Connecticut heat
Every recorded heat record since 1996 · 7 counties with a record
NOAA's Storm Events Database records 185 heat records in Connecticut from 1996 through June 30, 2026, about 9.2 a year since 2000. The deadliest was the July 2, 2002 heat in Fairfield County: 1 death. Connecticut ranks 37th of 51 states and territories by count and 13th of 50 per square mile.
Heat in Connecticut, 1996 to 2026
Heat records per year (NOAA Storm Events); 2026 to June 30, 2026.
- recorded, no damage figure
- under $1 million
- $1 million or more
- $10 million or more
- $100 million or more, or 10 deaths
- $1 billion or more, or 100 deaths
- a year's colour: its recorded damage or deaths
- a year with a death
- Records
- 1851996 to June 30, 2026
- A year since 2000
- 9.2average
- Deaths
- 10 injuries
- Damage, 2025 dollars
- –as filed
- Busiest year
- 201922 records
Source: NOAA NCEI Storm Events Database, records through June 30, 2026; deaths and damage as filed, damage in 2025 dollars. Search the record at NCEI.
Are heat records common in Connecticut?
Connecticut averages about 9.2 heat records a year since 2000, 37th of 51 states and territories by count. The busiest year on record was 2019 (22). Per 10,000 square miles of land, Connecticut records 382 heat records since 1996, 13th of 50 states and territories by that measure.
Source: NOAA NCEI Storm Events Database, records since 1996, per 10,000 square miles of land area (Census Bureau 2024 Gazetteer; places under 1,000 square miles not ranked). Damage colours: Storm Events damage, 2025 dollars.
When is the heat season in Connecticut?
77% of its heat records since 1996 fell in July and August. The busiest month is July (110 records).
The values, month by month
Jan 1 · Feb 2 · Mar 6 · Apr 0 · May 4 · Jun 21 · Jul 110 · Aug 32 · Sep 6 · Oct 1 · Nov 0 · Dec 2 (records).
Source: NOAA NCEI Storm Events Database, records by the month they began, since 1996.
What were the deadliest heat records in Connecticut?
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2002-07-02 | HeatFairfield County · forecast zone Southern Fairfield Temperatures rose into the mid and upper 90s across interior Southern Connecticut and into the lower and mid 90s along the shores of Long Island Sound. High temperatures and humidities combined to produce heat indices from 100 to 105 degrees across the region, but especially across interior Southern Connecticut. In ... | 1 | 0 | – |
Source: NOAA NCEI Storm Events Database: deaths direct and indirect, as filed by the National Weather Service, summed over each storm (one episode, or one named storm filed by several offices). Storm names from the titles of FEMA declarations that name the storm's counties.
Are heat records becoming more frequent in Connecticut?
Connecticut's count per decade against the whole country's, and its share. NOAA recorded every event type only from 1996, so earlier decades are not comparable; the share of the national total is the fairer comparison across decades.
| Decade | Connecticut | United States | Connecticut's share |
|---|---|---|---|
| 1996-99 | 26 | 4,355 | 0.60% |
| 2000s | 25 | 9,163 | 0.27% |
| 2010s | 78 | 16,445 | 0.47% |
| 2020-26 | 56 | 26,796 | 0.21% |
Source: NOAA NCEI Storm Events Database.
The most recent heat records in Connecticut
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2026-06-12 | HeatLitchfield County · forecast zone Southern Litchfield | 0 | 0 | – | |
| 2026-06-11 | HeatLitchfield County · forecast zone Southern Litchfield | 0 | 0 | – | |
| 2025-07-30 | HeatLitchfield County · forecast zone Southern Litchfield | 0 | 0 | – | |
| 2025-07-29 | HeatLitchfield County · forecast zone Southern Litchfield | 0 | 0 | – | |
| 2025-07-29 | HeatLitchfield County · forecast zone Northern Litchfield | 0 | 0 | – | |
| 2025-07-25 | HeatLitchfield County · forecast zone Southern Litchfield | 0 | 0 | – | |
| 2025-07-25 | HeatLitchfield County · forecast zone Northern Litchfield | 0 | 0 | – | |
| 2025-07-17 | HeatLitchfield County · forecast zone Southern Litchfield | 0 | 0 | – | |
| 2025-07-17 | HeatLitchfield County · forecast zone Northern Litchfield | 0 | 0 | – | |
| 2025-07-16 | HeatLitchfield County · forecast zone Southern Litchfield | 0 | 0 | – | |
| 2025-07-16 | HeatLitchfield County · forecast zone Northern Litchfield | 0 | 0 | – | |
| 2025-07-08 | HeatLitchfield County · forecast zone Southern Litchfield | 0 | 0 | – |
Source: NOAA NCEI Storm Events Database, records through June 30, 2026; the newest months are revised by NCEI as reports arrive. Search the record at NCEI.