Mount Sterling weather by month
What a typical year looks like in Mount Sterling, Wisconsin: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Lynxville Dam 9, 18 km from Mount Sterling; records cover 1939–2026.
The year at a glance
- Precipitation a year
- 36.5 in927 mm
- Snow a year
- 36 in90 cm
- Last spring freeze
- Apr 16
- First fall freeze
- Oct 19
- Heating degree days
- 7,062
- Cooling degree days
- 698
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −11°−24° (heating, 99%) and 92°33° (cooling, 1%).
Month by month
Mount Sterling in January
Highs average 27°−3° and lows 10°−12°, with 1.3 in33 mm of precipitation and 10 in25 cm of snow in a typical January.
- Record high
- 57°14° (2002)
- Record low
- −43°−42° (1951)
- Heating degree days
- 1454
- Cooling degree days
- 0
Mount Sterling in February
Highs average 31°0° and lows 13°−10°, with 1.2 in30 mm of precipitation and 10 in25 cm of snow in a typical February.
- Record high
- 70°21° (2024)
- Record low
- −34°−37° (1996)
- Heating degree days
- 1197
- Cooling degree days
- 0
Mount Sterling in March
Highs average 44°7° and lows 25°−4°, with 2 in52 mm of precipitation and 5 in12 cm of snow in a typical March.
- Record high
- 82°28° (1986)
- Record low
- −34°−37° (1962)
- Heating degree days
- 941
- Cooling degree days
- 0
Mount Sterling in April
Highs average 58°15° and lows 37°3°, with 3.8 in95 mm of precipitation and 0.6 in1.5 cm of snow in a typical April.
- Record high
- 93°34° (1980)
- Record low
- 11°−12° (1972)
- Heating degree days
- 519
- Cooling degree days
- 3
Mount Sterling in May
Highs average 70°21° and lows 49°9°, with 4.7 in119 mm of precipitation in a typical May.
- Record high
- 94°34° (2022)
- Record low
- 27°−3° (1989)
- Heating degree days
- 211
- Cooling degree days
- 38
Mount Sterling in June
Highs average 79°26° and lows 59°15°, with 5.5 in140 mm of precipitation in a typical June.
- Record high
- 100°38° (1988)
- Record low
- 36°2° (1995)
- Heating degree days
- 33
- Cooling degree days
- 150
Mount Sterling in July
Highs average 83°28° and lows 63°17°, with 4.5 in114 mm of precipitation in a typical July.
- Record high
- 101°38° (1980)
- Record low
- 46°8° (1971)
- Heating degree days
- 4
- Cooling degree days
- 246
Mount Sterling in August
Highs average 80°27° and lows 61°16°, with 3.8 in97 mm of precipitation in a typical August.
- Record high
- 101°38° (1988)
- Record low
- 44°7° (1950)
- Heating degree days
- 11
- Cooling degree days
- 187
Mount Sterling in September
Highs average 73°23° and lows 53°12°, with 3.8 in96 mm of precipitation in a typical September.
- Record high
- 100°38° (1939)
- Record low
- 29°−2° (1984)
- Heating degree days
- 119
- Cooling degree days
- 68
Mount Sterling in OctoberThis month
Highs average 60°16° and lows 41°5°, with 2.5 in64 mm of precipitation and 0.1 in0.3 cm of snow in a typical October.
- Record high
- 92°33° (1997)
- Record low
- 18°−8° (1952)
- Heating degree days
- 456
- Cooling degree days
- 6
Mount Sterling in November
Highs average 44°7° and lows 29°−2°, with 2 in51 mm of precipitation and 1.7 in4.3 cm of snow in a typical November.
- Record high
- 75°24° (1944)
- Record low
- −8°−22° (1977)
- Heating degree days
- 855
- Cooling degree days
- 0
Mount Sterling in December
Highs average 32°0° and lows 17°−8°, with 1.5 in37 mm of precipitation and 9 in22 cm of snow in a typical December.
- Record high
- 66°19° (2001)
- Record low
- −29°−34° (2000)
- Heating degree days
- 1262
- Cooling degree days
- 0