Weather


Des Moines, Iowa

Current Conditions

 
Temp: 68°
Dew Point: 60°
Humidity: 76%
Wind: SE 13 mph
Visibility: 10.0 miles
Pressure: 29.98 in. -
Sky: Overcast

 

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Almanac

Average High: 87°

Average Low: 68°

Record high/year: 111° (1934)

Record low/year: 52° (2003)

Sunrise: 6:01 AM

Sunset: 8:39 PM

Detailed History

Sun and Moon

Sunrise: 06:01 AM (CDT)

Moon Rise: 11:36 PM (CDT)

Sunset: 08:39 PM (CDT)

Moon Set: 12:47 PM (CDT)

Moon Phase

Today
Jul. 25
Aug. 01
Aug. 08
Aug. 16

 

Local Radar

Local Satellite


Air Pollution

Air Pollution Forecast for Des Moines

Current Air Quality: Good Pollutant: PM2.5
Current Air Quality: Good Pollutant: OZONE
Thu Air Quality: Good Pollutant: OZONE
Thu Air Quality: Good Pollutant: CO
Fri Air Quality: Good Pollutant: OZONE
Fri Air Quality: Good Pollutant: CO
Sat Air Quality: Good Pollutant: OZONE
Sat Air Quality: Good Pollutant: CO
Sun Air Quality: Good Pollutant: OZONE
Sun Air Quality: Good Pollutant: CO

Next 12 Hours

 
3  am
6  am
9  am
12  pm
3  pm
Thunderstorm T-storms
Thunderstorm T-storms
Thunderstorm T-storms
Chance of a Thunderstorm Chance of T-storms
Chance of a Thunderstorm Chance of T-storms
67°
65°
72°
76°
77°

 

Forecast data from the National Digital Forecast Database


5-Day Forecast

Thursday Thunderstorm Hi 79° Lo 68° T-storms
Friday Partly Cloudy Hi 86° Lo 65° Partly Cloudy
Saturday Partly Cloudy Hi 85° Lo 65° Partly Cloudy
Sunday Chance of a Thunderstorm Hi 83° Lo 67° Chance of T-storms
Monday Partly Cloudy Hi 85° Lo 65° Partly Cloudy

 

Forecast for Polk

Updated: 3:23 am CDT on July 24, 2008

Early This Morning

Showers and thunderstorms. Locally heavy rainfall possible. Southeast wind 5 to 15 mph. Chance of precipitation 90 percent.

 

Today

Thunderstorms likely in the morning...then a chance of thunderstorms in the afternoon. High around 80. Southeast wind 10 to 15 mph. Chance of thunderstorms 70 percent.

 

Tonight

Mostly cloudy with a 50 percent chance of thunderstorms. Low in the upper 60s. Southeast wind 5 to 10 mph.

 

Friday

Partly sunny. A chance of thunderstorms in the morning... then a slight chance of thunderstorms in the afternoon. High in the upper 80s. East wind near 10 mph. Chance of thunderstorms 50 percent.

 

Friday Night and Saturday

Partly cloudy. A 20 percent chance of thunderstorms. Low in the mid 60s. High in the mid 80s. Northeast wind near 10 mph.

 

Saturday Night

Partly cloudy with a 20 percent chance of thunderstorms. Low in the mid 60s.

 

Sunday

Partly sunny with a 30 percent chance of thunderstorms. High in the mid 80s.

 

Sunday Night and Monday

Partly cloudy. Low in the mid 60s. High in the mid 80s.

 

Monday Night through Tuesday Night

Partly cloudy with a 20 percent chance of thunderstorms. Low in the mid 60s. High in the mid 80s.

 

Wednesday

Sunny. High in the mid 80s.

