KPSM temperature trend
Portsmouth International Airport at Pease
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
30 °C
Sep 10, 2026
Coldest
6 °C
Sep 20, 2026
Mean temperature
17.8 °C
Mean dew point
11.9 °C
395 archived observations · Archive updated continuously
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