Lewisville weather by month
What a typical year looks like in Lewisville, Minnesota: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at St. James Wwtp, 16 km from Lewisville; records cover 1958–2026.
The year at a glance
- Precipitation a year
- 33.1 in841 mm
- Snow a year
- 50 in128 cm
- Last spring freeze
- Apr 28
- First fall freeze
- Oct 4
- Heating degree days
- 7,786
- Cooling degree days
- 686
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −14°−26° (heating, 99%) and 93°34° (cooling, 1%).
Month by month
Lewisville in January
Highs average 24°−5° and lows 5°−15°, with 1.1 in28 mm of precipitation and 11 in27 cm of snow in a typical January.
- Record high
- 64°18° (1981)
- Record low
- −30°−34° (1970)
- Heating degree days
- 1570
- Cooling degree days
- 0
Lewisville in February
Highs average 28°−2° and lows 10°−12°, with 0.8 in20 mm of precipitation and 11 in28 cm of snow in a typical February.
- Record high
- 67°19° (2017)
- Record low
- −30°−34° (1996)
- Heating degree days
- 1286
- Cooling degree days
- 0
Lewisville in March
Highs average 40°5° and lows 22°−5°, with 1.8 in46 mm of precipitation and 8 in21 cm of snow in a typical March.
- Record high
- 85°29° (2025)
- Record low
- −26°−32° (1962)
- Heating degree days
- 1045
- Cooling degree days
- 1
Lewisville in April
Highs average 56°13° and lows 35°1°, with 3.1 in80 mm of precipitation and 4 in9 cm of snow in a typical April.
- Record high
- 93°34° (1980)
- Record low
- 6°−14° (1995)
- Heating degree days
- 590
- Cooling degree days
- 2
Lewisville in May
Highs average 69°21° and lows 48°9°, with 4.7 in118 mm of precipitation and 0.1 in0.3 cm of snow in a typical May.
- Record high
- 102°39° (2013)
- Record low
- 19°−7° (1961)
- Heating degree days
- 247
- Cooling degree days
- 44
Lewisville in June
Highs average 80°26° and lows 58°15°, with 4.9 in124 mm of precipitation in a typical June.
- Record high
- 104°40° (1988)
- Record low
- 36°2° (1995)
- Heating degree days
- 40
- Cooling degree days
- 157
Lewisville in July
Highs average 83°28° and lows 62°17°, with 4.1 in105 mm of precipitation in a typical July.
- Record high
- 105°41° (1988)
- Record low
- 40°4° (1995)
- Heating degree days
- 10
- Cooling degree days
- 238
Lewisville in August
Highs average 80°27° and lows 59°15°, with 4 in100 mm of precipitation in a typical August.
- Record high
- 101°38° (1988)
- Record low
- 36°2° (2004)
- Heating degree days
- 22
- Cooling degree days
- 169
Lewisville in September
Highs average 74°23° and lows 51°10°, with 3.4 in87 mm of precipitation in a typical September.
- Record high
- 98°37° (1976)
- Record low
- 25°−4° (1974)
- Heating degree days
- 146
- Cooling degree days
- 68
Lewisville in OctoberThis month
Highs average 60°16° and lows 37°3°, with 2.5 in64 mm of precipitation and 0.6 in1.5 cm of snow in a typical October.
- Record high
- 92°33° (1963)
- Record low
- 10°−12° (2020)
- Heating degree days
- 517
- Cooling degree days
- 7
Lewisville in November
Highs average 43°6° and lows 25°−4°, with 1.6 in40 mm of precipitation and 5 in12 cm of snow in a typical November.
- Record high
- 82°28° (2006)
- Record low
- −13°−25° (1977)
- Heating degree days
- 934
- Cooling degree days
- 0
Lewisville in December
Highs average 29°−2° and lows 12°−11°, with 1.1 in29 mm of precipitation and 11 in28 cm of snow in a typical December.
- Record high
- 68°20° (1998)
- Record low
- −27°−33° (1983)
- Heating degree days
- 1379
- Cooling degree days
- 0