GWDD Decomposition · 2026-10-16 00z · Updated Oct 16, 2026 at 09:08 PM UTC / Oct 16 at 04:08 PM CT
NOAA Temperature Outlook
6–10 Day Temperature Outlook
8–14 Day Temperature Outlook
10-Day Cumulative Breakdown
HDD / CDD components per model
GFS
HDD 94.0
CDD 11.1
Total 105.1
IFS
HDD 89.7
CDD 10.0
Total 99.7
GEFS
HDD 96.3
CDD 9.1
Total 105.3
AIFS
HDD 71.9
CDD 14.4
Total 86.3
HDD-Only Forecast (Gas-Utility Weighted)
CDD-Only Forecast (Gas-Utility Weighted)
GWDD = HDD + CDD · all values gas-utility-consumption weighted across 9 EIA census divisions · National only · West not shown