Free degree day data, powered by EnergyCAP

Quickly see how seasonal weather patterns influence building energy use. Weather Data Depot delivers:

  • Complete degree day records from over 14,000 U.S. and Canadian weather stations.
  • Reports and charts for degree days, average daily temperatures, and more. Export reports with one click.
  • Daily detail views, including Wet Bulb Temp, for deeper analysis.

Want to press the easy button? EnergyCAP automates weather normalization as part of its robust utility data analysis; no separate tools, no manual spreadsheets, and no calculators required. Learn more at EnergyCAP.com.

EnergyCAP: Turn Chaos into Clarity
Degrees

Monthly Degree Day Comparison

Base Year ()Comparison Year ()Comparison Percentages
MonthHDDCDDTDDHDDCDDTDDHDDCDDTDD

* January daily data will be available on February 1, when the complete month will be posted.

A negative percentage means the Comparison Year was more mild than the Base Year. A positive percentage means the Comparison Year was more severe than the Base Year. When the monthly degree days in either the base year or the comparison year are less than 30, a percentage comparison is not calculated. However, the Annual Total comparison percentages include all heating and cooling degree days.

Degrees

Average Daily Temperature

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Degrees

Cumulative Cooling Degree Days

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Degrees

Cumulative Calendar Heating Degree Days

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Degrees

Average Daily High Temperature

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Each monthly value is the average of the station's daily high (or low) temperatures for that month.

Average Daily Mean Relative Humidity

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Each monthly value is the average of the station's daily relative humidity values for that month. Months without humidity data are left blank, and years without any are not shown.

Degrees

Average Daily Mean Dew Point

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Each monthly value is the average of the station's daily dew points for that month. Months without dew point data are left blank, and years without any are not shown.

Degrees

Average Daily Mean Wet Bulb Temperature

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