Releases / United States

Population-weighted heating and cooling degree days, weekly (NOAA Climate Prediction Center) release schedule and API

NOAA CPC. Source: NOAA Climate Prediction Center. Licence: public-domain.

Next releases

ReleaseUTCAgency local time
Weekly degree days07:00 local (UTCZ)
Weekly degree days07:00 local (UTCZ)
Weekly degree days07:00 local (UTCZ)
Weekly degree days07:00 local (UTCZ)
Weekly degree days07:00 local (UTCZ)
Weekly degree days07:00 local (UTCZ)

From the agency's own calendar, as of 2026-11-13. Reschedules and cancellations are in the API.

How fast it reaches the API

ReleaseMeasuredMedianFastestSlowestMissed
DD2112 s112 s113 s0

Time from the agency publishing to the data being on our feed, for releases caught live in the last 30 days. Every release counts, including slow ones and misses.

Get it by API

Series ids: US.HDD.POPWT.US.NSA.

# pip install econfeed-client
from econfeed_client import Client

ef = Client()  # ECONFEED_API_KEY from the environment
for e in ef.calendar(days=90, source="us_cpc_degreedays"):
    print(e.scheduled_at, e.release_name, e.reference_period)

# add as_of= for what was known then
page = ef.observations("US.HDD.POPWT.US.NSA", start="2024-01")

# pushed seconds after release
for ev in ef.stream(sources=["us_cpc_degreedays"]):
    print(ev.type, ev.data.release_id)

REST: GET /v1/calendar?source=us_cpc_degreedays, GET /v1/series/US.HDD.POPWT.US.NSA/observations. Webhooks: filter on source us_cpc_degreedays.