Deerfield Colony weather by month
What a typical year looks like in Deerfield Colony, South Dakota: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Aberdeen 35 Wnw, 23 km from Deerfield Colony; records cover 2007–2026.
The year at a glance
- Precipitation a year
- 19.9 in505 mm
- Snow a year
- Rare
- Last spring freeze
- May 11
- First fall freeze
- Oct 3
- Heating degree days
- 8,767
- Cooling degree days
- 395
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −17°−27° (heating, 99%) and 93°34° (cooling, 1%).
Month by month
Deerfield Colony in January
Highs average 21°−6° and lows 4°−16°, with 0.5 in13 mm of precipitation in a typical January.
- Record high
- 56°13° (2012)
- Record low
- −32°−36° (2019)
- Heating degree days
- 1638
- Cooling degree days
- 0
Deerfield Colony in February
Highs average 24°−4° and lows 7°−14°, with 0.52 in13 mm of precipitation in a typical February.
- Record high
- 67°19° (2016)
- Record low
- −30°−34° (2021)
- Heating degree days
- 1389
- Cooling degree days
- 0
Deerfield Colony in March
Highs average 38°3° and lows 18°−8°, with 1.4 in36 mm of precipitation in a typical March.
- Record high
- 82°28° (2012)
- Record low
- −21°−29° (2019)
- Heating degree days
- 1153
- Cooling degree days
- 0
Deerfield Colony in April
Highs average 53°12° and lows 31°−1°, with 1.7 in42 mm of precipitation in a typical April.
- Record high
- 91°33° (2026)
- Record low
- 0°−18° (2018)
- Heating degree days
- 687
- Cooling degree days
- 0
Deerfield Colony in May
Highs average 66°19° and lows 43°6°, with 2.9 in74 mm of precipitation in a typical May.
- Record high
- 93°34° (2018)
- Record low
- 19°−7° (2013)
- Heating degree days
- 339
- Cooling degree days
- 12
Deerfield Colony in June
Highs average 75°24° and lows 53°12°, with 3.3 in84 mm of precipitation in a typical June.
- Record high
- 99°37° (2021)
- Record low
- 35°2° (2013)
- Heating degree days
- 92
- Cooling degree days
- 61
Deerfield Colony in July
Highs average 81°27° and lows 58°15°, with 3 in75 mm of precipitation in a typical July.
- Record high
- 102°39° (2007)
- Record low
- 42°6° (2013)
- Heating degree days
- 18
- Cooling degree days
- 159
Deerfield Colony in August
Highs average 79°26° and lows 56°13°, with 2.1 in52 mm of precipitation in a typical August.
- Record high
- 100°38° (2013)
- Record low
- 40°4° (2015)
- Heating degree days
- 38
- Cooling degree days
- 126
Deerfield Colony in September
Highs average 71°22° and lows 47°8°, with 2 in51 mm of precipitation in a typical September.
- Record high
- 96°36° (2007)
- Record low
- 24°−4° (2012)
- Heating degree days
- 213
- Cooling degree days
- 35
Deerfield Colony in OctoberThis month
Highs average 55°13° and lows 33°1°, with 1.6 in40 mm of precipitation in a typical October.
- Record high
- 92°33° (2015)
- Record low
- 2°−17° (2020)
- Heating degree days
- 650
- Cooling degree days
- 2
Deerfield Colony in November
Highs average 39°4° and lows 20°−7°, with 0.45 in11 mm of precipitation in a typical November.
- Record high
- 73°23° (2016)
- Record low
- −15°−26° (2010)
- Heating degree days
- 1070
- Cooling degree days
- 0
Deerfield Colony in December
Highs average 25°−4° and lows 9°−13°, with 0.55 in14 mm of precipitation in a typical December.
- Record high
- 63°17° (2021)
- Record low
- −28°−33° (2017)
- Heating degree days
- 1480
- Cooling degree days
- 0