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Des Moines, IA vs Seattle, WA weather comparison

Des Moines

IA

Des Moines picks up around 29 more inches of snow each winter.

Seattle has around 103 fewer freezing nights a year. Des Moines enjoys about 56 more sunny days a year than Seattle.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Des Moines, IA and Seattle, WA
Des MoinesMetricSeattle
203 daysSunny daysclear or partly cloudy skies147 days
37 inPrecipitationper year37 in
113 daysWet daysrain or snow per year157 days
35 inSnowfallper year6 in
21 daysHot daysabove 90 °F3 days
130 daysFreezing nightsat or below 32 °F28 days
70%Humidityaverage relative78%
51 °FAverage temperatureyear round54 °F

Monthly temperatures

Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.

Des MoinesSeattle

Daily highs

406080JanMarMayJulSepNovDes Moines, Jan: 31 °FDes Moines, Feb: 36 °FDes Moines, Mar: 49 °FDes Moines, Apr: 62 °FDes Moines, May: 72 °FDes Moines, Jun: 82 °FDes Moines, Jul: 85 °FDes Moines, Aug: 84 °FDes Moines, Sep: 77 °FDes Moines, Oct: 63 °FDes Moines, Nov: 48 °FDes Moines, Dec: 36 °FSeattle, Jan: 48 °FSeattle, Feb: 50 °FSeattle, Mar: 55 °FSeattle, Apr: 59 °FSeattle, May: 66 °FSeattle, Jun: 71 °FSeattle, Jul: 77 °FSeattle, Aug: 77 °FSeattle, Sep: 72 °FSeattle, Oct: 61 °FSeattle, Nov: 53 °FSeattle, Dec: 47 °F

Daily lows

204060JanMarMayJulSepNovDes Moines, Jan: 14 °FDes Moines, Feb: 18 °FDes Moines, Mar: 29 °FDes Moines, Apr: 40 °FDes Moines, May: 52 °FDes Moines, Jun: 62 °FDes Moines, Jul: 66 °FDes Moines, Aug: 64 °FDes Moines, Sep: 55 °FDes Moines, Oct: 43 °FDes Moines, Nov: 30 °FDes Moines, Dec: 19 °FSeattle, Jan: 37 °FSeattle, Feb: 37 °FSeattle, Mar: 39 °FSeattle, Apr: 43 °FSeattle, May: 49 °FSeattle, Jun: 53 °FSeattle, Jul: 57 °FSeattle, Aug: 58 °FSeattle, Sep: 54 °FSeattle, Oct: 47 °FSeattle, Nov: 40 °FSeattle, Dec: 37 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Des Moines high313649627282858477634836
Seattle high485055596671777772615347
Des Moines low141829405262666455433019
Seattle low373739434953575854474037

Monthly precipitation

Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.

Des MoinesSeattle
0.02.04.0JanMarMayJulSepNovDes Moines, Jan: 1.2 inDes Moines, Feb: 1.6 inDes Moines, Mar: 2.6 inDes Moines, Apr: 4.2 inDes Moines, May: 5.3 inDes Moines, Jun: 4.9 inDes Moines, Jul: 3.6 inDes Moines, Aug: 3.7 inDes Moines, Sep: 3.5 inDes Moines, Oct: 2.8 inDes Moines, Nov: 2.1 inDes Moines, Dec: 1.6 inSeattle, Jan: 4.9 inSeattle, Feb: 3.4 inSeattle, Mar: 3.9 inSeattle, Apr: 3.2 inSeattle, May: 2.1 inSeattle, Jun: 1.7 inSeattle, Jul: 0.7 inSeattle, Aug: 0.9 inSeattle, Sep: 1.9 inSeattle, Oct: 3.7 inSeattle, Nov: 5.4 inSeattle, Dec: 5.0 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Des Moines1.21.62.64.25.34.93.63.73.52.82.11.6
Seattle4.93.43.93.22.11.70.70.91.93.75.45.0

Monthly sunny days

Days each month with clear or partly cloudy skies, so compare the same month between cities.

Des MoinesSeattle
01020JanMarMayJulSepNovDes Moines, Jan: 14 daysDes Moines, Feb: 13 daysDes Moines, Mar: 16 daysDes Moines, Apr: 15 daysDes Moines, May: 16 daysDes Moines, Jun: 17 daysDes Moines, Jul: 21 daysDes Moines, Aug: 21 daysDes Moines, Sep: 22 daysDes Moines, Oct: 19 daysDes Moines, Nov: 16 daysDes Moines, Dec: 14 daysSeattle, Jan: 7 daysSeattle, Feb: 10 daysSeattle, Mar: 9 daysSeattle, Apr: 10 daysSeattle, May: 12 daysSeattle, Jun: 13 daysSeattle, Jul: 20 daysSeattle, Aug: 21 daysSeattle, Sep: 18 daysSeattle, Oct: 12 daysSeattle, Nov: 8 daysSeattle, Dec: 7 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Des Moines141316151617212122191614
Seattle71091012132021181287

Keep comparing

Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.

About this data

Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).