KGPC temperature trend
Greencastle/Putnam Cnty, IN, US
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
33 °C
Sep 17, 2026
Coldest
8 °C
Sep 27, 2026
Mean temperature
20.8 °C
Mean dew point
16.7 °C
813 archived observations · Archive updated continuously
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