HDD / CDD Forecasts
National Weather Service Population Weighted Heating / Cooling Degree Day Forecasts

How to read this table
Population Weighted Cooling Degree Days
Region 15 May 16 May 17 May 18 May 19 May 20 May 21 May Total Diff from Avg.
1 0 | 0 | 0 | 0 | 0 | 0 | 0 0 | 0 | 0 | 0 | 0 | 0 0 | 0 | 0 | 0 | 0 0 | 0 | 0 | 0 1 | 0 | 0 1 | 0 0 2 1 | 100.0%
2 0 | 0 | 0 | 0 | 0 | 0 | 0 0 | 0 | 0 | 0 | 0 | 0 0 | 0 | 0 | 0 | 0 0 | 0 | 0 | 0 1 | 0 | 0 2 | 0 1 4 -2 | -33.33%
3 0 | 0 | 0 | 0 | 0 | 0 | 0 0 | 0 | 0 | 0 | 0 | 0 0 | 0 | 0 | 0 | 0 0 | 0 | 0 | 0 2 | 1 | 0 4 | 3 5 11 3 | 37.5%
4 0 | 0 | 0 | 0 | 0 | 0 | 0 0 | 0 | 1 | 0 | 1 | 1 1 | 0 | 1 | 1 | 2 1 | 1 | 1 | 0 2 | 2 | 1 3 | 2 5 12 0 | 0.0%
5 3 | 3 | 3 | 3 | 3 | 3 | 4 3 | 3 | 3 | 4 | 4 | 4 4 | 5 | 4 | 5 | 5 5 | 6 | 6 | 6 6 | 7 | 7 8 | 8 9 38 -7 | -15.56%
6 0 | 0 | 0 | 0 | 0 | 1 | 1 3 | 3 | 2 | 2 | 2 | 3 4 | 4 | 4 | 4 | 5 5 | 5 | 5 | 5 7 | 7 | 6 8 | 8 9 36 2 | 5.88%
7 7 | 7 | 6 | 6 | 6 | 7 | 7 8 | 8 | 8 | 9 | 8 | 9 10 | 10 | 10 | 10 | 10 10 | 10 | 10 | 10 9 | 9 | 10 10 | 9 9 63 0 | 0.0%
8 5 | 5 | 5 | 5 | 5 | 5 | 5 3 | 3 | 3 | 4 | 3 | 4 2 | 3 | 3 | 3 | 3 4 | 4 | 4 | 4 5 | 5 | 4 4 | 5 3 26 -2 | -7.14%
9 0 | 0 | 0 | 0 | 0 | 0 | 0 0 | 0 | 0 | 0 | 0 | 0 0 | 0 | 0 | 0 | 0 0 | 0 | 0 | 0 0 | 0 | 0 0 | 0 0 0 -7 | -100.0%
CONUS 2 | 2 | 2 | 2 | 2 | 2 | 2 2 | 2 | 2 | 2 | 2 | 3 3 | 3 | 3 | 3 | 3 3 | 3 | 3 | 3 4 | 3 | 3 5 | 4 5 24 0 | 0.0%
Utility Gas Weighted Heating Degree Days
Region 15 May 16 May 17 May 18 May 19 May 20 May 21 May Total Diff from Avg.
1 4 | 6 | 6 | 7 | 8 | 8 | 10 4 | 5 | 6 | 7 | 8 | 8 5 | 6 | 6 | 7 | 8 3 | 5 | 6 | 7 0 | 5 | 5 1 | 5 4 21 -42 | -66.67%
2 6 | 6 | 6 | 7 | 8 | 8 | 8 6 | 6 | 5 | 6 | 7 | 6 6 | 6 | 5 | 6 | 5 3 | 4 | 3 | 4 0 | 2 | 3 0 | 2 1 22 -26 | -54.17%
3 8 | 8 | 8 | 9 | 9 | 7 | 7 5 | 6 | 6 | 6 | 6 | 4 3 | 3 | 3 | 3 | 2 1 | 1 | 2 | 3 0 | 0 | 2 0 | 0 0 17 -29 | -63.04%
4 5 | 6 | 6 | 6 | 6 | 4 | 3 3 | 3 | 4 | 4 | 4 | 3 1 | 1 | 2 | 3 | 2 0 | 0 | 2 | 4 0 | 0 | 1 0 | 1 0 9 -27 | -75.0%
5 4 | 4 | 4 | 4 | 4 | 4 | 3 3 | 3 | 2 | 2 | 2 | 1 2 | 2 | 1 | 1 | 1 1 | 0 | 0 | 0 0 | 0 | 0 0 | 0 0 10 -2 | -16.67%
6 4 | 4 | 4 | 4 | 4 | 3 | 2 1 | 2 | 1 | 1 | 1 | 1 0 | 0 | 0 | 0 | 0 0 | 0 | 0 | 0 0 | 0 | 0 0 | 0 0 5 -9 | -64.29%
7 0 | 0 | 0 | 0 | 0 | 0 | 0 0 | 0 | 0 | 0 | 0 | 0 0 | 0 | 0 | 0 | 0 0 | 0 | 0 | 0 0 | 0 | 0 0 | 0 0 0 0 | NaN%
8 5 | 5 | 5 | 5 | 4 | 4 | 4 5 | 5 | 5 | 6 | 5 | 5 6 | 5 | 6 | 6 | 7 6 | 5 | 6 | 6 5 | 6 | 7 7 | 7 8 42 6 | 16.67%
9 6 | 5 | 5 | 4 | 5 | 3 | 4 6 | 6 | 5 | 4 | 5 | 5 5 | 4 | 4 | 3 | 4 4 | 4 | 5 | 4 7 | 5 | 5 8 | 4 6 42 8 | 23.53%
CONUS 6 | 5 | 5 | 6 | 6 | 5 | 5 4 | 4 | 4 | 4 | 4 | 4 3 | 3 | 3 | 3 | 3 2 | 2 | 3 | 3 2 | 2 | 2 2 | 2 2 21 -7 | -25.0%

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