Weather & Climate in Hartford, CT

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Hartford experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 37°F in January while summers reach 75°F in July. The area gets 268 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 55.4 inches (wetter than the 38-inch national average). The area receives 20.7 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 39. 77% of days have good air quality. The city sits at an elevation of 33 feet.

Temperature

37°F Jan (3°C) 75°F Jul (24°C)

Annual Average	53.0°F
	2% below US avg
January Average	37°F (3°C)
July Average	75°F (24°C)
Sunny Days	268 days/yr

Geography

Elevation	33 ft (10 m)
Area	18.1 sq mi (46.8 km²)
Population Density	6,903/sq mi
Coordinates	41.7659°N, 72.6816°W
Timezone	America/New_York
County	Capitol Planning Region County
Nearest Airport	Bradley International (BDL) 12 miles away

Precipitation & Snow

Annual Rainfall 55.4"

46% above US avg

Snowfall 20.7"

Wettest Month (May) 4.13"

Driest Month (Feb) 3.27"

Air Quality

AQI Median	39.0
Rating	Good
Good Days %	76.5%
Unhealthy Days	7

Natural Hazard Risk

Overall Risk	Relatively High
Risk Score	97.4 / 100
Social Vulnerability	28.1 / 100
Community Resilience	64.2 / 100

Hazard Breakdown

Tornado	Relatively High
Hurricane	Relatively High
Earthquake	Relatively Moderate
Wildfire	Very Low
Flood	Relatively High
Hail	Relatively Moderate
Strong Wind	Relatively Moderate
Heat Wave	Relatively Moderate
Winter Weather	Relatively High
Lightning	Relatively High
Ice Storm	Very High
Drought	Relatively Low
Cold Wave	Relatively High
Landslide	Relatively Moderate
Coastal Flood	Very Low

Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

24 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.7.

Oct 2, 1994	6 km W of Hardwick, Massachusetts	M3.7	73 km	10 km
Jan 12, 2015	0 km NE of Wauregan, Connecticut	M3.3	65 km	5 km
Oct 2, 1994	1 km NW of Hardwick, Massachusetts	M3.3	76 km	10 km
Jun 16, 2000	5 km NE of Granville, Massachusetts	M3.3	39 km	10 km
Dec 13, 2009	15 km N of Medusa, New York	M3.2	148 km	10 km
Mar 22, 1996	2 km NE of Bristol, Rhode Island	M3.1	120 km	12 km
May 18, 2009	15 km N of Medusa, New York	M3.1	148 km	9 km
Oct 28, 1991	3 km WNW of Stamford, Connecticut	M3.0	108 km	10 km
Oct 21, 2009	15 km N of Medusa, New York	M2.9	148 km	7 km
Aug 5, 2025	1 km N of Hillsdale, New Jersey	M2.8	141 km	12 km
Mar 10, 1992	2 km SW of Napeague, New York	M2.8	100 km	10 km
Sep 28, 2002	2 km N of Wilton, New Hampshire	M2.8	146 km	5 km
Apr 12, 1991	2 km ENE of North Castle, New York	M2.7	106 km	9 km
Oct 13, 1999	2 km E of Littleton Common, Massachusetts	M2.7	134 km	2 km
Feb 18, 2009	15 km N of Medusa, New York	M2.7	147 km	9 km
Aug 14, 2014	6 km SW of Deep River Center, Connecticut	M2.7	49 km	4 km
Feb 20, 2009	15 km SSW of Altamont, New York	M2.7	147 km	8 km
Aug 22, 2000	2 km WSW of Brewster Hill, New York	M2.6	88 km	7 km
Apr 22, 1996	3 km NE of North Westport, Massachusetts	M2.6	135 km	5 km
Jan 13, 2015	2 km E of Wauregan, Connecticut	M2.6	67 km	9 km

Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Hurricane History

3 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 2.

Year	Name	Category	Max Wind	Closest
2021	Henri	Category 1	75 mph	299 km
1991	Bob	Category 2	104 mph	110 km
1985	Gloria	Category 1	86 mph	18 km

Source: NOAA IBTrACS (Category 1+, 1980–2026).

Tornado History

244 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 111 fatalities, 2,229 injuries.

Date	Rating	Distance	Path	Fatalities
May 29, 1995	EF4	79 km	11.5 mi	3
Jul 10, 1989	EF4	47 km	3.0 mi	0
Oct 3, 1979	EF4	13 km	11.3 mi	3
Aug 28, 1973	EF4	95 km	9.8 mi	4
Jun 9, 1953	EF4	89 km	34.9 mi	94
Jun 1, 2011	EF3	38 km	37.6 mi	3
Jun 22, 1981	EF3	98 km	7.1 mi	0
Sep 13, 1971	EF3	63 km	0.5 mi	0
Jul 29, 1971	EF3	39 km	0.1 mi	0
Oct 3, 1970	EF3	76 km	35.4 mi	1
May 24, 1962	EF3	44 km	11.6 mi	1
May 10, 1954	EF3	25 km	0.3 mi	0
Jun 9, 1953	EF3	88 km	28.0 mi	0
Aug 21, 1951	EF3	26 km	0.1 mi	0
Aug 18, 2023	EF2	92 km	9.1 mi	0
May 15, 2018	EF2	89 km	1.2 mi	0
Jul 11, 2006	EF2	90 km	2.9 mi	0
Jun 23, 2001	EF2	37 km	0.5 mi	0
Aug 8, 1999	EF2	86 km	4.0 mi	0
Jul 3, 1997	EF2	61 km	3.7 mi	0

Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

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	—	113 km

Source: NOAA/NCEI Historical Tsunami Database.

Wildfire History

1 wildfire (100+ acres) recorded within 100 km. Largest: CRESCENT BOW FIRE (1,068 acres, 2012).

Year	Name	Acres Burned	Distance
2012	CRESCENT BOW FIRE	1,068	99 km

Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	37°F (3°C)	3.5 in
February	28°F (-2°C)	3.3 in	Coldest, Driest
March	38°F (3°C)	3.8 in
April	48°F (9°C)	4.0 in
May	59°F (15°C)	4.1 in	Wettest
June	68°F (20°C)	3.9 in
July	75°F (24°C)	3.7 in	Warmest
August	72°F (22°C)	3.7 in
September	64°F (18°C)	3.9 in
October	52°F (11°C)	3.7 in
November	43°F (6°C)	4.1 in
December	32°F (-0°C)	4.0 in

Hartford has a seasonal temperature swing of 47°F / from 28°F in February to 75°F in July. Total annual precipitation is 45.6 inches, with May being the wettest month (4.1") and February the driest (3.3").

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