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Grundy 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 GRUNDY County


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Regional Hourly Observations For GRUNDY County
Issued at 700 AM CDT SUN APR 19 2026

   NORTHEAST IOWA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CEDAR RAPIDS   CLOUDY    33  25  72 W7        30.11R WCI  27 TC   1   
6HR MIN TEMP:  32; 6HR MAX TEMP:  36;                                

CHARLES CITY * CLOUDY    36  32  87 W9G15     30.07S WCI  29 TC   2   
CLINTON *      CLOUDY    33  25  72 W6        30.12S WCI  28 TC   1   
DECORAH *      MOCLDY    36  28  75 VRB3      30.06R TC   2           
DUBUQUE        CLOUDY    34  24  67 NW7       30.09R WCI  28 TC   1   
6HR MIN TEMP:  29; 6HR MAX TEMP:  34;                                

MONTICELLO *   CLOUDY    36  25  64 W6        30.10R WCI  31 TC   2   
OELWEIN *      MOCLDY    36  25  64 W3        30.09F TC   2           
WATERLOO       CLOUDY    38  22  52 SW3       30.10S TC   3           
6HR MIN TEMP:  32; 6HR MAX TEMP:  38;                                

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


Current Agricultural Weather Conditions in Iowa
Based on observations at 700am CDT, Sunday April 19, 2026

Across Iowa...temperatures are near 41 degrees west, near 41 degrees central, and near 35 degrees east. Current sky conditions are cloudy west, mostly cloudy central, and clear east. In the west, relative humidity is near 48%, and the dew point is near 23 degrees. In the central part of the state, relative humidity is near 51%, and the dew point is near 24 degrees. In the east, relative humidity is near 66%, and the dew point is near 25 degrees. Winds are from the west at 10 mph west, where conditions are favorable for spraying. Winds are from the west at 9 mph central, where conditions are favorable for spraying. Winds are from the west at 7 mph east, where conditions are favorable for spraying. The wind chill is near 29 degrees east. Based on current available observations, the highest temperature is 42 degrees at Pella. The lowest temperature is 33 degrees at and Iowa City.


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 GRUNDY County,IA

612 AM CDT Sun Apr 19 2026

 DAY ONE  Today and tonight

A Freeze Warning and Frost Advisory are in effect for parts of the
area. Please refer to the National Weather Service website at 
weather.gov/desmoines for further details.

Freezing temperatures are expected tonight across northern Iowa.

 DAYS TWO THROUGH SEVEN  Monday through Saturday

Thunderstorm chances return Thursday. There is a Slight Risk for
severe weather for the southern half of the area. Details will be
better defined in the coming days.

 SPOTTER INFORMATION STATEMENT  

Spotter activation will not be needed at this time.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For GRUNDY County, IA
548 AM CDT Sun Apr 19 2026


FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CDT MONDAY

TODAY
Partly sunny this morning, then clearing. Highs around 50. Northwest winds 10 to 15 mph with gusts up to 25 mph.

TONIGHT
Clear. Lows in the upper 20s. North winds 5 to 10 mph, becoming east after midnight.

MONDAY
Widespread frost in the morning. Sunny. Highs around 60. Southeast winds 5 to 10 mph, becoming south around 15 mph with gusts up to 25 mph in the afternoon.

MONDAY NIGHT
Partly cloudy. Not as cool with lows in the upper 40s. South winds 10 to 15 mph with gusts up to 25 mph.

TUESDAY
Sunny. Not as cool with highs in the upper 70s. Southwest winds 5 to 10 mph, becoming northwest in the afternoon.

TUESDAY NIGHT
Clear. Lows in the upper 40s.

WEDNESDAY
Sunny. Highs around 80.

WEDNESDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s.

THURSDAY
Partly sunny with a slight chance of showers and thunderstorms in the morning, then mostly cloudy with a chance of showers and thunderstorms in the afternoon. Breezy with highs in the mid 70s. Chance of rain 50 percent.

THURSDAY NIGHT
Showers likely with a chance of thunderstorms in the evening, then a chance of showers after midnight. Breezy with lows in the upper 40s. Chance of rain 70 percent.

FRIDAY
Partly sunny with a 50 percent chance of showers. Highs in the lower 60s.

FRIDAY NIGHT
Partly cloudy with a 20 percent chance of showers. Lows in the upper 30s.

SATURDAY
Mostly sunny. Highs around 60.

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 
                   APR 24-28 APR 26-MAY 2    JUN       JUN-AUG                      
                 -----------  -----------  --------  ---------
   Temperature:      Below        Below                                            
 Precipitation:      Above       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

APRIL 19TH
HISTORIC WEATHER EVENTS
...1775...
The first engagement of the Revolutionary War took place under clear crisp
weather at Lexington-Concord. (Sandra and TI Richard Sanders - 1987)
...1941...
The temperature at Sodus NY soared to 95 degrees. The next day Albany NY
reported a record for April of 93 degrees. (The Weather Channel)
...1973...
Glenrock WY received 41 inches of snow in just 24 hours, and a storm total
of 58 inches, to establish two state records. (18th-20th) (David Ludlum)
(The Weather Channel)
...1976...
The northeastern U.S. was in the midst of an early season heat wave, and
the Boston Marathon took place in 90 degree heat. At Providence RI the
mercury hit 98 degrees. (David Ludlum)


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