Watch Hill weather by month
What a typical year looks like in Watch Hill, Rhode Island: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Westerly State Airport, 5 km from Watch Hill; records cover 1999–2026.
The year at a glance
- Precipitation a year
- 42.8 in1087 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 22
- First fall freeze
- Oct 21
- Heating degree days
- 5,247
- Cooling degree days
- 727
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 5°−15° (heating, 99%) and 89°32° (cooling, 1%).
Month by month
Watch Hill in January
Highs average 40°4° and lows 25°−4°, with 3.3 in85 mm of precipitation in a typical January.
- Record high
- 64°18° (2020)
- Record low
- −8°−22° (2009)
- Heating degree days
- 1023
- Cooling degree days
- 0
Watch Hill in February
Highs average 41°5° and lows 26°−4°, with 2.8 in70 mm of precipitation in a typical February.
- Record high
- 70°21° (2023)
- Record low
- −10°−23° (2015)
- Heating degree days
- 883
- Cooling degree days
- 0
Watch Hill in March
Highs average 47°8° and lows 32°0°, with 4.2 in106 mm of precipitation in a typical March.
- Record high
- 73°23° (2011)
- Record low
- 2°−17° (2015)
- Heating degree days
- 787
- Cooling degree days
- 0
Watch Hill in April
Highs average 57°14° and lows 41°5°, with 3.9 in99 mm of precipitation in a typical April.
- Record high
- 88°31° (2009)
- Record low
- 22°−6° (2016)
- Heating degree days
- 484
- Cooling degree days
- 1
Watch Hill in May
Highs average 67°19° and lows 50°10°, with 3.3 in84 mm of precipitation in a typical May.
- Record high
- 91°33° (2022)
- Record low
- 29°−2° (2008)
- Heating degree days
- 221
- Cooling degree days
- 14
Watch Hill in June
Highs average 75°24° and lows 59°15°, with 3.6 in90 mm of precipitation in a typical June.
- Record high
- 95°35° (2025)
- Record low
- 40°4° (2001)
- Heating degree days
- 42
- Cooling degree days
- 108
Watch Hill in July
Highs average 82°28° and lows 66°19°, with 2.9 in74 mm of precipitation in a typical July.
- Record high
- 100°38° (2010)
- Record low
- 47°8° (2002)
- Heating degree days
- 1
- Cooling degree days
- 272
Watch Hill in August
Highs average 81°27° and lows 64°18°, with 3.5 in89 mm of precipitation in a typical August.
- Record high
- 93°34° (2018)
- Record low
- 47°8° (2025)
- Heating degree days
- 4
- Cooling degree days
- 233
Watch Hill in September
Highs average 74°24° and lows 57°14°, with 3.8 in97 mm of precipitation in a typical September.
- Record high
- 92°33° (2018)
- Record low
- 34°1° (2020)
- Heating degree days
- 65
- Cooling degree days
- 88
Watch Hill in OctoberThis month
Highs average 64°18° and lows 47°8°, with 4.3 in109 mm of precipitation in a typical October.
- Record high
- 88°31° (2019)
- Record low
- 25°−4° (2020)
- Heating degree days
- 315
- Cooling degree days
- 11
Watch Hill in November
Highs average 54°12° and lows 38°3°, with 3.5 in89 mm of precipitation in a typical November.
- Record high
- 75°24° (2022)
- Record low
- 13°−11° (2000)
- Heating degree days
- 573
- Cooling degree days
- 0
Watch Hill in December
Highs average 45°7° and lows 30°−1°, with 3.8 in96 mm of precipitation in a typical December.
- Record high
- 65°18° (2015)
- Record low
- 4°−16° (2002)
- Heating degree days
- 849
- Cooling degree days
- 0