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Derby, Iowa Climate Averages

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Derby Monthly Climate Averages

January
February
March
April
May
June
July
August
September
October
November
December
Hi 28°F Lo 16°F Hi 32°F Lo 18°F Hi 48°F Lo 34°F Hi 59°F Lo 42°F Hi 69°F Lo 53°F Hi 79°F Lo 63°F Hi 83°F Lo 66°F Hi 82°F Lo 63°F Hi 76°F Lo 57°F Hi 62°F Lo 45°F Hi 48°F Lo 34°F Hi 36°F Lo 24°F
11 mph 11 mph 11 mph 11 mph 9 mph 8 mph 7 mph 7 mph 9 mph 10 mph 11 mph 10 mph
1.8 in 2.3 in 4.4 in 5.1 in 7.1 in 7.4 in 5.3 in 5.8 in 5 in 3.8 in 3 in 2.2 in
82% 81% 75% 74% 81% 82% 81% 78% 75% 71% 72% 76%
53% 50% 50% 45% 43% 32% 28% 28% 28% 36% 36% 46%
30.2 in 30.2 in 30.1 in 29.9 in 29.9 in 29.9 in 30.0 in 30.0 in 30.0 in 30.0 in 30.1 in 30.1 in
15 14 19 21 22 21 24 24 24 25 24 19
4 3 7 7 9 9 7 7 6 5 4 4
12 11 6 2 0 0 0 0 0 1 3 8
4 3 2 1 3 5 5 6 4 2 1 2
1 2 3 4 5 6 6 5 4 3 2 1
223 212 249 253 271 311 337 329 315 287 277 253
January
February
March
April
May
June
July
August
September
October
November
December
Hi -2°C Lo -9°C Hi -0°C Lo -8°C Hi 9°C Lo 1°C Hi 15°C Lo 6°C Hi 21°C Lo 12°C Hi 26°C Lo 17°C Hi 28°C Lo 19°C Hi 28°C Lo 17°C Hi 25°C Lo 14°C Hi 16°C Lo 7°C Hi 9°C Lo 1°C Hi 2°C Lo -4°C
17 km/h 17 km/h 18 km/h 17 km/h 15 km/h 13 km/h 12 km/h 12 km/h 14 km/h 16 km/h 17 km/h 17 km/h
46 mm 57 mm 111 mm 129 mm 181 mm 189 mm 135 mm 148 mm 126 mm 95 mm 76 mm 56 mm
82% 81% 75% 74% 81% 82% 81% 78% 75% 71% 72% 76%
53% 50% 50% 45% 43% 32% 28% 28% 28% 36% 36% 46%
1021 mb 1021 mb 1018 mb 1013 mb 1014 mb 1012 mb 1014 mb 1014 mb 1016 mb 1016 mb 1019 mb 1019 mb
15 14 19 21 22 21 24 24 24 25 24 19
4 3 7 7 9 9 7 7 6 5 4 4
12 11 6 2 0 0 0 0 0 1 3 8
4 3 2 1 3 5 5 6 4 2 1 2
1 2 3 4 5 6 6 5 4 3 2 1
223 212 249 253 271 311 337 329 315 287 277 253
Month
Avg. Temperatures
Avg. Wind Speed
Avg. Precipitation
Average Humidity
Avg. Cloud Cover
Pressure Average
Average Dry Days
Avg. Precip. Days
Avg. Snow Days
Average Fog Days
Average UV Index
Avg. Hours of Sun
Averages are based on historical weather data from the past 10 years.

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