North Granby, CT

Full City Profile · Connecticut · Hampden County County

4.9 /5.0
A+ Excellent
1,510 Population 181/sq mi density
$114,167 Median Income $63,885 per capita
$389,200 Home Value $319,623 Zillow
51°F Avg Temperature
A+
Overall
4.9 / 5.0
Strong
A+
Economy
5.0 / 5.0
$114,167 median income, 0.0% unemployment
A+
Affordability
4.8 / 5.0
$389,200 home value, /mo rent
A+
Education
5.0 / 5.0
52.3% bachelor's degree or higher
North Granby experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 27°F in January while summers reach 74°F in July. Annual precipitation totals 47.1 inches. The area receives 51.7 inches of snow annually.

Temperature

27°F Jan (-3°C) 74°F Jul (24°C)
Annual Average51.0°F
6% below US avg
January Average27°F (-3°C)
July Average74°F (24°C)

Geography

Elevation394 ft (120 m)
Area8.3 sq mi (21.6 km²)
Population Density181/sq mi
Coordinates42.0160°N, 72.8432°W
TimezoneAmerica/New_York
CountyHampden County County
Nearest AirportBradley International (BDL)
10 miles away

Precipitation & Snow

Annual Rainfall 47.1"
24% above US avg
Snowfall 51.7"
Wettest Month (Oct) 4.52"
Driest Month (Feb) 3.13"

Air Quality

Air Pollutants (EPA 2023)

Ozone (O₃)0.0438 ppm
NO₂ (Nitrogen Dioxide)11.3 ppb
SO₂ (Sulfur Dioxide)0.22 ppb
PM2.5 (Fine Particles)7.3 μg/m³

Natural Hazard Risk

Overall RiskRelatively Moderate
Risk Score92.8 / 100
Social Vulnerability64.5 / 100
Community Resilience73.2 / 100

Hazard Breakdown

Tornado Relatively Moderate
Hurricane Relatively High
Earthquake Relatively Moderate
Wildfire Very Low
Flood Relatively High
Hail Relatively Moderate
Strong Wind Relatively High
Heat Wave Relatively Moderate
Winter Weather Relatively Moderate
Lightning Relatively Moderate
Ice Storm Relatively High
Drought Relatively Low
Cold Wave Relatively Moderate
Landslide Relatively Low
Avalanche Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

30 earthquakes (M2.5+) within 150 km since 1990. Strongest: M3.7. Most recent: M2.8 on Aug 5, 2025.

Oct 2, 1994 6 km W of Hardwick, Massachusetts M3.7 59 km
Oct 2, 1994 1 km NW of Hardwick, Massachusetts M3.3 64 km
Jan 12, 2015 0 km NE of Wauregan, Connecticut M3.3 83 km
Jun 16, 2000 5 km NE of Granville, Massachusetts M3.3 10 km
Dec 13, 2009 15 km N of Medusa, New York M3.2 121 km
Mar 22, 1996 2 km NE of Bristol, Rhode Island M3.1 138 km
May 18, 2009 15 km N of Medusa, New York M3.1 121 km
Jul 24, 2007 12 km SSW of Altamont, New York M3.1 124 km
Oct 28, 1991 3 km WNW of Stamford, Connecticut M3.0 122 km
Oct 21, 2009 15 km N of Medusa, New York M2.9 121 km
Aug 5, 2025 1 km N of Hillsdale, New Jersey M2.8 149 km
Sep 28, 2002 2 km N of Wilton, New Hampshire M2.8 132 km
Mar 10, 1992 2 km SW of Napeague, New York M2.8 130 km
Aug 27, 2011 5 km WSW of Altamont, New York M2.8 127 km
Mar 22, 2009 9 km SW of Altamont, New York M2.8 125 km
Oct 13, 1999 2 km E of Littleton Common, Massachusetts M2.7 130 km
Apr 12, 1991 2 km ENE of North Castle, New York M2.7 117 km
Sep 30, 1991 0 km SSE of Bedford, New Hampshire M2.7 150 km
Aug 25, 2011 5 km WSW of Altamont, New York M2.7 127 km
Feb 18, 2009 15 km N of Medusa, New York M2.7 121 km
Source: USGS (M2.5+, 1990-2025)

Hurricane History

2 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 2. Most recent: Bob (1991, Cat 2).

Year Name Category Closest
1991 Bob Category 2 138 km
1985 Gloria Category 1 13 km
Source: NOAA IBTrACS (Cat 1+, 1980-2026)

Tornado History

267 tornadoes (EF0+) within 100 km since 1950. Strongest: EF4. Total: 111 fatalities, 2,241 injuries.

Date Rating Distance Fatalities
May 29, 1995 EF4 53 km 3
Jul 10, 1989 EF4 71 km 0
Oct 3, 1979 EF4 21 km 3
Aug 28, 1973 EF4 65 km 4
Jun 9, 1953 EF4 75 km 94
Jun 1, 2011 EF3 12 km 3
Jun 22, 1981 EF3 86 km 0
Jun 16, 1974 EF3 85 km 0
Sep 13, 1971 EF3 38 km 0
Jul 29, 1971 EF3 55 km 0
Oct 3, 1970 EF3 66 km 1
May 24, 1962 EF3 57 km 1
May 10, 1954 EF3 33 km 0
Jun 9, 1953 EF3 90 km 0
Aug 21, 1951 EF3 56 km 0
May 15, 2018 EF2 90 km 0
Jul 11, 2006 EF2 70 km 0
Jul 21, 2003 EF2 95 km 0
Jul 21, 2003 EF2 83 km 0
Jun 23, 2001 EF2 33 km 0
Source: NOAA SPC (EF0+, 1950-2024)

Tsunami History

1 tsunami recorded within 500 km. Highest wave on record: 0.3 m (1 ft).

Year Location Cause Max Wave Deaths Distance
1964 LONG ISLAND, NY Meteorological 0.3 m - 137 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Wildfire History

1 wildfire (100+ acres) within 100 km. Largest: EAST MOUNTAIN (964 ac, 2021).

Year Name Acres Distance
2021 EAST MOUNTAIN 964 83 km
Source: NIFC/IRWIN (100+ acres)

Monthly Weather

Month Avg Temperature Precipitation Summary
January 27°F (-3°C) 3.3 in Coldest
February 30°F (-1°C) 3.1 in Driest
March 38°F (3°C) 3.8 in
April 50°F (10°C) 3.9 in
May 60°F (16°C) 3.8 in
June 69°F (21°C) 4.3 in
July 74°F (24°C) 4.2 in Warmest
August 73°F (23°C) 4.2 in
September 65°F (18°C) 4.4 in
October 53°F (12°C) 4.5 in Wettest
November 42°F (6°C) 3.5 in
December 33°F (0°C) 4.1 in

North Granby has a seasonal temperature swing of 47°F / from 27°F in January to 74°F in July. Total annual precipitation is 47.1 inches, with October being the wettest month (4.5") and February the driest (3.1").

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