Mountain Lakes weather by month
What a typical year looks like in Mountain Lakes, New Hampshire: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Lincoln Nepp, 25 km from Mountain Lakes; records cover 2004–2026.
The year at a glance
- Precipitation a year
- 52.5 in1334 mm
- Snow a year
- Rare
- Last spring freeze
- May 12
- First fall freeze
- Oct 5
- Heating degree days
- 7,920
- Cooling degree days
- 303
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 91°33° (cooling, 1%).
Month by month
Mountain Lakes in January
Highs average 28°−2° and lows 8°−13°, with 3.4 in86 mm of precipitation in a typical January.
- Record high
- 55°13° (2020)
- Record low
- −16°−27° (2022)
- Heating degree days
- 1455
- Cooling degree days
- 0
Mountain Lakes in February
Highs average 31°−1° and lows 9°−13°, with 3.1 in77 mm of precipitation in a typical February.
- Record high
- 67°19° (2017)
- Record low
- −19°−28° (2023)
- Heating degree days
- 1265
- Cooling degree days
- 0
Mountain Lakes in March
Highs average 40°4° and lows 19°−7°, with 3.3 in85 mm of precipitation in a typical March.
- Record high
- 70°21° (2026)
- Record low
- −8°−22° (2015)
- Heating degree days
- 1113
- Cooling degree days
- 0
Mountain Lakes in April
Highs average 54°12° and lows 30°−1°, with 5.2 in132 mm of precipitation in a typical April.
- Record high
- 85°29° (2017)
- Record low
- 9°−13° (2016)
- Heating degree days
- 696
- Cooling degree days
- 0
Mountain Lakes in May
Highs average 66°19° and lows 42°6°, with 4.2 in107 mm of precipitation in a typical May.
- Record high
- 93°34° (2020)
- Record low
- 24°−4° (2023)
- Heating degree days
- 346
- Cooling degree days
- 8
Mountain Lakes in June
Highs average 75°24° and lows 52°11°, with 4.8 in121 mm of precipitation in a typical June.
- Record high
- 98°37° (2024)
- Record low
- 34°1° (2020)
- Heating degree days
- 106
- Cooling degree days
- 52
Mountain Lakes in July
Highs average 80°27° and lows 57°14°, with 6 in153 mm of precipitation in a typical July.
- Record high
- 94°34° (2018)
- Record low
- 44°7° (2015)
- Heating degree days
- 19
- Cooling degree days
- 124
Mountain Lakes in August
Highs average 78°26° and lows 54°12°, with 3.9 in99 mm of precipitation in a typical August.
- Record high
- 95°35° (2025)
- Record low
- 40°4° (2025)
- Heating degree days
- 42
- Cooling degree days
- 85
Mountain Lakes in September
Highs average 72°22° and lows 47°8°, with 3.8 in97 mm of precipitation in a typical September.
- Record high
- 91°33° (2015)
- Record low
- 28°−2° (2020)
- Heating degree days
- 205
- Cooling degree days
- 32
Mountain Lakes in OctoberThis month
Highs average 58°14° and lows 36°2°, with 5.4 in138 mm of precipitation in a typical October.
- Record high
- 85°29° (2025)
- Record low
- 20°−7° (2020)
- Heating degree days
- 569
- Cooling degree days
- 2
Mountain Lakes in November
Highs average 45°7° and lows 27°−3°, with 4.7 in120 mm of precipitation in a typical November.
- Record high
- 77°25° (2020)
- Record low
- 1°−17° (2018)
- Heating degree days
- 881
- Cooling degree days
- 0
Mountain Lakes in December
Highs average 35°2° and lows 16°−9°, with 4.7 in118 mm of precipitation in a typical December.
- Record high
- 64°18° (2015)
- Record low
- −12°−24° (2017)
- Heating degree days
- 1223
- Cooling degree days
- 0