St. Leo weather by month
What a typical year looks like in St. Leo, Minnesota: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Canby, 17 km from St. Leo; records cover 1916–2026.
The year at a glance
- Precipitation a year
- 28 in710 mm
- Snow a year
- 48 in121 cm
- Last spring freeze
- May 2
- First fall freeze
- Oct 2
- Heating degree days
- 7,994
- Cooling degree days
- 643
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 94°34° (cooling, 1%).
Month by month
St. Leo in January
Highs average 23°−5° and lows 5°−15°, with 0.84 in21 mm of precipitation and 8 in20 cm of snow in a typical January.
- Record high
- 68°20° (1981)
- Record low
- −33°−36° (1936)
- Heating degree days
- 1568
- Cooling degree days
- 0
St. Leo in February
Highs average 28°−2° and lows 9°−13°, with 0.9 in23 mm of precipitation and 8 in20 cm of snow in a typical February.
- Record high
- 67°19° (1981)
- Record low
- −32°−36° (1936)
- Heating degree days
- 1299
- Cooling degree days
- 0
St. Leo in March
Highs average 40°4° and lows 21°−6°, with 1.5 in39 mm of precipitation and 7 in19 cm of snow in a typical March.
- Record high
- 84°29° (1921)
- Record low
- −28°−33° (1962)
- Heating degree days
- 1076
- Cooling degree days
- 0
St. Leo in April
Highs average 55°13° and lows 33°1°, with 2.8 in71 mm of precipitation and 7 in18 cm of snow in a typical April.
- Record high
- 98°37° (1980)
- Record low
- 0°−18° (1936)
- Heating degree days
- 633
- Cooling degree days
- 2
St. Leo in May
Highs average 68°20° and lows 46°8°, with 3.4 in87 mm of precipitation and 0.1 in0.3 cm of snow in a typical May.
- Record high
- 100°38° (2018)
- Record low
- 18°−8° (1967)
- Heating degree days
- 278
- Cooling degree days
- 34
St. Leo in June
Highs average 78°26° and lows 57°14°, with 4.1 in104 mm of precipitation in a typical June.
- Record high
- 110°43° (1931)
- Record low
- 33°1° (1946)
- Heating degree days
- 53
- Cooling degree days
- 134
St. Leo in July
Highs average 83°28° and lows 62°16°, with 3.3 in85 mm of precipitation in a typical July.
- Record high
- 111°44° (1936)
- Record low
- 38°3° (1967)
- Heating degree days
- 10
- Cooling degree days
- 235
St. Leo in August
Highs average 81°27° and lows 59°15°, with 3.4 in85 mm of precipitation in a typical August.
- Record high
- 108°42° (1988)
- Record low
- 35°2° (1950)
- Heating degree days
- 24
- Cooling degree days
- 172
St. Leo in September
Highs average 73°23° and lows 50°10°, with 2.8 in71 mm of precipitation in a typical September.
- Record high
- 106°41° (1931)
- Record low
- 22°−6° (1942)
- Heating degree days
- 163
- Cooling degree days
- 61
St. Leo in OctoberThis month
Highs average 59°15° and lows 37°3°, with 2.4 in61 mm of precipitation and 1 in2.5 cm of snow in a typical October.
- Record high
- 94°34° (1938)
- Record low
- 9°−13° (1917)
- Heating degree days
- 540
- Cooling degree days
- 5
St. Leo in November
Highs average 42°6° and lows 24°−5°, with 1.4 in34 mm of precipitation and 6 in16 cm of snow in a typical November.
- Record high
- 82°28° (1999)
- Record low
- −16°−27° (1964)
- Heating degree days
- 963
- Cooling degree days
- 0
St. Leo in December
Highs average 29°−2° and lows 12°−11°, with 1.1 in28 mm of precipitation and 10 in25 cm of snow in a typical December.
- Record high
- 72°22° (1941)
- Record low
- −28°−33° (1917)
- Heating degree days
- 1387
- Cooling degree days
- 0