"The strongest warm signal in the entire country sits squarely over Washington and Oregon, with a 60 to 70 percent probability of above-normal temperatures across the Pacific Northwest."
"Above-normal temperatures are also favored across the Northern Rockies, with probabilities generally in the 40-50 percent range, indicating a meaningful lean toward warmth."
"While most resorts in the Central and Southern Rockies will be closed or winding down by mid-May, the lingering high-elevation snowpack will face additional pressure from the warmth."
"California sits in a lighter shade of above-normal on the temperature map, with a 33-40 percent probability of a warmer-than-normal May, indicating a softer signal."
NOAA's May 2026 mountain weather outlook predicts warmer and drier conditions for the western United States. The Pacific Northwest, especially the Cascades, shows a 60 to 70 percent probability of above-normal temperatures. The Northern Rockies also indicate a 40-50 percent chance of warmth, impacting snowpack melt. Central and Southern Rockies, including Colorado and Utah, have similar probabilities. California's Sierra Nevada has a 33-40 percent chance of warmer conditions, though less pronounced than in the Northwest.
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