McCook weather by month
What a typical year looks like in McCook, Nebraska: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Mccook Municipal Airport, 3 km from McCook; records cover 1967–2026.
The year at a glance
- Precipitation a year
- 20.1 in509 mm
- Snow a year
- Rare
- Last spring freeze
- May 3
- First fall freeze
- Oct 10
- Heating degree days
- 5,778
- Cooling degree days
- 1,154
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −3°−19° (heating, 99%) and 104°40° (cooling, 1%).
Month by month
McCook in January
Highs average 41°5° and lows 16°−9°, with 0.26 in6.6 mm of precipitation in a typical January.
- Record high
- 77°25° (2002)
- Record low
- −20°−29° (1984)
- Heating degree days
- 1127
- Cooling degree days
- 0
McCook in February
Highs average 45°7° and lows 19°−7°, with 0.35 in8.9 mm of precipitation in a typical February.
- Record high
- 82°28° (1970)
- Record low
- −24°−31° (2025)
- Heating degree days
- 936
- Cooling degree days
- 0
McCook in March
Highs average 56°13° and lows 27°−3°, with 0.9 in23 mm of precipitation in a typical March.
- Record high
- 98°37° (2026)
- Record low
- −10°−23° (2019)
- Heating degree days
- 720
- Cooling degree days
- 0
McCook in April
Highs average 65°18° and lows 36°2°, with 1.8 in46 mm of precipitation in a typical April.
- Record high
- 97°36° (2002)
- Record low
- 3°−16° (2018)
- Heating degree days
- 437
- Cooling degree days
- 5
McCook in May
Highs average 75°24° and lows 48°9°, with 3.1 in78 mm of precipitation in a typical May.
- Record high
- 106°41° (2002)
- Record low
- 23°−5° (1989)
- Heating degree days
- 178
- Cooling degree days
- 58
McCook in June
Highs average 86°30° and lows 58°15°, with 3.1 in78 mm of precipitation in a typical June.
- Record high
- 115°46° (2012)
- Record low
- 37°3° (1989)
- Heating degree days
- 20
- Cooling degree days
- 236
McCook in July
Highs average 91°33° and lows 64°18°, with 3.3 in84 mm of precipitation in a typical July.
- Record high
- 111°44° (2001)
- Record low
- 46°8° (1987)
- Heating degree days
- 2
- Cooling degree days
- 392
McCook in August
Highs average 89°31° and lows 62°17°, with 3.1 in80 mm of precipitation in a typical August.
- Record high
- 109°43° (1969)
- Record low
- 42°6° (2015)
- Heating degree days
- 5
- Cooling degree days
- 319
McCook in September
Highs average 81°27° and lows 52°11°, with 1.6 in41 mm of precipitation in a typical September.
- Record high
- 106°41° (2013)
- Record low
- 23°−5° (1984)
- Heating degree days
- 88
- Cooling degree days
- 131
McCook in OctoberThis month
Highs average 68°20° and lows 38°3°, with 1.4 in36 mm of precipitation in a typical October.
- Record high
- 97°36° (1967)
- Record low
- 2°−17° (2020)
- Heating degree days
- 398
- Cooling degree days
- 13
McCook in November
Highs average 53°12° and lows 25°−4°, with 0.61 in15 mm of precipitation in a typical November.
- Record high
- 89°32° (2007)
- Record low
- −7°−22° (1975)
- Heating degree days
- 771
- Cooling degree days
- 0
McCook in December
Highs average 42°6° and lows 17°−8°, with 0.44 in11 mm of precipitation in a typical December.
- Record high
- 78°26° (2021)
- Record low
- −23°−31° (1983)
- Heating degree days
- 1096
- Cooling degree days
- 0