 

 

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: IEM Des Moines / KCCI Studios KCCI-TV, Des Moines, IA

Updated: 3:35 AM CDT

Temperature: 68 °F Dew Point: 62 °F Humidity: 81% Wind: SSE at 2 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Historical Graphs

Location: IADOT Des Moines (I-235), Des Moines, Dry

Updated: 3:43 AM CDT

Temperature: 69 °F Dew Point: 62 °F Humidity: 78% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Historical Graphs

Location: Witmer Park, Des Moines, IA

Updated: 3:56 AM CDT

Temperature: 67.7 °F Dew Point: 62 °F Humidity: 82% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Historical Graphs

Location: Drake Neighborhood, Des Moines, IA

Updated: 3:51 AM CDT

Temperature: 67.3 °F Dew Point: 62 °F Humidity: 84% Wind: Calm Pressure: 29.94 in Hourly Precipitation: 0.00 in Historical Graphs

Location: Windsor Heights / Glendale, Des Moines, IA

Updated: 3:10 AM CDT

Temperature: 66.7 °F Dew Point: 62 °F Humidity: 85% Wind: South at 1.2 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Historical Graphs

Location: APRSWXNET Johnston IA US, Johnston, IA

Updated: 3:30 AM CDT

Temperature: 68 °F Dew Point: 57 °F Humidity: 68% Wind: ESE at 6 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Historical Graphs

Location: APRSWXNET Des Moines IA US, Des Moines, IA

Updated: 3:25 AM CDT

Temperature: 67 °F Dew Point: 18 °F Humidity: 15% Wind: ESE at 3 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Historical Graphs

Location: IEM Blank Park Zoo, DSM KCCI-TV, Des Moines, IA

Updated: 3:35 AM CDT

Temperature: 68 °F Dew Point: 65 °F Humidity: 90% Wind: ESE at 7 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Historical Graphs

Location: IEM Iowa Christian KCCI-TV, West Des Moines, IA

Updated: 3:35 AM CDT

Temperature: 69 °F Dew Point: - Humidity: - Wind: SE at 3 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Historical Graphs

Location: Wildflower, Ankeny, IA

Updated: 3:53 AM CDT

Temperature: 66.6 °F Dew Point: 61 °F Humidity: 81% Wind: ESE at 5.0 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Historical Graphs

Location: Chipmunk and Squirrel Railroad, Urbandale, IA

Updated: 3:56 AM CDT

Temperature: 67.9 °F Dew Point: 62 °F Humidity: 81% Wind: SE at 12.7 mph Pressure: 29.99 in Hourly Precipitation: 0.03 in Historical Graphs

Location: Ashua Estates, West Des Moines, IA

Updated: 3:55 AM CDT

Temperature: 66.7 °F Dew Point: 55 °F Humidity: 66% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Historical Graphs

Location: IADOT Altoona (I-80/US 65), Berwick, Dry

Updated: 3:40 AM CDT

Temperature: 66 °F Dew Point: 63 °F Humidity: 91% Wind: ESE at 6 mph Pressure: - Hourly Precipitation: 0.00 in Historical Graphs

Location: West Des Moines, IA

Updated: 3:55 AM CDT

Temperature: 67.6 °F Dew Point: -2 °F Humidity: 6% Wind: South at 5.0 mph Pressure: 28.99 in Hourly Precipitation: 0.00 in Historical Graphs

Location: IEM Jordan Creek KCCI-TV, West Des Moines, IA

Updated: 3:35 AM CDT

Temperature: 68 °F Dew Point: 68 °F Humidity: 100% Wind: SE at 6 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Historical Graphs

Location: Adventureland Estates, Altoona, IA

Updated: 3:55 AM CDT

Temperature: 65.8 °F Dew Point: 62 °F Humidity: 88% Wind: Calm Pressure: 29.00 in Hourly Precipitation: 0.00 in Historical Graphs

Location: IEM DSM Christian KCCI-TV, Des Moines, IA

Updated: 3:35 AM CDT

Temperature: 69 °F Dew Point: 63 °F Humidity: 81% Wind: SE at 5 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Historical Graphs

Location: IEM Ankeny / Christian Academy KCCI-TV, Ankeny, IA

Updated: 3:34 AM CDT

Temperature: 69 °F Dew Point: 67 °F Humidity: 93% Wind: East at 3 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Historical Graphs

