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Denmark weather by month

What a typical year looks like in Denmark, Wisconsin: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Denmark Wwtp, 2 km from Denmark; records cover 2007–2026.

Today’s Denmark forecast

The year at a glance

January: typical high 24.9°F, low 10.1°F, precipitation 1.33 in. February: typical high 28.3°F, low 12.1°F, precipitation 0.99 in. March: typical high 39.3°F, low 21.7°F, precipitation 1.54 in. April: typical high 52.3°F, low 32.9°F, precipitation 2.97 in. May: typical high 65.8°F, low 44.3°F, precipitation 3.21 in. June: typical high 75.4°F, low 54°F, precipitation 3.89 in. July: typical high 80°F, low 58.9°F, precipitation 3.24 in. August: typical high 78.3°F, low 57.7°F, precipitation 3.49 in. September: typical high 71°F, low 50.5°F, precipitation 3.04 in. October: typical high 57.2°F, low 39.2°F, precipitation 2.68 in. November: typical high 42.7°F, low 27.9°F, precipitation 2.06 in. December: typical high 30.6°F, low 17°F, precipitation 1.63 in.−30°−34°−10°−23°10°−12°30°−1°50°10°70°21°90°32°110°43°25°−4°10°−12°Jan28°−2°12°−11°Feb39°4°22°−6°Mar52°11°33°0°Apr66°19°44°7°May75°24°54°12°Jun80°27°59°15°Jul78°26°58°14°Aug71°22°51°10°Sep57°14°39°4°Oct43°6°28°−2°Nov31°−1°17°−8°DecPrecipitation
Bars: typical low to high (official normals, 1991–2020) Record high Record low
Precipitation a year
30.1 in764 mm
Snow a year
53 in133 cm
Last spring freeze
May 12
First fall freeze
Oct 13
Heating degree days
7,789
Cooling degree days
417

Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −10°−23° (heating, 99%) and 89°32° (cooling, 1%).

Month by month

Denmark in January

Highs average 25°−4° and lows 10°−12°, with 1.3 in34 mm of precipitation and 12 in31 cm of snow in a typical January.

Record high
51°11° (2012)
Record low
−24°−31° (2019)
Heating degree days
1472
Cooling degree days
0

Denmark in February

Highs average 28°−2° and lows 12°−11°, with 0.99 in25 mm of precipitation and 12 in31 cm of snow in a typical February.

Record high
70°21° (2024)
Record low
−23°−31° (2019)
Heating degree days
1254
Cooling degree days
0

Denmark in March

Highs average 39°4° and lows 22°−6°, with 1.5 in39 mm of precipitation and 7 in17 cm of snow in a typical March.

Record high
84°29° (2012)
Record low
−14°−26° (2014)
Heating degree days
1070
Cooling degree days
0

Denmark in April

Highs average 52°11° and lows 33°0°, with 3 in75 mm of precipitation and 4 in11 cm of snow in a typical April.

Record high
85°29° (2023)
Record low
9°−13° (2018)
Heating degree days
672
Cooling degree days
0

Denmark in May

Highs average 66°19° and lows 44°7°, with 3.2 in82 mm of precipitation in a typical May.

Record high
92°33° (2018)
Record low
26°−3° (2020)
Heating degree days
323
Cooling degree days
15

Denmark in June

Highs average 75°24° and lows 54°12°, with 3.9 in99 mm of precipitation in a typical June.

Record high
94°34° (2025)
Record low
36°2° (2009)
Heating degree days
82
Cooling degree days
73

Denmark in July

Highs average 80°27° and lows 59°15°, with 3.2 in82 mm of precipitation in a typical July.

Record high
97°36° (2012)
Record low
44°7° (2015)
Heating degree days
21
Cooling degree days
158

Denmark in August

Highs average 78°26° and lows 58°14°, with 3.5 in89 mm of precipitation in a typical August.

Record high
92°33° (2007)
Record low
40°4° (2009)
Heating degree days
32
Cooling degree days
125

Denmark in September

Highs average 71°22° and lows 51°10°, with 3 in77 mm of precipitation in a typical September.

Record high
92°33° (2013)
Record low
33°1° (2022)
Heating degree days
172
Cooling degree days
44

Denmark in OctoberThis month

Highs average 57°14° and lows 39°4°, with 2.7 in68 mm of precipitation and 0.5 in1.3 cm of snow in a typical October.

Record high
87°31° (2025)
Record low
24°−4° (2020)
Heating degree days
523
Cooling degree days
2

Denmark in November

Highs average 43°6° and lows 28°−2°, with 2.1 in52 mm of precipitation and 1.5 in3.8 cm of snow in a typical November.

Record high
75°24° (2020)
Record low
5°−15° (2014)
Heating degree days
891
Cooling degree days
0

Denmark in December

Highs average 31°−1° and lows 17°−8°, with 1.6 in41 mm of precipitation and 15 in39 cm of snow in a typical December.

Record high
62°17° (2012)
Record low
−13°−25° (2017)
Heating degree days
1277
Cooling degree days
0