Buffalo weather by month
What a typical year looks like in Buffalo, South Dakota: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Buffalo (asos), 2 km from Buffalo; records cover 1998–2026.
The year at a glance
- Precipitation a year
- 13.4 in342 mm
- Snow a year
- Rare
- Last spring freeze
- May 11
- First fall freeze
- Oct 3
- Heating degree days
- 7,668
- Cooling degree days
- 579
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −13°−25° (heating, 99%) and 100°38° (cooling, 1%).
Month by month
Buffalo in January
Highs average 32°0° and lows 11°−12°, with 0.31 in7.9 mm of precipitation in a typical January.
- Record high
- 69°21° (2015)
- Record low
- −31°−35° (2024)
- Heating degree days
- 1359
- Cooling degree days
- 0
Buffalo in February
Highs average 34°1° and lows 13°−11°, with 0.41 in10 mm of precipitation in a typical February.
- Record high
- 72°22° (2005)
- Record low
- −27°−33° (2025)
- Heating degree days
- 1166
- Cooling degree days
- 0
Buffalo in March
Highs average 45°7° and lows 22°−5°, with 0.53 in13 mm of precipitation in a typical March.
- Record high
- 83°28° (2015)
- Record low
- −25°−32° (2014)
- Heating degree days
- 977
- Cooling degree days
- 0
Buffalo in April
Highs average 56°13° and lows 31°0°, with 1.4 in37 mm of precipitation in a typical April.
- Record high
- 90°32° (2001)
- Record low
- −1°−18° (2020)
- Heating degree days
- 647
- Cooling degree days
- 0
Buffalo in May
Highs average 66°19° and lows 42°5°, with 2.5 in63 mm of precipitation in a typical May.
- Record high
- 93°34° (2001)
- Record low
- 19°−7° (2013)
- Heating degree days
- 348
- Cooling degree days
- 10
Buffalo in June
Highs average 77°25° and lows 52°11°, with 2.1 in54 mm of precipitation in a typical June.
- Record high
- 111°44° (2012)
- Record low
- 33°1° (1998)
- Heating degree days
- 97
- Cooling degree days
- 76
Buffalo in July
Highs average 86°30° and lows 58°15°, with 2.2 in55 mm of precipitation in a typical July.
- Record high
- 111°44° (2021)
- Record low
- 43°6° (2008)
- Heating degree days
- 13
- Cooling degree days
- 233
Buffalo in August
Highs average 85°29° and lows 56°13°, with 1.1 in29 mm of precipitation in a typical August.
- Record high
- 106°41° (2018)
- Record low
- 36°2° (2015)
- Heating degree days
- 30
- Cooling degree days
- 199
Buffalo in September
Highs average 75°24° and lows 46°8°, with 1.1 in29 mm of precipitation in a typical September.
- Record high
- 105°41° (2022)
- Record low
- 24°−4° (2000)
- Heating degree days
- 190
- Cooling degree days
- 58
Buffalo in OctoberThis month
Highs average 58°15° and lows 34°1°, with 1.1 in28 mm of precipitation in a typical October.
- Record high
- 94°34° (2011)
- Record low
- −3°−19° (2020)
- Heating degree days
- 595
- Cooling degree days
- 3
Buffalo in November
Highs average 44°7° and lows 22°−6°, with 0.32 in8.1 mm of precipitation in a typical November.
- Record high
- 83°28° (1999)
- Record low
- −13°−25° (2010)
- Heating degree days
- 963
- Cooling degree days
- 0
Buffalo in December
Highs average 34°1° and lows 13°−10°, with 0.35 in8.9 mm of precipitation in a typical December.
- Record high
- 71°22° (2021)
- Record low
- −28°−33° (2013)
- Heating degree days
- 1283
- Cooling degree days
- 0