Jun 18, 2025 - Climate
Colorado's summer nighttime temps are rising
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Wet, hot, American nights are here to stay.
State of play: Average summer nighttime temperatures in Denver increased 2.5°F between 1970 and 2024, according to a new report from Climate Central, a research organization.
- The same story is true in Grand Junction (+1.3°F) and Colorado Springs (+2.3°F).
What they're saying: Hundreds of U.S. cities are experiencing more frequent warmer-than-average summer nights "with a strong climate change fingerprint," Climate Central writes.
The big picture: The summer low temperatures jumped higher in 96% of 241 locations analyzed.
By the numbers: The effect is more prevalent in the Southwest. Reno, Nevada (+17.7°F), Las Vegas (+10°F), El Paso, Texas (+8.9°F) and Salt Lake City (+8.2°F) saw the biggest increases.