Myrtle weather by month
What a typical year looks like in Myrtle, Minnesota: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at ALBERT LEA 3SE, 12 km from Myrtle; records cover 1885–2026.
The year at a glance
- Precipitation a year
- 35.8 in909 mm
- Snow a year
- 40 in100 cm
- Last spring freeze
- Apr 28
- First fall freeze
- Oct 5
- Heating degree days
- 7,828
- Cooling degree days
- 649
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 92°33° (cooling, 1%).
Month by month
Myrtle in January
Highs average 23°−5° and lows 6°−14°, with 0.89 in23 mm of precipitation and 9 in23 cm of snow in a typical January.
- Record high
- 64°18° (1944)
- Record low
- −41° (1887)
- Heating degree days
- 1575
- Cooling degree days
- 0
Myrtle in February
Highs average 27°−3° and lows 10°−12°, with 0.87 in22 mm of precipitation and 10 in25 cm of snow in a typical February.
- Record high
- 71°22° (2024)
- Record low
- −33°−36° (1996)
- Heating degree days
- 1303
- Cooling degree days
- 0
Myrtle in March
Highs average 40°4° and lows 23°−5°, with 1.9 in49 mm of precipitation and 7 in17 cm of snow in a typical March.
- Record high
- 84°29° (1910)
- Record low
- −29°−34° (1962)
- Heating degree days
- 1048
- Cooling degree days
- 0
Myrtle in April
Highs average 55°13° and lows 36°2°, with 3.7 in95 mm of precipitation and 2.8 in7.1 cm of snow in a typical April.
- Record high
- 94°34° (1910)
- Record low
- 3°−16° (1979)
- Heating degree days
- 594
- Cooling degree days
- 2
Myrtle in May
Highs average 68°20° and lows 48°9°, with 4.9 in123 mm of precipitation and 0.3 in0.8 cm of snow in a typical May.
- Record high
- 104°40° (1934)
- Record low
- 21°−6° (1966)
- Heating degree days
- 252
- Cooling degree days
- 37
Myrtle in June
Highs average 78°26° and lows 59°15°, with 5.4 in138 mm of precipitation in a typical June.
- Record high
- 104°40° (1934)
- Record low
- 34°1° (1885)
- Heating degree days
- 42
- Cooling degree days
- 151
Myrtle in July
Highs average 82°28° and lows 63°17°, with 4.8 in122 mm of precipitation in a typical July.
- Record high
- 104°40° (1894)
- Record low
- 42°6° (1895)
- Heating degree days
- 9
- Cooling degree days
- 228
Myrtle in August
Highs average 79°26° and lows 60°16°, with 4.3 in108 mm of precipitation in a typical August.
- Record high
- 101°38° (1922)
- Record low
- 35°2° (1886)
- Heating degree days
- 21
- Cooling degree days
- 162
Myrtle in September
Highs average 73°23° and lows 51°11°, with 3.7 in94 mm of precipitation in a typical September.
- Record high
- 103°39° (1922)
- Record low
- 22°−6° (1942)
- Heating degree days
- 152
- Cooling degree days
- 63
Myrtle in OctoberThis month
Highs average 59°15° and lows 38°3°, with 2.6 in66 mm of precipitation and 0.3 in0.8 cm of snow in a typical October.
- Record high
- 94°34° (1997)
- Record low
- −6°−21° (1887)
- Heating degree days
- 524
- Cooling degree days
- 6
Myrtle in November
Highs average 42°6° and lows 25°−4°, with 1.5 in39 mm of precipitation and 2.7 in6.9 cm of snow in a typical November.
- Record high
- 79°26° (2006)
- Record low
- −18°−28° (1895)
- Heating degree days
- 939
- Cooling degree days
- 0
Myrtle in December
Highs average 28°−2° and lows 13°−10°, with 1.1 in29 mm of precipitation and 8 in21 cm of snow in a typical December.
- Record high
- 67°19° (1998)
- Record low
- −29°−34° (1983)
- Heating degree days
- 1369
- Cooling degree days
- 0