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Madison County, IA Weather and Climate Synopsis

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Weather Summary for Iowa
National Weather Service Des Moines IA
346 AM CST Tue Dec 31 2024

Today: 

Low pressure moving from Missouri into Central Illinois overnight
produced a broad area of light rain and snow across central and
southern Iowa early this morning. There were spotty areas of snow
accumulations with a few areas receiving around an inch or so.
Most primary roads and highways remained wet although less traveled
roads did become slushy in areas. Otherwise, northwest winds increased
and were common from 10 to 20 mph with gusts to almost 30 mph at 
times. 

The light precipitation is expected to come to an end this morning as
the system pulls away from the state. Some minor snow accumulations,
generally less than an inch remain possible in far south central to
southeast Iowa through mid morning, otherwise the north winds persist
for much of the day as cooler air arrives. Additional flurries are
expected late this afternoon into the evening as another weak system
passes through the state. 

Tonight and beyond: 

Any flurries are forecast to end tonight with clearing expected toward
daybreak on New Years Day. Mostly sunny skies will greet the New Year
with near normal temperatures in the mid 20s to lower 30s. However,
a clipper system approaches the state on Thursday with light snow
overspreading much of central into southern Iowa. Minor accumulations
are forecast by Thursday evening along with the arrival of cooler air.
Highs by Friday are forecast to remain in the teens to lower 20s over
much of the state as cold polar air overspread the Midwest. 

National Ag. Weather Outlook, International Ag. Weather Summary
Current Surface Map, [2nd Source TWC]

Precision Agriculture Weather Forecast For MADISON County


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Regional Hourly Observations For MADISON County
Issued at 1100 AM CDT SAT AUG 15 2026

   CENTRAL IOWA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
AMES           CLOUDY    77  73  87 SE6       30.01R TC  25           
ANKENY *       CLOUDY    77  77 100 CALM      30.01S TC  25           
BOONE *        CLOUDY    75  75 100 SE5       30.01R TC  24           
CHARITON *     CLOUDY   N/A N/A N/A SE3       30.01S                  
DES MOINES     CLOUDY    78  75  90 NE5       30.01S HX  81  TC  26   
KNOXVILLE *    CLOUDY    79  77  94 SE7       30.01S HX  83  TC  26   
MARSHALLTOWN   CLOUDY    78  74  87 E5        30.01F HX  81  TC  26   
PELLA *        CLOUDY    79  76  91 CALM      30.02S HX  83  TC  26   
PERRY *        CLOUDY    76  76 100 CALM      29.99F TC  25           

Current Temperatures, Dewpoint, RH, Wind, Regional Obs, Surface 4-Panel


Current Agricultural Weather Conditions in Iowa
Based on observations at 1100am CDT, Saturday August 15, 2026

Across Iowa...temperatures are near 76 degrees west, near 78 degrees central, and near 77 degrees east. Current sky conditions are cloudy west, cloudy central, and cloudy east. In the west, relative humidity is near 93%, and the dew point is near 74 degrees. In the central part of the state, relative humidity is near 90%, and the dew point is near 75 degrees. The heat index is near 81 degrees central. In the east, relative humidity is near 87%, and the dew point is near 73 degrees. The livestock heat stress category is no stress west, no stress central, and no stress east. There is patchy fog west. Winds are from the west at 7 mph west, where conditions are favorable for spraying. Winds are from the northeast at 5 mph central, where conditions are favorable for spraying. Winds are from the southwest at 7 mph east, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 79 degrees at Pella. The lowest temperature is 72 degrees at Dubuque.


Current NOWCAST not available:
Nowcasts are not issued routinely during fair weather. Only when
precipitation or other significant weather is occuring in this county will these
forecasts be issued. Currently, there is no short term forecast in effect.

US Radar, All NWS Radars (In near-real time), Current Livestock Heat Stress Index (LSI), Current Wind Chill Map
Hazardous Weather Outlook For MADISON County,IA

1036 AM CDT Sat Aug 15 2026

 DAY ONE  Today and tonight

Scattered thunderstorms are expected later today into tonight. A
few strong to severe storms will be possible, mainly across the
southern half of Iowa, with isolated damaging wind gusts being the
primary threat along with locally heavy rain.

 DAYS TWO THROUGH SEVEN  Sunday through Friday

A slight chance of thunderstorms is forecast across southern Iowa
on Sunday. Severe weather is unlikely. More widespread
thunderstorm chances then return from Monday night into Wednesday.
Any severe weather threats during that time will be determined in
the coming days.

