Tonka Bay weather by month
What a typical year looks like in Tonka Bay, Minnesota: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at NEW HOPE, 19 km from Tonka Bay; records cover 1968–2026.
The year at a glance
- Precipitation a year
- 34.7 in881 mm
- Snow a year
- 54 in138 cm
- Last spring freeze
- Apr 28
- First fall freeze
- Oct 7
- Heating degree days
- 7,681
- Cooling degree days
- 671
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 92°33° (cooling, 1%).
Month by month
Tonka Bay in January
Highs average 24°−5° and lows 7°−14°, with 0.95 in24 mm of precipitation and 10 in26 cm of snow in a typical January.
- Record high
- 55°13° (1981)
- Record low
- −30°−34° (2019)
- Heating degree days
- 1540
- Cooling degree days
- 0
Tonka Bay in February
Highs average 29°−2° and lows 11°−12°, with 1 in26 mm of precipitation and 10 in26 cm of snow in a typical February.
- Record high
- 63°17° (2024)
- Record low
- −33°−36° (1996)
- Heating degree days
- 1266
- Cooling degree days
- 0
Tonka Bay in March
Highs average 42°5° and lows 23°−5°, with 1.9 in48 mm of precipitation and 9 in23 cm of snow in a typical March.
- Record high
- 82°28° (1986)
- Record low
- −18°−28° (2014)
- Heating degree days
- 1012
- Cooling degree days
- 0
Tonka Bay in April
Highs average 57°14° and lows 35°2°, with 3.3 in84 mm of precipitation and 5 in13 cm of snow in a typical April.
- Record high
- 94°34° (1980)
- Record low
- 4°−16° (1995)
- Heating degree days
- 574
- Cooling degree days
- 3
Tonka Bay in May
Highs average 69°21° and lows 48°9°, with 4.5 in114 mm of precipitation in a typical May.
- Record high
- 98°37° (2018)
- Record low
- 24°−4° (1989)
- Heating degree days
- 241
- Cooling degree days
- 35
Tonka Bay in June
Highs average 78°26° and lows 58°15°, with 4.6 in118 mm of precipitation in a typical June.
- Record high
- 102°39° (1988)
- Record low
- 36°2° (1969)
- Heating degree days
- 44
- Cooling degree days
- 139
Tonka Bay in July
Highs average 82°28° and lows 63°17°, with 4.5 in115 mm of precipitation in a typical July.
- Record high
- 105°41° (1988)
- Record low
- 42°6° (1969)
- Heating degree days
- 6
- Cooling degree days
- 245
Tonka Bay in August
Highs average 80°27° and lows 61°16°, with 4.2 in106 mm of precipitation in a typical August.
- Record high
- 100°38° (1988)
- Record low
- 39°4° (2004)
- Heating degree days
- 16
- Cooling degree days
- 179
Tonka Bay in September
Highs average 72°22° and lows 52°11°, with 3.5 in88 mm of precipitation in a typical September.
- Record high
- 98°37° (2023)
- Record low
- 25°−4° (1974)
- Heating degree days
- 152
- Cooling degree days
- 65
Tonka Bay in OctoberThis month
Highs average 57°14° and lows 39°4°, with 3 in76 mm of precipitation and 0.8 in2 cm of snow in a typical October.
- Record high
- 90°32° (2023)
- Record low
- 13°−11° (1976)
- Heating degree days
- 526
- Cooling degree days
- 5
Tonka Bay in November
Highs average 41°5° and lows 26°−3°, with 1.9 in47 mm of precipitation and 7 in18 cm of snow in a typical November.
- Record high
- 76°24° (1999)
- Record low
- −11°−24° (1977)
- Heating degree days
- 942
- Cooling degree days
- 0
Tonka Bay in December
Highs average 29°−2° and lows 14°−10°, with 1.4 in36 mm of precipitation and 12 in31 cm of snow in a typical December.
- Record high
- 67°19° (1998)
- Record low
- −28°−33° (1983)
- Heating degree days
- 1362
- Cooling degree days
- 0