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Sac County, IA Weather and Climate Synopsis

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Weather Summary for Iowa
National Weather Service Des Moines IA
504 PM CST Wed Dec 13 2017

Windy conditions have not backed down this afternoon with much of 
Iowa seeing wind speeds greater than 20 miles per hour. Some areas 
have seen gusts upwards of 50 miles per hour. A wind advisory remains 
in effect for most of the state until 6 PM. Temperatures right now are
ranging from the lower 30s to upper 40s with wind chills anywhere 
from the mid teens to upper 30s. Heavy cloud cover will remain with us
overnight, and temperatures will drop to the upper teens to lower 
20s.

Tomorrow will be a little colder with gloomy skies sticking around
with us. High temperatures will be in the mid to upper 20s. The
weather will be quiet, but looking to Thursday night into Friday
morning there is a slight chance for snow for most of the state with
little to no accumulation expected. Temperatures will warm slightly
Friday and into the weekend to the mid 30s to upper 40s. With the
weekend comes a chance for rain and snow overnight Saturday and into
the day Sunday but above freezing temperatures will keep the snow 
from sticking around for too long. Next week will be much of the same
story with temperatures in the upper 30s to lower 40s and fairly 
quiet weather.

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

Precision Agriculture Weather Forecast For SAC County


For Your Farm PointAgCast...Click here.

Regional Hourly Observations For SAC County
Issued at 1000 PM CST WED DEC 13 2017

   NORTHWEST IOWA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARROLL *      CLOUDY    34  25  69 N21G28    29.92R WCI  22          
CHEROKEE *     MIX PCPN  32  28  85 N13G20    29.95R WCI  22          
DENISON *      CLOUDY    34  25  69 N14G21    29.95R WCI  24          
LE MARS *      CLOUDY    34  28  80 NW13      29.95R WCI  25          
ORANGE CITY *  DRIZZLE   34  30  86 N13G18    29.94R WCI  25          
SHELDON *      CLOUDY    28  27  93 N13       29.93R WCI  18          
SIOUX CITY     CLOUDY    36  28  73 N14       29.96R WCI  27          
SPENCER        CLOUDY    28  22  78 N18       29.93R WCI  15          
STORM LAKE *   CLOUDY    30  25  80 N17       29.93R WCI  18          

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


Current Agricultural Weather Conditions in Iowa
Based on observations at 1000pm CST, Wednesday December 13, 2017

Across Iowa...temperatures are near 36 degrees west, near 33 degrees central, and near 26 degrees east. Current sky conditions are cloudy west, cloudy central, and cloudy east. In the west, relative humidity is near 73%, and the dew point is near 28 degrees. In the central part of the state, relative humidity is near 61%, and the dew point is near 21 degrees. In the east, relative humidity is near 65%, and the dew point is near 16 degrees. Winds are from the north at 14 mph west, where conditions are not favorable for spraying due to strong winds. The wind chill is near 27 degrees west. Winds are from the north at 23 mph with gusts at 35 mph central, where conditions are not favorable for spraying due to strong winds. The wind chill is near 21 degrees central. Winds are from the northwest at 17 mph with gusts at 25 mph east, where conditions are not favorable for spraying due to strong winds. The wind chill is near 13 degrees east. The livestock cold stress index is in the no stress category west, no stress category central, and no stress category east. Based on current available observations, the highest temperature is 39 degrees at Clarinda. The lowest temperature is 23 degrees at Mason City and 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 SAC County,IA

615 PM CST Wed Dec 13 2017

 DAY ONE  Tonight

No hazardous weather is expected at this time.

 DAYS TWO THROUGH SEVEN  Thursday through Tuesday

No hazardous weather is expected at this time.

 SPOTTER INFORMATION STATEMENT  

Spotter activation will not be needed.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For SAC County, IA
952 PM CST Wed Dec 13 2017

REST OF TONIGHT
Mostly cloudy. Breezy. Low in the lower 20s. North wind 15 to 20 mph decreasing to 5 to 15 mph after midnight.

