Latest News
06/23/2025, 8:22 am EDT
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.
06/19/2025, 6:36 am EDT
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.
06/17/2025, 3:31 pm EDT
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.
06/16/2025, 5:54 am EDT
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.
06/13/2025, 9:07 am EDT
The U.S. national temperature is suppressed near normal for a few days primarily due to East U.S. rains. However, as the wet belt lifts northward during the medium range, hotter weather emerges, especially in high population areas of the East causing the national temperature surge somewhat warmer than normal.
Climate Impact Company Chart of the Day
Southern Brazil Cold Coffee Risk TUE/WED
The 12Z GFS maintains an over-the-weekend cold risk into Southeast Brazil on TUE/WED morning. The cold risk reaches the southern Brazil coffee-growing areas each morning. Some damage is possible given the GFS outlook.
Climate Impact Company Climate Diagnostics
NAWH Pattern Strongest Since 2018, Fuels Mid-summer East N.A./Europe Heat (and Dryness)
Formation of the North Atlantic warm hole (NAWH), the strongest since 2018 fuels an upper air pattern promoting hot and potentially dry high pressure ridge areas across the East U.S. and much of Europe for mid-summer. Dangerously hot weather is developing and the risk of continuation during July has increased significantly.