KDCA temperature trend
Ronald Reagan Washington National Airport
Temperature and dew point over time. The gap between them is what decides fog, and the temperature itself is what decides your density altitude and takeoff run.
Warmest
32 °C
Sep 10, 2026
Coldest
12 °C
Sep 24, 2026
Mean temperature
22.0 °C
Mean dew point
15.8 °C
586 archived observations · Archive updated continuously
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