Click on button above to view IA Watches/Warnings/Special Wx Statements.

Story County, IA Weather and Climate Synopsis

To access other UK Agricultural Weather Center Pages use the pull-down menu below.

(Click image to zoom) or Click Here

36 Hr. Forecast Map
All Radar images NOAA/UKAWC
Satellite images from NOAA

Weather Summary Hourly Observations Nowcast Precision Ag., Lawn & Garden Guidance
7 Day Forecast Medium & Long Range Outlook Almanac Historical Facts

US Weekly Rainfall Departure

US Weekly Temperature Departure
Also see:

A joint service of the UK Ag Weather Center and the National Weather Service.

Weather Summary for Iowa
National Weather Service Des Moines IA
505 AM CDT Mon Jul 16 2018

Skies were partly to mostly cloudy across much of the state overnight.
winds were out of the north to northwest at around 5 to 10 mph. Early
morning temperatures range from the mid 60s in northwest Iowa to the
mid 70s in southeast Iowa.

A cold front will continue to move through the state today with an
area of high pressure building in late today into tonight. The area of
high pressure will start to slide off to the southeast Tuesday with
a weak upper level system skirting the southwestern portion of the
state. This will allow for a small chance for some showers and
thunderstorms in the far west central to southwest late Tuesday.
Otherwise a larger upper level wave will move across the region
Wednesday into Wednesday night. This system will bring chances of
precipitation to much of Iowa late Wednesday into Thursday. A
secondary system will dig southeastward through the region to end the
week allowing for precipitation chances to continue. A cooler and
drier air mass will be in place through the week with seasonal to
slightly cooler than seasonal temperatures expected. 

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

Precision Agriculture Weather Forecast For STORY County

For Your Farm PointAgCast...Click here.

Regional Hourly Observations For STORY County
Issued at 700 AM CDT MON JUL 16 2018

AMES           CLOUDY    69  65  86 MISG      30.04R                  
6HR MIN TEMP:  68; 6HR MAX TEMP:  76;                                

ANKENY *       CLOUDY    70  68  94 N6        30.04R                  
BOONE *        MOSUNNY   68  64  88 N10       30.05R                  
CHARITON *     CLOUDY    72  70  94 N6        30.02R                  
DES MOINES     CLOUDY    72  69  90 N10       30.02R                  
6HR MIN TEMP:  72; 6HR MAX TEMP:  78;                                

GRINNELL*      CLOUDY    71  69  94 NW9       30.03R                  
KNOXVILLE *    CLOUDY    73  72  94 N10       30.00R                  
MARSHALLTOWN   CLOUDY    70  70 100 NW8       30.02R                  
6HR MIN TEMP:  69; 6HR MAX TEMP:  74;                                

NEWTON *       CLOUDY    72  70  94 N9        30.02R                  
PELLA *        CLOUDY    72  69  92 N6        30.02R                  
PERRY *        CLOUDY    69  69  99 MISG      30.06R                  

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

Current Agricultural Weather Conditions in Iowa
Based on observations at 600am CDT, Monday July 16, 2018

Across Iowa...temperatures are near 64 degrees west, near 73 degrees central, and near 69 degrees east. Current sky conditions are clear west, cloudy central, and light rain east. In the west, relative humidity is near 87%, and the dew point is near 60 degrees. In the central part of the state, relative humidity is near 93%, and the dew point is near 71 degrees. In the east, relative humidity is near 90%, and the dew point is near 66 degrees. The livestock heat stress category is no stress west, no stress central, and no stress east. Winds are from the north at 5 mph west, where conditions are favorable for spraying. Winds are from the north at 7 mph central, where conditions are favorable for spraying. Winds are from the southwest at 8 mph east, where conditions are not favorable for spraying due to light rain. Based on current available observations, the highest temperature is 73 degrees at Iowa City and Des Moines. The lowest temperature is 60 degrees at Estherville.

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 STORY County,IA

407 AM CDT Mon Jul 16 2018

 DAY ONE  Today and tonight

No hazardous weather is expected at this time.

 DAYS TWO THROUGH SEVEN  Tuesday through Sunday

Thunderstorm chances return to the state Wednesday through
Thursday. There is a marginal risk of severe storms mainly across
the west on Wednesday with large hail and damaging wind the main
threat. A few strong to severe storms are also possible Thursday
though is too early to assess the severe threat Thursday. Heavy 
rainfall is also possible. 

