Jamesport weather by month
What a typical year looks like in Jamesport, New York: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Westhampton Gabreski Airport, 13 km from Jamesport; records cover 1951–2026.
The year at a glance
- Precipitation a year
- 43.5 in1104 mm
- Snow a year
- Rare
- Last spring freeze
- May 9
- First fall freeze
- Oct 11
- Heating degree days
- 5,924
- Cooling degree days
- 578
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 2°−17° (heating, 99%) and 91°33° (cooling, 1%).
Month by month
Jamesport in January
Highs average 39°4° and lows 20°−7°, with 3.2 in81 mm of precipitation in a typical January.
- Record high
- 67°19° (1967)
- Record low
- −15°−26° (2009)
- Heating degree days
- 1105
- Cooling degree days
- 0
Jamesport in February
Highs average 40°5° and lows 21°−6°, with 2.7 in69 mm of precipitation in a typical February.
- Record high
- 71°22° (2023)
- Record low
- −12°−24° (2015)
- Heating degree days
- 962
- Cooling degree days
- 0
Jamesport in March
Highs average 47°8° and lows 28°−2°, with 4.3 in109 mm of precipitation in a typical March.
- Record high
- 76°24° (2011)
- Record low
- −9°−23° (2015)
- Heating degree days
- 862
- Cooling degree days
- 0
Jamesport in April
Highs average 57°14° and lows 36°2°, with 3.8 in96 mm of precipitation in a typical April.
- Record high
- 88°31° (2002)
- Record low
- 11°−12° (2016)
- Heating degree days
- 568
- Cooling degree days
- 1
Jamesport in May
Highs average 66°19° and lows 46°8°, with 3.3 in84 mm of precipitation in a typical May.
- Record high
- 93°34° (2022)
- Record low
- 24°−4° (2008)
- Heating degree days
- 291
- Cooling degree days
- 9
Jamesport in June
Highs average 75°24° and lows 56°13°, with 3.5 in89 mm of precipitation in a typical June.
- Record high
- 100°38° (2025)
- Record low
- 33°1° (1967)
- Heating degree days
- 66
- Cooling degree days
- 84
Jamesport in July
Highs average 81°27° and lows 63°17°, with 2.9 in73 mm of precipitation in a typical July.
- Record high
- 100°38° (1999)
- Record low
- 42°6° (2001)
- Heating degree days
- 7
- Cooling degree days
- 221
Jamesport in August
Highs average 80°27° and lows 61°16°, with 3.7 in95 mm of precipitation in a typical August.
- Record high
- 99°37° (2006)
- Record low
- 39°4° (1965)
- Heating degree days
- 10
- Cooling degree days
- 191
Jamesport in September
Highs average 74°23° and lows 54°12°, with 3.8 in95 mm of precipitation in a typical September.
- Record high
- 94°34° (2010)
- Record low
- 32°0° (2020)
- Heating degree days
- 103
- Cooling degree days
- 65
Jamesport in OctoberThis month
Highs average 63°17° and lows 43°6°, with 4.7 in118 mm of precipitation in a typical October.
- Record high
- 88°31° (2019)
- Record low
- 16°−9° (1966)
- Heating degree days
- 380
- Cooling degree days
- 7
Jamesport in November
Highs average 53°12° and lows 34°1°, with 3.5 in88 mm of precipitation in a typical November.
- Record high
- 80°27° (2022)
- Record low
- 6°−14° (2018)
- Heating degree days
- 645
- Cooling degree days
- 0
Jamesport in December
Highs average 45°7° and lows 26°−3°, with 4.2 in106 mm of precipitation in a typical December.
- Record high
- 71°22° (1998)
- Record low
- −7°−22° (2009)
- Heating degree days
- 925
- Cooling degree days
- 0