Weighted Heating and Cooling Degree Days

NOAA Climate Prediction Center daily degree days (base 65°F) from 2000, about two days behind.

NOAAWeather data ERCOT market NYISO market CAISO market PJM market MISO market ISO-NE market SPP market

One row per: day x measure x weighting x region; Daily cadence
Evidence: Observed market data; Published observations from the named source
Time basis: Date-labelled records; UTC · event_time

Overview

One row per day, measure (heating or cooling), weighting, region_set and region. weighting is population, or utility_gas for heating degree days weighted by homes that heat with utility gas, the standard weather proxy for residential and commercial gas demand. region_set is census_division (the nine divisions by name, plus CONUS) or state (two-letter codes, population-weighted). Compare a period with the same period in earlier years; never add degree days across weightings, region sets or measures. Published by NOAA CPC.

Query contract: Preserve one canonical row per (event_time, measure, weighting, region_set, region) before aggregating.
Analysis rules: Read with FINAL; filter one measure, one weighting and one region_set before aggregating.Degree days add over days within one region; average them over regions only with weights.
Interpretation: Degree days measure temperature against 65°F; they are a demand proxy, not gas or power demand.Published by NOAA CPC; attribute it whenever it is reported.

Access

Download: Query it in SQL, download it, or read it with an API key. Download data
MCP: Connect an MCP client and load the contract with describe_data before calling query_data.ERCOT MCP CAISO MCP NYISO MCP PJM MCP SPP MCP MISO MCP ISO-NE MCP BPA MCP API reference
HTTP endpoint: POST /api/v1/datasets/noaa_cpc_degree_days/query
Full history: Delivered to Snowflake, Databricks or your own storage on a schedule by Data services.
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Schema

8 columns

Column	Type
`event_time`	`DateTime64(6, 'UTC')`
`measure`	`LowCardinality(String)`
`weighting`	`LowCardinality(String)`
`region_set`	`LowCardinality(String)`
`region`	`LowCardinality(String)`
`degree_days`	`Nullable(Float64)`
`source_url`	`String`
`ingested_at`	`DateTime64(6, 'UTC')`

Sample data

No sample rows yet.

Coverage

Coverage is not measured yet.

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