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Mercer County, IL Weather and Climate Synopsis

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7 Day Forecast Medium & Long Range Outlook Almanac Historical Facts





US Weekly Rainfall Departure



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

Weather Summary For Central And Southeast Illinois
National Weather Service Lincoln IL
859 PM CST Thu Dec 14 2017

Mostly cloudy skies and a light breeze were seen across central 
and southeast Illinois this evening. Temperatures around the area 
at 8 PM, ranged from 16 degrees at Lacon, to 32 degrees at Flora.

High pressure will dominate the Midwest through Friday, bringing 
dry weather and seasonable temperatures. Southerly flow developing
this weekend will allow temperatures to climb several degrees 
above normal. The next storm system approaching from the 
southwest, will spread scattered rain showers across the region 
on Sunday.

Low temperatures overnight, will range from the mid teens across 
northeast Iowa, southern Wisconsin, northern Illinois, and northern
Indiana, to the lower 30s across western Missouri.

High temperatures on Friday, will range from the mid 20s across 
central Wisconsin, to the mid 40s across western Kentucky and much
of Missouri.

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

Click here for UKAWC Point Agricultural, Lawn & Garden Forecast/Outlook in case of corrupt tables.
Regional Hourly Observations For MERCER County
Issued at 400 AM CST FRI DEC 15 2017

NORTHWEST ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         CLOUDY    29  21  72 W14       29.99F WCI  18          
STERLING*      CLOUDY    27  20  75 W14       29.96F WCI  16          
SAVANNA*       CLOUDY    27  19  72 W12       29.96F WCI  17          

Current Temperatures, Dewpoint Map, RH, Wind, Regional Obs, Surface 4-Panel
Meteograms : Springfield , Peoria , Quad City , Chicago (O'Hare) , Rockford


Current Agricultural Weather Conditions in Illinois
Based on observations at 400am CST, Friday December 15, 2017

Across Illinois...temperatures are near 25 degrees north. Current sky condition is cloudy north. In the north, relative humidity is near 68%, and the dew point is near 16 degrees. Winds are from the southwest at 12 mph north, where conditions are favorable for spraying. The wind chill is near 14 degrees north. Winds are unavailable central. Winds are unavailable south. The livestock cold stress index is in the no stress category north, unavailable category central, and unavailable category south. Based on current available observations, the highest temperature is 25 degrees at Rockford and O'Hare Airport. The lowest temperature is 23 degrees at Bloomington.


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),Livestock Heat Stress Index (LSI), Wind Chill Map
Hazardous Weather Outlook For MERCER County,IL

305 AM CST Thu Dec 14 2017

 DAY ONE  TODAY AND TONIGHT

No hazardous weather is expected at this time.

 DAYS TWO THROUGH SEVEN  FRIDAY THROUGH WEDNESDAY

Sunday  there is a chance of light snow and sleet, becoming light
rain. Rising temperatures and light precipitation amounts support
little or no winter impacts at this time.

 SPOTTER INFORMATION STATEMENT  

Spotter activation will not be needed today or tonight.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For MERCER County, IL
312 AM CST Fri Dec 15 2017

EARLY THIS MORNING
Cloudy. Scattered flurries. West wind 5 to 10 mph.

TODAY
Not as cold. Mostly cloudy. High in the upper 30s. West wind 10 to 15 mph. Gusts up to 25 mph in the afternoon.

TONIGHT
Mostly cloudy in the evening then becoming partly cloudy. Low in the upper 20s. Southwest wind 10 to 15 mph.

SATURDAY
Sunny. High in the upper 40s. Southwest wind 5 to 10 mph.

SATURDAY NIGHT
Partly cloudy. Low around 30. South wind 5 to 10 mph.

SUNDAY
Cloudy. A chance of light rain possibly mixed with snow in the morning, then a chance of light rain in the afternoon. High in the lower 40s. Southwest wind 5 to 10 mph. Chance of precipitation 50 percent.

