The Climate Impact Company U.S. selected cities CDD forecast for 2025 is updated. The summertime (JUN/JUL/AUG) CDD outlook adjusts hotter. The national average edges upward to 113.9% of the 30-year normal as the JJA-25 forecast edges close to 2022 and 2024 summertime observations which were 3rd and 4th hottest (respectively) on record.

The hottest day in the 7-day NOAA/NWS excessive heat forecast is next Tuesday when the Ohio Valley, including the Chicago area, eastward through the Mid-Atlantic encounters widespread dangerously hot conditions.

Incoming excessive heat event for PJM misses ERCOT. In the PJM-East sector the primary peak is June 23-25. During this time, forecast models agree on near the 100F risk for the DCA/BWI/PHL stretch and NYC/BDL/BOS will be close. Making this heatwave unique is the extreme humidity and therefore heat index. Heat indices routinely flirt with 110F in this type of heat.

NOAA/CPC has updated their monthly fire risk outlook for Canada, the U.S., and Mexico. The outlook continues to indicate a major westward expansion of fire risk in Canada for mid-to-late summer, steadily widening risk in the Northwest U.S. gradually reaching California while diminishing in Mexico and increasing in Texas.