Frontenac weather by month
What a typical year looks like in Frontenac, Minnesota: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at RED WING DAM 3, 24 km from Frontenac; records cover 1949–2026.
The year at a glance
- Precipitation a year
- 32.4 in823 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 21
- First fall freeze
- Oct 12
- Heating degree days
- 7,735
- Cooling degree days
- 665
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 93°34° (cooling, 1%).
Month by month
Frontenac in January
Highs average 23°−5° and lows 6°−15°, with 0.78 in20 mm of precipitation in a typical January.
- Record high
- 55°13° (2012)
- Record low
- −36°−38° (1970)
- Heating degree days
- 1565
- Cooling degree days
- 0
Frontenac in February
Highs average 28°−2° and lows 9°−13°, with 0.88 in22 mm of precipitation in a typical February.
- Record high
- 66°19° (2024)
- Record low
- −36°−38° (1996)
- Heating degree days
- 1299
- Cooling degree days
- 0
Frontenac in March
Highs average 41°5° and lows 22°−5°, with 1.7 in42 mm of precipitation in a typical March.
- Record high
- 81°27° (2012)
- Record low
- −23°−31° (2014)
- Heating degree days
- 1042
- Cooling degree days
- 0
Frontenac in April
Highs average 56°13° and lows 36°2°, with 2.9 in73 mm of precipitation in a typical April.
- Record high
- 89°32° (2002)
- Record low
- 7°−14° (1995)
- Heating degree days
- 583
- Cooling degree days
- 2
Frontenac in May
Highs average 68°20° and lows 48°9°, with 4.1 in103 mm of precipitation in a typical May.
- Record high
- 99°37° (2018)
- Record low
- 26°−3° (2005)
- Heating degree days
- 246
- Cooling degree days
- 34
Frontenac in June
Highs average 78°26° and lows 58°15°, with 5.1 in129 mm of precipitation in a typical June.
- Record high
- 101°38° (2011)
- Record low
- 39°4° (1992)
- Heating degree days
- 46
- Cooling degree days
- 142
Frontenac in July
Highs average 82°28° and lows 62°17°, with 3.8 in97 mm of precipitation in a typical July.
- Record high
- 103°39° (1995)
- Record low
- 46°8° (1972)
- Heating degree days
- 8
- Cooling degree days
- 237
Frontenac in August
Highs average 80°27° and lows 60°16°, with 4.5 in113 mm of precipitation in a typical August.
- Record high
- 100°38° (2006)
- Record low
- 41°5° (2004)
- Heating degree days
- 17
- Cooling degree days
- 177
Frontenac in September
Highs average 73°23° and lows 52°11°, with 3.7 in93 mm of precipitation in a typical September.
- Record high
- 97°36° (2023)
- Record low
- 31°−1° (1991)
- Heating degree days
- 148
- Cooling degree days
- 66
Frontenac in OctoberThis month
Highs average 59°15° and lows 39°4°, with 2.5 in63 mm of precipitation in a typical October.
- Record high
- 92°33° (1997)
- Record low
- 14°−10° (2020)
- Heating degree days
- 509
- Cooling degree days
- 7
Frontenac in November
Highs average 42°6° and lows 26°−3°, with 1.6 in41 mm of precipitation in a typical November.
- Record high
- 78°26° (1999)
- Record low
- −10°−23° (1991)
- Heating degree days
- 924
- Cooling degree days
- 0
Frontenac in December
Highs average 29°−2° and lows 14°−10°, with 1 in26 mm of precipitation in a typical December.
- Record high
- 66°19° (1998)
- Record low
- −25°−32° (2000)
- Heating degree days
- 1348
- Cooling degree days
- 0