Lemmon weather by month
What a typical year looks like in Lemmon, South Dakota: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Lemmon, 0 km from Lemmon; records cover 1909–2026.
The year at a glance
- Precipitation a year
- 18 in457 mm
- Snow a year
- 42 in107 cm
- Last spring freeze
- May 12
- First fall freeze
- Sep 28
- Heating degree days
- 7,640
- Cooling degree days
- 651
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −15°−26° (heating, 99%) and 98°37° (cooling, 1%).
Month by month
Lemmon in January
Highs average 29°−2° and lows 9°−13°, with 0.26 in6.6 mm of precipitation and 5 in11 cm of snow in a typical January.
- Record high
- 69°21° (1981)
- Record low
- −42°−41° (1943)
- Heating degree days
- 1431
- Cooling degree days
- 0
Lemmon in February
Highs average 33°0° and lows 12°−11°, with 0.48 in12 mm of precipitation and 8 in19 cm of snow in a typical February.
- Record high
- 70°21° (1992)
- Record low
- −45°−43° (1936)
- Heating degree days
- 1196
- Cooling degree days
- 0
Lemmon in March
Highs average 45°7° and lows 21°−6°, with 0.79 in20 mm of precipitation and 8 in19 cm of snow in a typical March.
- Record high
- 85°29° (1910)
- Record low
- −27°−33° (1962)
- Heating degree days
- 989
- Cooling degree days
- 0
Lemmon in April
Highs average 58°14° and lows 32°0°, with 1.7 in43 mm of precipitation and 5 in12 cm of snow in a typical April.
- Record high
- 93°34° (1980)
- Record low
- −6°−21° (1936)
- Heating degree days
- 610
- Cooling degree days
- 1
Lemmon in May
Highs average 69°21° and lows 43°6°, with 2.8 in72 mm of precipitation and 0.7 in1.8 cm of snow in a typical May.
- Record high
- 103°39° (1934)
- Record low
- 10°−12° (1967)
- Heating degree days
- 297
- Cooling degree days
- 18
Lemmon in June
Highs average 79°26° and lows 53°12°, with 3 in77 mm of precipitation in a typical June.
- Record high
- 109°43° (2002)
- Record low
- 29°−2° (1919)
- Heating degree days
- 72
- Cooling degree days
- 94
Lemmon in July
Highs average 87°30° and lows 59°15°, with 2.8 in70 mm of precipitation in a typical July.
- Record high
- 115°46° (1936)
- Record low
- 37°3° (1934)
- Heating degree days
- 13
- Cooling degree days
- 250
Lemmon in August
Highs average 86°30° and lows 57°14°, with 2.1 in54 mm of precipitation in a typical August.
- Record high
- 107°42° (1937)
- Record low
- 31°−1° (1935)
- Heating degree days
- 22
- Cooling degree days
- 217
Lemmon in September
Highs average 77°25° and lows 47°8°, with 1.5 in38 mm of precipitation in a typical September.
- Record high
- 105°41° (1929)
- Record low
- 14°−10° (1926)
- Heating degree days
- 155
- Cooling degree days
- 66
Lemmon in OctoberThis month
Highs average 60°15° and lows 35°1°, with 1.5 in39 mm of precipitation and 3 in8 cm of snow in a typical October.
- Record high
- 95°35° (1953)
- Record low
- −10°−23° (1919)
- Heating degree days
- 556
- Cooling degree days
- 5
Lemmon in November
Highs average 44°6° and lows 22°−6°, with 0.6 in15 mm of precipitation and 5 in13 cm of snow in a typical November.
- Record high
- 82°28° (1999)
- Record low
- −24°−31° (1940)
- Heating degree days
- 969
- Cooling degree days
- 0
Lemmon in December
Highs average 32°0° and lows 12°−11°, with 0.41 in10 mm of precipitation and 9 in23 cm of snow in a typical December.
- Record high
- 70°21° (1913)
- Record low
- −33°−36° (1989)
- Heating degree days
- 1330
- Cooling degree days
- 0