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Des Moines, Iowa Climate & Temperature

  • Des Moines, Iowa, Usa is at 4131'N, 9339'W, 294 m (965 ft). See map.
  • Des Moines, Iowa has a humid continental climate with severe winters, no dry season, hot summers and strong seasonality (Kppen-Geiger classification: Dfa).
  • According to the Holdridge life zones system of bioclimatic classification Des Moines, Iowa is situated in or near the cool temperate moist forest biome.
  • The annual average temperature is 9.9 degrees Celsius (49.8 degrees Fahrenheit). See the temperatures page for a monthly breakdown and the fixed scale graph.
  • Average monthly temperatures vary by 31.8 °C (57.2°F). This indicates that the continentality type is continental, subtype truly continental. Des Moines, Iowa Climate Graph
  • In the winter time records indicate temperatures by day reach -0.3°C (31.4°F) on average falling to -9.9°C (14.2°F) overnight.
  • In spring time temperatures climb reaching 15.9°C (60.6°F) generally in the afternoon with overnight lows of 4.3°C (39.7°F).
  • During summer average high temperatures are 29.1°C (84.4°F) and average low temperatures are 17.7°C (63.8°F).
  • Come autumn/ fall temperatures decrease achieving average highs of 17°C (62.6°F) during the day and lows of 5.7°C (42.3°F) generally shortly after sunrise.
  • Total annual Precipitation averages 841.3 mm (33.1 inches) which is equivalent to 841.3 Litres/m (20.64 Gallons/ft).
  • On average there are 2755 hours of sunshine per year. Visit the sunshine and daylight section to check monthly details including how high in the sky the sun reaches each month.
  • Were you to burrow down through the centre of the Earth from Des Moines, Iowa you would pop up nearest to the climate station at Amsterdam Island, French Southern Lands where you would find a Marine west coast climate.

Des Moines, Iowa Climate Table

  Climate Variable Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
 
Average Max Temperature °C ( °F) -2 (28) 1 (34) 8 (47) 17 (62) 23 (73) 28 (82) 30 (87) 29 (84) 24 (76) 18 (64) 9 (48) 0 (33) 15 (60)
 
Average Temperature °C ( °F) -7 (19) -4 (25) 3 (37) 11 (51) 17 (62) 22 (72) 25 (77) 23 (74) 18 (65) 12 (53) 4 (39) -4 (24) 10 (50)
 
Average Min Temperature °C ( °F) -12 (11) -9 (16) -2 (28) 4 (40) 11 (51) 16 (61) 19 (67) 18 (64) 13 (55) 6 (43) -1 (30) -9 (16) 4 (40)
 
Average Precipitation mm (in) 24 (1) 28 (1) 59 (2) 85 (3) 93 (4) 113 (4) 96 (4) 107 (4) 90 (4) 67 (3) 46 (2) 34 (1) 841 (33)
Number of Wet Days (probability of rain on a day %) 8 (26) 7 (25) 10 (32) 10 (33) 11 (35) 11 (37) 8 (26) 9 (29) 8 (27) 7 (23) 6 (20) 7 (23) 102 (28)
Average Sunlight Hours/ Day 4h 32' 5h 50' 6h 21' 7h 52' 8h 38' 10h 16' 10h 30' 9h 38' 8h 58' 7h 34' 5h 46' 4h 27' 7h 32'
Average Daylight Hours/ Day 9h 32' 10h 32' 11h 52' 13h 18' 14h 30' 15h 07' 14h 51' 13h 48' 12h 25' 11h 00' 9h 48' 9h 13' 12h 00'
Percentage of Sunny (Cloudy) Daylight Hours 49 (51) 56 (44) 54 (46) 60 (40) 60 (40) 69 (31) 72 (28) 71 (29) 73 (27) 70 (30) 60 (40) 49 (51) 63 (37)
Sun altitude at solar noon on the 21st day (). 28.6 38 48.9 60.5 68.7 71.9 68.8 60.4 49 37.5 28.4 25.1 48.8

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