Location: Saylorville, Polk City, IA

Updated: 3:51 AM CDT

Temperature: 67.6 °F Dew Point: 62 °F Humidity: 81% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Historical Graphs

Location: IADOT Des Moines (I-35), Cumming, Dry

Updated: 3:33 AM CDT

Temperature: 67 °F Dew Point: 61 °F Humidity: 82% Wind: SE at 6 mph Pressure: - Hourly Precipitation: 0.00 in Historical Graphs

Location: IEM Grimes Elementary KCCI-TV, Grimes, IA

Updated: 3:35 AM CDT

Temperature: 68 °F Dew Point: 64 °F Humidity: 87% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Historical Graphs

Location: Norwalk, IA (2mi SW), Norwalk, IA

Updated: 3:55 AM CDT

Temperature: 66.0 °F Dew Point: 60 °F Humidity: 82% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Historical Graphs

Location: Bondurant, Iowa, Bondurant, IA

Updated: 3:55 AM CDT

Temperature: 63.9 °F Dew Point: 64 °F Humidity: 100% Wind: East at 2.7 mph Pressure: 17.72 in Hourly Precipitation: 0.00 in Historical Graphs

Location: IADOT Ankeny (I-35), Elkhart, Wet

Updated: 2:04 AM CDT

Temperature: 64 °F Dew Point: 62 °F Humidity: 94% Wind: SSE at 12 mph Pressure: - Hourly Precipitation: 0.00 in Historical Graphs

Location: IEM North Polk / West Elem KCCI-TV, Polk City, IA

Updated: 3:35 AM CDT

Temperature: 69 °F Dew Point: 61 °F Humidity: 75% Wind: SE at 5 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Historical Graphs

Location: Indianola Town Square, Indianola, IA

Updated: 3:49 AM CDT

Temperature: 65.8 °F Dew Point: 62 °F Humidity: 89% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Historical Graphs

Location: Indianola, IA

Updated: 3:43 AM CDT

Temperature: 65.5 °F Dew Point: 63 °F Humidity: 90% Wind: Calm Pressure: 29.95 in Hourly Precipitation: - Historical Graphs

Location: MesoWest CRN SITE AT NATIONAL WILDLIFE RE IA US, Prairie City, IA

Updated: 2:10 AM CDT

Temperature: 64 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Historical Graphs

Location: Dallas Center Area, Dallas Center, IA

Updated: 3:56 AM CDT

Temperature: 66.2 °F Dew Point: 60 °F Humidity: 82% Wind: SW at 4.6 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Historical Graphs

Location: RAWS NEAL SMITH IA US, Prairie City, IA

Updated: 2:48 AM CDT

Temperature: 65 °F Dew Point: 63 °F Humidity: 94% Wind: SE at 8 mph Pressure: - Hourly Precipitation: 0.00 in Historical Graphs

Location: IADOT Colfax (I-80), Colfax, Other

Updated: 3:39 AM CDT

Temperature: 65 °F Dew Point: 60 °F Humidity: 83% Wind: East at 4 mph Pressure: - Hourly Precipitation: 0.00 in Historical Graphs

Location: IADOT De Soto (I-80/US 169), De Soto, Moist

Updated: 3:43 AM CDT

Temperature: 66 °F Dew Point: 65 °F Humidity: 94% Wind: SSE at 3 mph Pressure: - Hourly Precipitation: 0.00 in Historical Graphs

Location: IEM Adel / ADM MS KCCI-TV, Adel, IA

Updated: 3:35 AM CDT

Temperature: 67 °F Dew Point: 61 °F Humidity: 81% Wind: South at 2 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Historical Graphs

Location: SE side of Madrid, IA, Madrid, IA

Updated: 3:56 AM CDT

Temperature: 65.3 °F Dew Point: 63 °F Humidity: 92% Wind: ESE at 1.0 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Historical Graphs

Location: IEM Madrid KCCI-TV, Madrid, IA

Updated: 3:35 AM CDT

Temperature: 68 °F Dew Point: 62 °F Humidity: 81% Wind: NW at 1 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Historical Graphs

