
Week-4 Upper Air Forecasts for North America
10/20/2025, 7:30 pm EDT
Climate Impact Company U.S. Medium Range Report
Issued: Thursday October 23, 2025
Highlight: U.S. medium-range forecast is trending warmer West.
Chart of the day: NOAA/CPC storm risks in the 6-10-day period.

Discussion: NOAA/CPC projects risk of significant storms in the Northeast and Northwest U.S. valid in the late October/early November timeframe. Heavy precipitation and high wind risk are featured.
Medium-range 6-10 Day Forecast Valid October 28-November 1, 2025 (24-hour change right)


Discussion: The warm West/cool Southeast forecast remains intact during the 6-10-day period. The West is trending warmer since yesterday’s outlook.
Medium-range 11-15 Day Forecast Valid November 2-6, 2025 (24-hour change right)


Discussion: Once again, a significantly warmer change across the West/Central U.S. since yesterday to an already warm West/Central U.S. forecast in the 11-15-day timeframe.
U.S. Medium-range Precipitation Forecast


Discussion: Stormy weather is forecast across the Coastal Northeast Corridor stretch during the 6-10-day period while the AR pattern into Washington continues. The ECM ENS is drier than normal in the 11-15-day period for much of the U.S.
Days 16-20 Extended range Temperature Forecast valid November 7-11, 2025


Discussion: Preferring a warmer change on the East Coast as indicated by AI Graph Cast for the extended range outlook. Storminess suppresses warm risk in the North-central U.S. The Southwest States are not as warm.