SUNDAY NIGHT AND MONDAY
Mostly cloudy. Low around 30. High in the mid 40s.

MONDAY NIGHT
Partly cloudy. Low in the lower 30s.

TUESDAY AND TUESDAY NIGHT
Mostly clear. High in the mid 40s. Low in the mid 20s.

WEDNESDAY AND WEDNESDAY NIGHT
Partly cloudy. High in the mid 40s. Low in the lower 30s.

THURSDAY
Partly sunny. A 40 percent chance of rain in the afternoon. High in the mid 40s.

12-48 Hr Surface, 12-48 Hr ETA 500mb/Sfc, TWC Forecast, Fire Danger, Day 1 Precip, Day 2 Precip, Days 1-5 Precip
NGM 60 Hr Forecast Meteograms : Springfield , Peoria , Quad City , Chicago (O'Hare) , Rockford , Severe Weather Pot.-Day 1, Day 2


Medium & Long Range Outlook For Illinois
                             ILLINOIS                                                                     
                 ---------------------------------------------
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                   DEC 20-24    DEC 22-28    DEC       DEC-FEB                      
                 -----------  -----------  --------  ---------
   Temperature:     Normal        Below     Normal     Normal                      
 Precipitation:     Normal        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
MRF 10-Day Forecast Meteograms : Springfield , Peoria , Quad City , Chicago (O'Hare) , Rockford

Almanac Information

Friday December 15, 2017 the 349th Day of Year

---------------------------------------------------
SUN
Declination -23.310000
Distance 0.999725 AU
Rise 08:14 EST Set 17:35 EST
Transit Meridian 12:54 EST
Civil Twilight Begins 07:44 EST Ends 18:05 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 15TH
HISTORIC WEATHER EVENTS
...1839...
The first of triple storms hit Massachusetts Bay. The storm produced whole
gales, and more than 20 inches of snow in interior New England. There was
great loss of life at Gloucester MA. (David Ludlum)
...1901...
An intense cold front swept across the eastern U.S. The cold front produced
heavy rain in Louisiana, and heavy snow in the northeastern U.S. (David
Ludlum)
...1945...
A record December snowstorm buried Buffalo NY under 36.6 inches of snow,
with unofficial totals south of the city ranging up to 70 inches. Travel
was brought to a halt by the storm. (14th-17th) (The Weather Channel)
...1987...
A major winter storm hit the Great Lakes Region, intensifying explosively
as it crossed northern Illinois. High winds and heavy snow created blizzard
conditions in southeastern Wisconsin. Winds gusted to 73 mph, and snowfall
totals ranged up to 17 inches at LaFarge. The barometric pressure at
Chicago IL dropped three quarters of an inch in six hours to 28.96 inches,
a record low reading for December. Up to a foot of snow blanketed northern
Illinois, and winds in the Chicago area gusted to 75 mph. O'Hare Airport in
Chicago was closed for several hours, for only the fourth time in twenty
years. High winds derailed train cars at Avon IN. Light winds and partly
sunny skies were reported near the center of the storm, a feature typical
of tropical storms. (The National Weather Summary) (Storm Data)
...1988...
High pressure in the Pacific Northwest and low pressure in the southwestern
U.S. combined to produced high winds from Utah to California. Winds gusting
to 70 mph in the San Francisco area left nearly 300,000 residents without
electricity. Winds in Utah gusted to 105 mph at Centerville. (The National
Weather Summary) (Storm Data)
...1989...
A couple of low pressure systems spread heavy snow across the northeastern
U.S. Up to two feet of snow was reported along Lake Erie in northeastern
Ohio, and up to ten inches was reported in Connecticut. Heavy snow squalls
developed over Michigan for the third day in a row. Three Oaks MI reported
25 inches of snow in two days. Twenty-six cities in the north central U.S.
reported record low temperatures for the date. The low of 10 degrees below
zero at Wichita KS was a December record for that location. (The National
Weather Summary) (Storm Data)

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