Location: 1/2 mile south of, St. Marys, IA

Updated: 3:55 AM CDT

Temperature: 66.7 °F Dew Point: 62 °F Humidity: 84% Wind: SE at 6.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Historical Graphs

Location: IEM Woodward KCCI-TV, Woodward, IA

Updated: 3:35 AM CDT

Temperature: 68 °F Dew Point: 64 °F Humidity: 87% Wind: West at 2 mph Pressure: 29.53 in Hourly Precipitation: 0.00 in Historical Graphs

Location: Stine Seed Co., Adel, IA

Updated: 3:56 AM CDT

Temperature: 66.8 °F Dew Point: 63 °F Humidity: 87% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Historical Graphs

MSN Maps of:

Temperature Dew Point Humidity Wind Pressure Hourly Precipitation -

NWS Forecaster Discussion




992 
fxus63 kdmx 240740 
afddmx 


Area forecast discussion 
National Weather Service Des Moines Iowa 
240 am CDT Thursday Jul 24 2008 


Short term...today 
evolution of current mesoscale convective system is obviously primary forecast concern this 
morning which lines up quite well with decent moisture convergence 
associated with 30-40kt low level jet noted on 305/310k isent sfcs. This 
convergence reaches S central/southeast sections by 12z-15z so have boosted 
probability of precipitation to categorical in those locations and diminished northern portions. 
Convection should have no problem sustaining itself and will likely 
increase somewhat. Lifting parcels from various elevated levels on 
the RUC depict steady 1500-2000 j/kg convective available potential energy with decreasing cin and 
convection being rooted lower. Effective srh and especially 
effective shear sufficient for organization as well...especially if 
storms become rooted lower as cins suggest so may see a gradual 
increase in severe threat toward daybreak. Heavy rains will be a 
concern as well with precipitable waters  around two inches...13kft wcds...and cells 
tracking over same locations. 


Airmass should stabilize somewhat during the afternoon with no real 
forcing mechanism noted so have slights/chances lingering by 
then...mainly southern portions. Sref and especially NAM raw temperatures are 
not too bullish on temperatures with NAM suggesting areas of Post-precipitation 
stratus so went at or just below guidance...lower end NE. 


Long term...tonight through Wednesday 
frontal boundary to be in place from northeast to southwest across 
the County Warning Area by this evening...with much of County Warning Area in the warm sector. Fair 
amount of instability with best surface based cape situated across the 
southwestern County Warning Area. May see some isolated storms initially with 
daytime heating...but expect majority of convection with approaching 
shortwave through into the later evening/overnight hours as low level jet 
strengthens. Moisture expected to pool ahead of approaching weak 
cool front situated across eastern NE/wc Iowa...with precipitable waters  approaching 
two inches. Main activity still expected along the frontal boundary 
through the early evening...with everything pushing eastward 
overnight. Friday into Saturday...main frontal boundary to be 
somewhat washed out...but in vicinity of the southern County Warning Area. Northwest flow 
pattern continues...with main weak disturbances dropping southeast 
out of the northern rockies into the area. Hard to nail down timing 
and placement...but instability to remain greatest across the 
southern half of the County Warning Area into Friday night and Saturday...as surface 
high pressure/drier air begins to build southeastward into northern 
Iowa. Little changes made into the extended range...as 
western/central US upper ridging flattens some. However still looks 
like trend for weak waves to traverse the ridge...and impact the 
area allowing for unsettled conditions to continue through the 
weekend into the middle of next week. 


&& 


Aviation...24/06z 
light showers continue move over central Iowa though is falling with 
VFR conditions. Thunderstorms developing west of the Missouri River 
and will move into western Iowa later tonight. Main sites affected will be 
dsm then later otm. MVFR ceilings expected for a period all sites as 
this system passes. Additional MVFR ceilings mainly north expected 
after 00z. 


&& 


Dmx watches/warnings/advisories...none. 


&& 


$$ 


Short term...bss 
long term...mja 
aviation...donavon 










































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