 SPOTTER INFORMATION STATEMENT  

Severe weather and rainfall reports are appreciated.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For MADISON County, IA
1132 AM CDT Sat Aug 15 2026

REST OF TODAY
Mostly cloudy. A chance of showers and thunderstorms this afternoon. Near steady temperature around 80. Northwest winds around 5 mph. Chance of rain 30 percent.

TONIGHT
Mostly cloudy with a chance of thunderstorms. Showers likely, mainly in the evening. Humid with lows in the upper 60s. Northwest winds around 5 mph. Chance of rain 70 percent.

SUNDAY
Mostly sunny. Humid with highs around 80. North winds 5 to 10 mph.

SUNDAY NIGHT
Mostly clear. Humid with lows in the lower 60s. North winds 5 to 10 mph.

MONDAY
Sunny with highs in the lower 80s. Light and variable winds, becoming west around 5 mph in the afternoon.

MONDAY NIGHT
Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 20 percent.

TUESDAY
Partly sunny with a slight chance of thunderstorms. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the mid 80s. Chance of rain 40 percent.

TUESDAY NIGHT
A chance of thunderstorms. Showers, mainly in the evening. Locally heavy rainfall possible in the evening. Lows in the mid 60s. Chance of rain 80 percent.

WEDNESDAY
Mostly cloudy with a slight chance of showers and thunderstorms in the morning, then mostly sunny in the afternoon. Highs in the upper 70s. Chance of rain 20 percent.

WEDNESDAY NIGHT
Partly cloudy. A slight chance of showers after midnight. Lows around 60. Chance of rain 20 percent.

THURSDAY
Mostly sunny. Highs in the mid 70s.

THURSDAY NIGHT
Partly cloudy. A slight chance of showers after midnight. Lows around 60. Chance of rain 20 percent.

FRIDAY
Mostly sunny. A slight chance of showers in the morning. Highs in the upper 70s. Chance of rain 20 percent.

12-48 Hr Surface Forecast Maps, TWC 4-Panel Surface Forecast, Fire Danger, Day 1 Precip, Day 2 Precip, Days 1-5 Precip, Severe Weather Pot.-Day 1, Day 2


Medium & Long Range Outlook For Iowa
                                 IOWA                                                                     
                 ---------------------------------------------
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                   AUG 20-24    AUG 22-28    JUN       JUN-AUG                      
                 -----------  -----------  --------  ---------
   Temperature:      Above        Above                                            
 Precipitation:     Normal       Normal                                            

....  Medium and long range outlooks provided by NCEP/K. Thomas Priddy
5 Day Rainfall Forecast, 6 to 10 Day , 8 to 14 Day , Text, 30-Day Outook, 90-Day Outook, 120-Day Outlook
Almanac Information


Historical Weather And Climate Facts For Today

///////////////////////////
AUGUST 15TH...HISTORIC WEATHER EVENTS
...1787...
Tornadoes were reported in Connecticut, Rhode Island, Massachusetts, and
New Hampshire. Wethersfield CT was hard hit by the tornado outbreak. (David
Ludlum)
...1946...
Saint Louis MO was deluged with a record 8.78 inches of rain in 24 hours.
(The Weather Channel)
...1967...
The "sundance fire" in northern Idaho was started by lightning. Winds of 50
mph carried firebrands as much as ten miles in advance to ignite new fires,
and as a result, the forest fire spread twenty miles across the Selkirk
Mountains in just twelve hours, burning 56,000 acres. The heat of the fire
produced whirlwinds of flame with winds up to 300 mph which flung giant
trees about like matchsticks. (David Ludlum)
...1987...
Thunderstorms developing ahead of a sharp cold front produced severe
weather in the Upper Midwest during the afternoon and evening hours, with
Minnesota and eastern South Dakota hardest hit. A thunderstorm in west
central Minnesota spawned a tornado at Eagle Lake which killed one person
and injured eight others. A thunder- storm in eastern South Dakota produced
softball size hail at Warner. (The National Weather Summary) (Storm Data)
...1988...
Thirty five cities in twenty states in the north central and northeastern
U.S. reported record high temperatures for the date, including Lamoni IA
and Baltimore MD, where the mercury hit 105 degrees. Temperatures 100
degrees or above were reported in twenty-two states. Pierre SD was the hot
spot in the nation with a high of 114 degrees. Bluefield WV reported eight
straight days of record heat. (The National Weather Summary)
...1989...
Evening thunderstorms in eastern New Mexico produced wind gusts to 66 mph
at Clovis. Evening thunderstorms in West Texas produced baseball size hail
around Hereford, Dimmitt, Ware and Dalhart. (The National Weather Summary)
(Storm Data)


Ag Weather Center, Department of Biosystems & Agricultural Engineering, University of Kentucky