Lewiston weather by month
What a typical year looks like in Lewiston, New York: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at NIAGARA FALLS INTL AP, 11 km from Lewiston; records cover 1951–2026.
The year at a glance
- Precipitation a year
- 33 in837 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 30
- First fall freeze
- Oct 18
- Heating degree days
- 6,791
- Cooling degree days
- 530
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −1°−18° (heating, 99%) and 91°33° (cooling, 1%).
Month by month
Lewiston in January
Highs average 32°0° and lows 17°−8°, with 2.3 in58 mm of precipitation in a typical January.
- Record high
- 65°18° (2005)
- Record low
- −16°−27° (1957)
- Heating degree days
- 1266
- Cooling degree days
- 0
Lewiston in February
Highs average 33°0° and lows 17°−8°, with 1.8 in45 mm of precipitation in a typical February.
- Record high
- 68°20° (2018)
- Record low
- −13°−25° (2015)
- Heating degree days
- 1120
- Cooling degree days
- 0
Lewiston in March
Highs average 41°5° and lows 25°−4°, with 2.1 in54 mm of precipitation in a typical March.
- Record high
- 81°27° (2012)
- Record low
- −8°−22° (1960)
- Heating degree days
- 990
- Cooling degree days
- 0
Lewiston in April
Highs average 55°13° and lows 34°1°, with 3.2 in81 mm of precipitation in a typical April.
- Record high
- 86°30° (2017)
- Record low
- 12°−11° (1954)
- Heating degree days
- 619
- Cooling degree days
- 1
Lewiston in May
Highs average 68°20° and lows 46°8°, with 3 in77 mm of precipitation in a typical May.
- Record high
- 93°34° (2018)
- Record low
- 24°−4° (2020)
- Heating degree days
- 281
- Cooling degree days
- 22
Lewiston in June
Highs average 76°25° and lows 56°13°, with 2.9 in73 mm of precipitation in a typical June.
- Record high
- 95°35° (2005)
- Record low
- 37°3° (1958)
- Heating degree days
- 61
- Cooling degree days
- 99
Lewiston in July
Highs average 81°27° and lows 61°16°, with 3.4 in86 mm of precipitation in a typical July.
- Record high
- 97°36° (2005)
- Record low
- 46°8° (1953)
- Heating degree days
- 10
- Cooling degree days
- 195
Lewiston in August
Highs average 79°26° and lows 60°15°, with 2.6 in67 mm of precipitation in a typical August.
- Record high
- 95°35° (2012)
- Record low
- 45°7° (1951)
- Heating degree days
- 19
- Cooling degree days
- 154
Lewiston in September
Highs average 73°23° and lows 52°11°, with 3.3 in83 mm of precipitation in a typical September.
- Record high
- 96°36° (1953)
- Record low
- 30°−1° (1957)
- Heating degree days
- 133
- Cooling degree days
- 54
Lewiston in OctoberThis month
Highs average 60°15° and lows 42°5°, with 3.2 in82 mm of precipitation in a typical October.
- Record high
- 85°29° (2007)
- Record low
- 23°−5° (1952)
- Heating degree days
- 453
- Cooling degree days
- 5
Lewiston in November
Highs average 47°9° and lows 32°0°, with 2.8 in71 mm of precipitation in a typical November.
- Record high
- 80°27° (2022)
- Record low
- −2°−19° (1951)
- Heating degree days
- 760
- Cooling degree days
- 0
Lewiston in December
Highs average 37°3° and lows 24°−5°, with 2.4 in62 mm of precipitation in a typical December.
- Record high
- 72°22° (2015)
- Record low
- −4°−20° (1955)
- Heating degree days
- 1079
- Cooling degree days
- 0