THURSDAY
Mostly cloudy. Colder. A chance of flurries late in the afternoon. High in the mid 30s. Northwest wind 5 to 10 mph.

THURSDAY NIGHT
Mostly cloudy then becoming partly cloudy after midnight then becoming mostly cloudy. A 20 percent chance of light snow through midnight. Low in the lower 20s. Northwest wind 5 to 10 mph.

FRIDAY
Partly sunny. High in the upper 30s. West wind 10 to 15 mph with gusts to around 25 mph.

FRIDAY NIGHT
Mostly cloudy through midnight then becoming partly cloudy. Low in the mid 20s. Southwest wind 5 to 10 mph.

SATURDAY
Partly sunny. High in the mid 40s.

SATURDAY NIGHT
Mostly cloudy. Low in the mid 20s.

SUNDAY
Partly sunny. A 20 percent chance of rain and snow in the afternoon. High in the upper 30s.

SUNDAY NIGHT
Partly cloudy. Low in the lower 20s.

MONDAY
Sunny. High in the lower 40s.

MONDAY NIGHT
Partly cloudy. Low in the mid 20s.

TUESDAY
Mostly sunny. Breezy. High in the lower 40s.

TUESDAY NIGHT
Mostly cloudy. Low in the lower 20s.

WEDNESDAY
Partly sunny. High around 40.

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 
                   DEC 19-23    DEC 21-27    DEC       DEC-FEB                      
                 -----------  -----------  --------  ---------
   Temperature:     Normal        Below     Normal      Below                      
 Precipitation:      Below        Above     Normal      Above                      

....  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

Wednesday December 13, 2017 the 347th Day of Year

---------------------------------------------------
SUN
Declination -23.210000
Distance 0.999724 AU
Rise 08:34 EST Set 17:43 EST
Transit Meridian 13:08 EST
Civil Twilight Begins 08:03 EST Ends 18:14 EST

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

DECEMBER 13TH
HISTORIC WEATHER EVENTS
...1915...
A heavy snowstorm kicked off the snowiest winter in modern records for
western New England. (The Weather Channel)
...1962...
Record cold weather gripped the nation. The low temperature in Lexington, KY 
fell to -6 degrees (record low on this date), -3 at Covington and -3 at Paducah. 
Severe cold conditions went as far south as Florida with a hard freeze. Morning 
lows reached 35 degrees at Miami, 18 degrees at Tampa, and 12 degrees at 
Jacksonville. It was the coldest December weather of the 20th century and caused 
millions of dollars damage to crops and foliage. In Georgia, the morning low of 
9 degrees below zero at Blairsville established a state record for the month of 
December. 
...1987...
A major winter storm produced high winds and heavy snow in the Southern
Rockies and the Southern High Plains. Snowfall totals in New Mexico ranged
up to 25 inches at Cedar Crest, with up to three feet of snow reported in
the higher elevations. Winds of 75 mph, with gusts to 124 mph, were
reported northeast of Albuquerque NM. El Paso TX was buried under 22.4
inches of snow, including a single storm record of 16.8 inches in 24 hours.
The snowfall total surpassed their previous record for an entire winter
season of 18.4 inches. Record cold was experienced the next three nights as
readings dipped into the single numbers. High winds ushering unseasonably
cold air into the southwestern U.S. gusted to 100 mph at Grapevine CA. (The
National Weather Summary) (Storm Data)
...1988...
Low pressure off the Atlantic coast produced up to a foot of snow in
eastern Nassau County and western Suffolk County of southeastern New York
State. Mild weather prevailed across the western half of the country. Nine
cities reported record high temperatures for the date, including Goodland
KS with a reading of 74 degrees. (The National Weather Summary) (Storm
Data)
...1989...
Strong northwesterly winds, ushering bitterly cold arctic air into the
central U.S., produced squalls with heavy snow in the Great Lakes Region.
Snowfall totals in Upper Michigan ranged up to 24 inches at Manistique.
Nine cities in Arkansas and Texas reported record low temperatures for the
date, including Calico Rock AR with a reading of 4 degrees above zero.
(Storm Data) (The National Weather Summary)

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