Currently: 68 °F. Passing clouds. (Weather station: Indianapolis International Airport, USA). See more current weatherAnnual Weather Averages in Greencastle
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Greencastle
High Temp: 85 °F
Low Temp: 21 °F
Mean Temp: 54 °F
Precipitation: 3.69"
Humidity: 70%
Dew Point: 43 °F
Wind: 15 mph
Pressure: 30.05 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Greencastle
High Temp: 36 °F
Low Temp: 21 °F
Mean Temp: 29 °F
Precipitation: 3.14"
Humidity: 77%
Dew Point: 22 °F
Wind: 18 mph
Pressure: 30.13 "Hg
Visibility: 8 mi
February Climate & Weather Averages in Greencastle
High Temp: 41 °F
Low Temp: 24 °F
Mean Temp: 33 °F
Precipitation: 2.49"
Humidity: 72%
Dew Point: 24 °F
Wind: 18 mph
Pressure: 30.11 "Hg
Visibility: 8 mi
March Climate & Weather Averages in Greencastle
High Temp: 52 °F
Low Temp: 33 °F
Mean Temp: 42 °F
Precipitation: 3.60"
Humidity: 66%
Dew Point: 31 °F
Wind: 18 mph
Pressure: 30.08 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Greencastle
High Temp: 64 °F
Low Temp: 43 °F
Mean Temp: 53 °F
Precipitation: 4.34"
Humidity: 63%
Dew Point: 40 °F
Wind: 18 mph
Pressure: 29.98 "Hg
Visibility: 9 mi
May Climate & Weather Averages in Greencastle
High Temp: 74 °F
Low Temp: 54 °F
Mean Temp: 64 °F
Precipitation: 4.73"
Humidity: 67%
Dew Point: 52 °F
Wind: 15 mph
Pressure: 29.99 "Hg
Visibility: 9 mi
June Climate & Weather Averages in Greencastle
High Temp: 82 °F
Low Temp: 63 °F
Mean Temp: 73 °F
Precipitation: 5.19"
Humidity: 68%
Dew Point: 61 °F
Wind: 13 mph
Pressure: 29.96 "Hg
Visibility: 9 mi
July Climate & Weather Averages in Greencastle
High Temp: 85 °F
Low Temp: 67 °F
Mean Temp: 76 °F
Precipitation: 4.59"
Humidity: 70%
Dew Point: 65 °F
Wind: 12 mph
Pressure: 29.99 "Hg
Visibility: 9 mi
August Climate & Weather Averages in Greencastle
High Temp: 85 °F
Low Temp: 65 °F
Mean Temp: 75 °F
Precipitation: 3.15"
Humidity: 69%
Dew Point: 64 °F
Wind: 11 mph
Pressure: 30.01 "Hg
Visibility: 9 mi
September Climate & Weather Averages in Greencastle
High Temp: 78 °F
Low Temp: 58 °F
Mean Temp: 68 °F
Precipitation: 3.30"
Humidity: 67%
Dew Point: 56 °F
Wind: 12 mph
Pressure: 30.04 "Hg
Visibility: 9 mi
October Climate & Weather Averages in Greencastle
High Temp: 66 °F
Low Temp: 46 °F
Mean Temp: 56 °F
Precipitation: 3.31"
Humidity: 68%
Dew Point: 45 °F
Wind: 15 mph
Pressure: 30.07 "Hg
Visibility: 10 mi
November Climate & Weather Averages in Greencastle
High Temp: 52 °F
Low Temp: 35 °F
Mean Temp: 43 °F
Precipitation: 3.39"
Humidity: 71%
Dew Point: 34 °F
Wind: 17 mph
Pressure: 30.12 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Greencastle
High Temp: 41 °F
Low Temp: 26 °F
Mean Temp: 34 °F
Precipitation: 3.03"
Humidity: 77%
Dew Point: 27 °F
Wind: 17 mph
Pressure: 30.12 "Hg
Visibility: 8 mi