Freely Downloadable Data Sets Updated Daily

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

Latest updates. In Maine, heating degree days stood at 12.0 degrees Fahrenheit on 28 September 2026, compared to 8.0 on 27 September.

Sample. There are 16,707 data points in the daily series displayed in the graph above. The time period covered by the series stretches from January 1981 to September 2026.

History. Here's a snapshot of some descriptive statistics we calculated on the full sample: degree days reached a trough of 0.0 degrees Fahrenheit on 26 May 1981; they reached their highest level of 78.0 on 4 January 1981; they had an average value of 21.5.

Latest values

Date Value - Degrees Fahrenheit
2026-09-26 5.0
2026-09-27 8.0
2026-09-28 12.0

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Series Metadata

Field Value
Description Heating degree days
Country Maine (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 16707 1981-01-01 2026-09-28
Heating degree days (F) - Arkansas (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Arizona (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - California (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Colorado (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Connecticut (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Delaware (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Florida (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Georgia (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Iowa (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Idaho (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Illinois (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Indiana (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Kansas (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Kentucky (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Louisiana (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Massachusetts (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Maryland (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Maine (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Michigan (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Minnesota (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Missouri (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Mississippi (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Montana (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - North Carolina (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - North Dakota (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Nebraska (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - New Hampshire (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - New Jersey (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - New Mexico (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Nevada (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - New York (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Ohio (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Oklahoma (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Oregon (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Pennsylvania (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - RhodeIsland (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - South Carolina (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - South Dakota (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Tennessee (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Texas (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Utah (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Virginia (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Vermont (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Washington (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Wisconsin (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - WestVirginia (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - Wyoming (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Heating degree days (F) - United States (excluding Alaska and Hawaii) - NOAA - Daily 16707 1981-01-01 2026-09-28

Cooling degree days

Series Name Observations Start Date End Date
Cooling degree days (F) - Alabama (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Arkansas (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Arizona (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - California (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Colorado (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Connecticut (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Delaware (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Florida (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Georgia (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Iowa (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Idaho (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Illinois (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Indiana (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Kansas (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Kentucky (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Louisiana (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Massachusetts (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Maryland (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Maine (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Michigan (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Minnesota (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Missouri (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Mississippi (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Montana (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - North Carolina (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - North Dakota (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Nebraska (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - New Hampshire (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - New Jersey (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - New Mexico (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Nevada (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - New York (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Ohio (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Oklahoma (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Oregon (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Pennsylvania (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - RhodeIsland (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - South Carolina (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - South Dakota (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Tennessee (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Texas (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Utah (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Virginia (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Vermont (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Washington (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Wisconsin (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - WestVirginia (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - Wyoming (US) - NOAA - Daily 16707 1981-01-01 2026-09-28
Cooling degree days (F) - United States (excluding Alaska and Hawaii) - NOAA - Daily 16707 1981-01-01 2026-09-28