooling degree days
- 7
Lawton in May
Highs average 72°22° and lows 49°9°, with 3.9 in98 mm of precipitation in a typical May.
- Record high
- 106°41° (2013)
- Record low
- 23°−5° (1909)
- Heating degree days
- 197
- Cooling degree days
- 57
Lawton in June
Highs average 82°28° and lows 59°15°, with 4.4 in110 mm of precipitation in a typical June.
- Record high
- 108°42° (1988)
- Record low
- 38°3° (1945)
- Heating degree days
- 26
- Cooling degree days
- 195
Lawton in July
Highs average 85°29° and lows 63°17°, with 3.4 in85 mm of precipitation in a typical July.
- Record high
- 111°44° (1936)
- Record low
- 41°5° (1895)
- Heating degree days
- 4
- Cooling degree days
- 289
Lawton in August
Highs average 83°28° and lows 61°16°, with 3.9 in100 mm of precipitation in a typical August.
- Record high
- 108°42° (1934)
- Record low
- 37°3° (1950)
- Heating degree days
- 11
- Cooling degree days
- 219
Lawton in September
Highs average 77°25° and lows 51°11°, with 2.8 in72 mm of precipitation in a typical September.
- Record high
- 103°39° (1895)
- Record low
- 24°−4° (1945)
- Heating degree days
- 121
- Cooling degree days
- 88
Lawton in OctoberThis month
Highs average 63°17° and lows 38°3°, with 2.2 in56 mm of precipitation and 0.8 in2 cm of snow in a typical October.
- Record high
- 96°36° (1938)
- Record low
- 5°−15° (1925)
- Heating degree days
- 464
- Cooling degree days
- 9
Lawton in November
Highs average 47°8° and lows 25°−4°, with 1.3 in32 mm of precipitation and 3 in8 cm of snow in a typical November.
- Record high
- 82°28° (2006)
- Record low
- −9°−23° (1891)
- Heating degree days
- 873
- Cooling degree days
- 0
Lawton in December
Highs average 33°1° and lows 15°−10°, with 0.99 in25 mm of precipitation and 8 in19 cm of snow in a typical December.
- Record high
- 71°22° (1939)
- Record low
- −28°−33° (1917)
- Heating degree days
- 1268
- Cooling degree days
- 0