Hartland weather by month
What a typical year looks like in Hartland, Michigan: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at White Lake 4e, 23 km from Hartland; records cover 2000–2026.
The year at a glance
- Precipitation a year
- 35.3 in896 mm
- Snow a year
- 62 in158 cm
- Last spring freeze
- May 13
- First fall freeze
- Oct 7
- Heating degree days
- 7,401
- Cooling degree days
- 359
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −6°−21° (heating, 99%) and 90°32° (cooling, 1%).
Month by month
Hartland in January
Highs average 29°−2° and lows 13°−10°, with 2.6 in66 mm of precipitation and 15 in37 cm of snow in a typical January.
- Record high
- 61°16° (2008)
- Record low
- −21°−29° (2026)
- Heating degree days
- 1361
- Cooling degree days
- 0
Hartland in February
Highs average 32°0° and lows 14°−10°, with 1.8 in46 mm of precipitation and 17 in42 cm of snow in a typical February.
- Record high
- 74°23° (2024)
- Record low
- −25°−32° (2015)
- Heating degree days
- 1184
- Cooling degree days
- 0
Hartland in March
Highs average 42°5° and lows 23°−5°, with 2.3 in57 mm of precipitation and 8 in20 cm of snow in a typical March.
- Record high
- 84°29° (2012)
- Record low
- −14°−26° (2003)
- Heating degree days
- 1005
- Cooling degree days
- 0
Hartland in April
Highs average 55°13° and lows 33°1°, with 3.3 in83 mm of precipitation and 4 in9 cm of snow in a typical April.
- Record high
- 86°30° (2002)
- Record low
- 11°−12° (2016)
- Heating degree days
- 624
- Cooling degree days
- 2
Hartland in May
Highs average 67°19° and lows 44°7°, with 3.9 in98 mm of precipitation in a typical May.
- Record high
- 91°33° (2006)
- Record low
- 24°−4° (2020)
- Heating degree days
- 311
- Cooling degree days
- 18
Hartland in June
Highs average 76°24° and lows 53°12°, with 3.5 in88 mm of precipitation in a typical June.
- Record high
- 96°36° (2012)
- Record low
- 34°1° (2003)
- Heating degree days
- 90
- Cooling degree days
- 75
Hartland in July
Highs average 80°26° and lows 57°14°, with 3.6 in90 mm of precipitation in a typical July.
- Record high
- 97°36° (2012)
- Record low
- 39°4° (2001)
- Heating degree days
- 32
- Cooling degree days
- 127
Hartland in August
Highs average 78°26° and lows 55°13°, with 3.1 in78 mm of precipitation in a typical August.
- Record high
- 97°36° (2001)
- Record low
- 39°4° (2025)
- Heating degree days
- 47
- Cooling degree days
- 98
Hartland in September
Highs average 71°22° and lows 49°9°, with 3.5 in88 mm of precipitation in a typical September.
- Record high
- 94°34° (2002)
- Record low
- 27°−3° (2020)
- Heating degree days
- 188
- Cooling degree days
- 35
Hartland in OctoberThis month
Highs average 58°15° and lows 39°4°, with 3 in77 mm of precipitation and 0.1 in0.3 cm of snow in a typical October.
- Record high
- 89°32° (2025)
- Record low
- 21°−6° (2018)
- Heating degree days
- 516
- Cooling degree days
- 4
Hartland in November
Highs average 45°7° and lows 29°−2°, with 2.6 in67 mm of precipitation and 5 in13 cm of snow in a typical November.
- Record high
- 76°24° (2015)
- Record low
- 0°−18° (2019)
- Heating degree days
- 848
- Cooling degree days
- 0
Hartland in December
Highs average 33°1° and lows 20°−7°, with 2.3 in58 mm of precipitation and 15 in37 cm of snow in a typical December.
- Record high
- 67°19° (2001)
- Record low
- −17°−27° (2017)
- Heating degree days
- 1195
- Cooling degree days
- 0