Excessive Heat in Connecticut

Events

49

Deaths

0

Injuries

0

Damage

None recorded

• Excessive Heat in Connecticut, July 22 to 23, 20118 eventsAn oppressive hot and humid air mass produced excessive heat that resulted in day time temperatures 95 to 105 degrees with night time lows in the 70s and 80s.
• Excessive Heat and Heat in Connecticut, July 15 to 19, 20138 eventsA large ridge of high pressure was situated along the eastern seaboard for the week of July 15th through July 19th. The flow around this high pressure ridge brought a very warm and humid air mass into Connecticut for much of the week, along with plenty of sunshine.
• Excessive Heat and Heat in Connecticut, July 21, 20197 eventsA Bermuda High pumped in a hot and humid and humid air mass northward into the area.
• Excessive Heat and Heat in Connecticut, July 20, 20197 eventsA Bermuda High pumped in a hot and humid and humid air mass northward into the area.
• Excessive Heat and Heat in Connecticut, June 22 to 25, 20257 eventsA dome of high pressure brought a period of very hot and humid conditions across northwestern Connecticut from June 22-25, 2025. Peak heat index values (or feels-like temperatures) were between 95 and 104 degrees Fahrenheit in many locations.
• Excessive Heat and Heat in Connecticut, July 6 to 7, 20106 eventsA strong ridge built into Southern New England resulting in temperatures nearing 100 with high humidity. Heat index values ranged from 100 to 106 for most of Southern New England on the 6th and again on the 7th in a more limited area, generally the Connecticut River Valley.
• Excessive Heat and Heat in Connecticut, July 21 to 23, 20115 eventsBermuda high pressure dominated the region with broad southwest flow aloft. This flow ushered in hot and humid air. Temperatures across Litchfield County warmed well into the 90s each day. On Friday July 22nd, the Thomaston Dam reported a high of 100 degrees.
• Excessive Heat and Heat in Connecticut, August 13, 201650 kt wind · 5 eventsOn the morning of Saturday, August 13th, a warm front lifted northward across the region. This allowed a very warm and excessively humid air mass to be in place over the area.
• Excessive Heat and Heat in Connecticut, July 19 to 21, 20194 eventsA heat wave gripped northwestern Connecticut from July 19th through the 21st. Temperatures soared to the mid-90s with dewpoints in the low to mid-70s. This resulted in heat index values in the 100 to 110 range in the warmest areas.
• Excessive Heat in Connecticut, July 22, 20112 eventsA strong upper level ridge brought very hot temperatures to Southern New England. A moist southwest low level flow increased humidity levels such that heat index values rose above 105 degrees for a period of a few hours.
• Excessive Heat in Connecticut, July 19, 20132 eventsA large area of high pressure remained nearly stationary to the south resulting in excessive heat across the area.
• Excessive Heat in Connecticut, August 13, 20162 eventsHigh pressure over the western Atlantic Ocean ushered in hot and humid air northward across the area.
• Excessive Heat in Connecticut, July 1 to 5, 20182 eventsA hot and humid airmass brought excessively high heat indices to northwestern Connecticut from the beginning of July through the Independence Day holiday. Temperatures soared as high as 99 degrees on July 1st, the hottest day of the stretch.
• Excessive Heat in Connecticut, July 1, 20182 eventsA Bermuda high pumped in heat and high humidity across the area.
• Excessive Heat in Connecticut, July 1, 20182 eventsAn area of high pressure over the Eastern USA brought hot and very humid air to Southern New England on July 1st. Heat Index values of 105 to 109 occurred in parts of Northern Connecticut, while the remainder of the region had values around 100.
• Excessive Heat in Connecticut, March 8 to 9, 20001 eventThe season's first Bermuda type high, pumped unseasonably warm weather across Litchfield county on March 8 and March 9. Temperatures climbed through the 60s to around 70 degrees.
• Excessive Heat in Connecticut, May 7, 20001 eventThe high temperature at Bradley International Airport in Windsor Locks reached 93 degrees, which tied the record high for the date set in 1930.
• Excessive Heat in Connecticut, May 8, 20001 eventThe high temperature at Bradley International Airport in Windsor Locks reached 92 degrees at 247 pm EDT, which broke the previous record high for the date of 90 degrees set in 1936.
• Excessive Heat in Connecticut, October 14, 20001 eventThe high temperature of 81 degrees at Bradley International Airport in Windsor Locks tied the record high for the date which was set in 1954.
• Excessive Heat in Connecticut, May 4, 20011 eventThe high temperature reached 91 degrees at Bradley International Airport in Windsor Locks, which broke the previous record high of 85 degrees set in 1965.
• Excessive Heat in Connecticut, May 12, 20011 eventThe high temperature of 89 degrees at Bradley International Airport in Windsor Locks broke the record high for the date, which was 88 degrees set in 1991.
• Excessive Heat in Connecticut, July 21, 20111 eventA strong upper level ridge brought very hot temperatures to Southern New England. A moist southwest low level flow increased humidity levels such that heat index values rose above 105 degrees for a period of a few hours.
• Excessive Heat in Connecticut, July 18, 20121 eventHigh pressure remained over the western Atlantic as a cold front approached from the west.
• Excessive Heat in Connecticut, August 12, 20161 eventHigh pressure over the western Atlantic Ocean ushered in hot and humid air northward across the area.

Excessive Heat everywhereEvery kind of event in Connecticut

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.