Additional thunderstorm chances exist toward the end of the
week and again Sunday.


Spotter activation is not anticipated.

NWS Severe Weather Map , Convective Outlook

7-Day Forecast For STORY County, IA
635 AM CDT Mon Jul 16 2018

Mostly cloudy through mid morning then clearing. High in the lower 80s. North wind 5 to 10 mph.

Mostly clear. Low in the lower 60s. North wind near 10 mph.

Mostly sunny. High in the lower 80s. North wind near 5 mph.

Partly cloudy. Low in the mid 60s. East wind around 5 mph.

Partly sunny. A 20 percent chance of thunderstorms in the afternoon. High in the lower 80s. Southeast wind 5 to 10 mph.

Cloudy. Showers likely and a chance of thunderstorms through midnight, then thunderstorms likely after midnight. Low in the mid 60s. Chance of precipitation 60 percent.

Mostly cloudy with a 50 percent chance of thunderstorms. High around 80.

Mostly cloudy. Low in the mid 60s.

Partly sunny. A 20 percent chance of thunderstorms in the afternoon. High around 80.

Mostly cloudy. Low in the lower 60s.

Mostly sunny. High around 80.

Partly cloudy. Low in the lower 60s.

Mostly sunny. High in the lower 80s.

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
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                   JUL 21-25    JUL 23-29    JUL       JUL-SEP                      
                 -----------  -----------  --------  ---------
   Temperature:      Below        Below      Above     Normal                      
 Precipitation:      Below       Normal     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

Monday July 16, 2018 the 197th Day of Year

Declination 21.190000
Distance 0.999716 AU
Rise 06:53 EDT Set 21:47 EDT
Transit Meridian 14:20 EDT
Civil Twilight Begins 06:21 EDT Ends 22:19 EDT

Calculations made for central point in the state.
Time in ET -- and will vary due to location and
elevation -- Priddy

Historical Weather And Climate Facts For Today

A severe hailstorm over parts of Antelope and Boone counties in Nebraska
stripped trees of bark and foliage, ruined roofs, and broke nearly every
window facing north. (The Weather Channel)
The temperature at Medford OR soared to an all-time high of 115 degrees to
begin a two week heat wave. During that Oregon heat wave the mercury hit
100 degrees at Sexton Summit for the only time in forty years of records.
(David Ludlum) (The Weather Channel)
An early afternoon thunderstorm raked the east side of Tucson AZ with gale
force winds, heavy rain, and numerous lightning strikes. A thirteen year
old boy was swept through a forty foot long culvert by raging waters before
being rescued. (The Weather Channel)
An intense thunderstorm dropped as much as 7 inches of rain in a three hour 
period over portions of southeastern pike county. two residents lost their lives 
as the car they were in was washed off the road. a young boy also died while 
being evacuated from his home. forty businesses and 2560 homes were 
affected...amounting to 7 million dollars in damage. (NWS JKL)
Showers and thundestorms in the southwestern U.S. ended a record string of
thirty-nine consecutive days of 100 degree heat at Tucson AZ. A
thunderstorm at Bullhead City AZ produced wind gusts to 70 mph reducing the
visibility to near zero in blowing dust. Southerly winds gusting to 40 mph
pushed temperature readings above 100 degrees in the Northern Plains. Rapid
City SD reported a record high of 106 degrees, following a record low of 39
degrees just three days earlier. (The National Weather Summary) (Storm
Thirty-seven cities in the eastern U.S. reported record high temperatures
for the date. Highs of 96 degrees at Bluefield WV and 104 degrees at
Charleston WV were all-time records, and afternoon highs of 98 degrees at
Binghamton NY, 99 degrees at Elkins WV, and 103 degrees at Pittsburgh PA,
tied all-time records. Highs of 104 degrees at Baltimore MD and 105
degrees at Parkersburg WV were records for July, and Beckley WV equalled
their record for July with a high of 94 degrees. Martinsburg WV was the hot
spot in the nation with a reading of 107 degrees. Afternoon and evening
thunderstorms raked the northeastern U.S. with large hail and damaging
winds. (The National Weather Summary)
Showers and thunderstorms developing along a stationary front drenched the
Middle Atlantic Coast States with heavy rain, causing flooding in some
areas. More than five inches of rain was reported near Madison VA and
Ferncliff VA. Hot weather prevailed in Texas. San Angelo reported a record
high of 106 degrees. (The National Weather Summary)

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