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Heating degree days (F) - Connecticut (US) - NOAA - Daily

Latest updates. In Connecticut, heating degree days stood at 1.0 degrees Fahrenheit on 23 September 2025, compared to 7.0 on 22 September.

Sample. In this daily time series, there are 16,337 observations. The series covers the span of time going from January 1981 to September 2025.

History. Here are a few simple statistics we computed on the entire sample: degree days recorded their highest level of 65.0 degrees Fahrenheit on 18 January 1982; they reached a minimum of 0.0 on 25 May 1981; they had a mean value of 16.1.

Latest values

Date Value - Degrees Fahrenheit
2025-09-21 8.0
2025-09-22 7.0
2025-09-23 1.0

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Series Metadata

Field Value
Description Heating degree days
Country Connecticut (US)
Economic concept Heating needs
Data type Estimate based on daily minimum and maximum temperatures
Deflation method Not applicable
Seasonally adjusted No
Rescaling Population-weighted averages of weather-station observations
Frequency Daily
Unit Degrees Fahrenheit
Source NOAA National Weather Service
Source type Federal Administration
Data licence Not copyrightable under U.S. law
Measure type 65F - (max_daily_temperature + min_daily_temperature) / 2

Series in the same data set

Discover the other time series included in this data set.

Heating degree days

Series Name Observations Start Date End Date
Heating degree days (F) - Alabama (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Arkansas (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Arizona (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - California (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Colorado (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Connecticut (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Delaware (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Florida (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Georgia (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Iowa (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Idaho (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Illinois (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Indiana (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Kansas (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Kentucky (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Louisiana (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Massachusetts (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Maryland (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Maine (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Michigan (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Minnesota (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Missouri (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Mississippi (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Montana (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - North Carolina (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - North Dakota (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Nebraska (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - New Hampshire (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - New Jersey (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - New Mexico (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Nevada (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - New York (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Ohio (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Oklahoma (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Oregon (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Pennsylvania (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - RhodeIsland (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - South Carolina (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - South Dakota (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Tennessee (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Texas (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Utah (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Virginia (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Vermont (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Washington (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Wisconsin (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - WestVirginia (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - Wyoming (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Heating degree days (F) - United States (excluding Alaska and Hawaii) - NOAA - Daily 16337 1981-01-01 2025-09-23

Cooling degree days

Series Name Observations Start Date End Date
Cooling degree days (F) - Alabama (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Arkansas (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Arizona (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - California (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Colorado (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Connecticut (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Delaware (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Florida (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Georgia (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Iowa (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Idaho (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Illinois (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Indiana (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Kansas (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Kentucky (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Louisiana (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Massachusetts (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Maryland (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Maine (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Michigan (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Minnesota (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Missouri (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Mississippi (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Montana (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - North Carolina (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - North Dakota (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Nebraska (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - New Hampshire (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - New Jersey (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - New Mexico (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Nevada (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - New York (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Ohio (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Oklahoma (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Oregon (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Pennsylvania (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - RhodeIsland (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - South Carolina (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - South Dakota (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Tennessee (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Texas (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Utah (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Virginia (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Vermont (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Washington (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Wisconsin (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - WestVirginia (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - Wyoming (US) - NOAA - Daily 16337 1981-01-01 2025-09-23
Cooling degree days (F) - United States (excluding Alaska and Hawaii) - NOAA - Daily 16337 1981-01-01 2025-09-23