Annual Weather Averages in Des Moines International Airport
Des Moines International Airport is 43 miles from Derby, so the actual climate in Derby can vary a bit.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Derby
High Temp: 86 °F
Low Temp: 15 °F
Mean Temp: 51 °F
Precipitation: 2.98"
Humidity: 68%
Dew Point: 40 °F
Wind: 15 mph
Pressure: 30.03 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Derby
High Temp: 31 °F
Low Temp: 15 °F
Mean Temp: 23 °F
Precipitation: 1.01"
Humidity: 74%
Dew Point: 16 °F
Wind: 16 mph
Pressure: 30.14 "Hg
Visibility: 8 mi
February Climate & Weather Averages in Derby
High Temp: 35 °F
Low Temp: 19 °F
Mean Temp: 27 °F
Precipitation: 1.24"
Humidity: 71%
Dew Point: 19 °F
Wind: 16 mph
Pressure: 30.13 "Hg
Visibility: 8 mi
March Climate & Weather Averages in Derby
High Temp: 49 °F
Low Temp: 30 °F
Mean Temp: 40 °F
Precipitation: 2.01"
Humidity: 65%
Dew Point: 28 °F
Wind: 17 mph
Pressure: 30.09 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Derby
High Temp: 62 °F
Low Temp: 41 °F
Mean Temp: 51 °F
Precipitation: 3.80"
Humidity: 60%
Dew Point: 37 °F
Wind: 18 mph
Pressure: 29.98 "Hg
Visibility: 9 mi
May Climate & Weather Averages in Derby
High Temp: 72 °F
Low Temp: 52 °F
Mean Temp: 62 °F
Precipitation: 5.10"
Humidity: 64%
Dew Point: 49 °F
Wind: 16 mph
Pressure: 29.95 "Hg
Visibility: 9 mi
June Climate & Weather Averages in Derby
High Temp: 82 °F
Low Temp: 63 °F
Mean Temp: 73 °F
Precipitation: 5.26"
Humidity: 66%
Dew Point: 60 °F
Wind: 14 mph
Pressure: 29.90 "Hg
Visibility: 9 mi
July Climate & Weather Averages in Derby
High Temp: 86 °F
Low Temp: 67 °F
Mean Temp: 76 °F
Precipitation: 4.00"
Humidity: 69%
Dew Point: 65 °F
Wind: 12 mph
Pressure: 29.95 "Hg
Visibility: 10 mi
August Climate & Weather Averages in Derby
High Temp: 84 °F
Low Temp: 65 °F
Mean Temp: 74 °F
Precipitation: 4.12"
Humidity: 70%
Dew Point: 64 °F
Wind: 12 mph
Pressure: 29.98 "Hg
Visibility: 9 mi
September Climate & Weather Averages in Derby
High Temp: 77 °F
Low Temp: 56 °F
Mean Temp: 67 °F
Precipitation: 3.21"
Humidity: 66%
Dew Point: 55 °F
Wind: 14 mph
Pressure: 30.01 "Hg
Visibility: 10 mi
October Climate & Weather Averages in Derby
High Temp: 64 °F
Low Temp: 43 °F
Mean Temp: 54 °F
Precipitation: 2.77"
Humidity: 65%
Dew Point: 41 °F
Wind: 15 mph
Pressure: 30.04 "Hg
Visibility: 10 mi
November Climate & Weather Averages in Derby
High Temp: 49 °F
Low Temp: 31 °F
Mean Temp: 40 °F
Precipitation: 1.85"
Humidity: 68%
Dew Point: 29 °F
Wind: 17 mph
Pressure: 30.09 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Derby
High Temp: 37 °F
Low Temp: 20 °F
Mean Temp: 28 °F
Precipitation: 1.43"
Humidity: 74%
Dew Point: 21 °F
Wind: 16 mph
Pressure: 30.10 "Hg
Visibility: 8 mi