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Boone County, IL Weather and Climate Synopsis

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36 Hr. Forecast Map
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Weather Summary Hourly Observations Nowcast Agricultural Weather Outlook
7 Day Forecast Medium & Long Range Outlook Almanac Historical Facts

US Weekly Rainfall Departure

US Weekly Temperature 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
440 AM CST Sun Dec 17 2017

High clouds overspread central and southeast Illinois overnight.
Early morning temperatures were mild for the season, in the 30s.

A weak weather system will track northeast across the area today,
producing some scattered light rain showers. Patchy drizzle or
sprinkles will linger into Monday, as a weak front shifts through
the state. After this system exits to the east, dry and mild
conditions will prevail over the Midwest, through mid-week.

High temperatures today will range from the mid 30s in northern
Illinois, to near 50 degrees in central Missouri. Lows tonight
will range from the mid 20s in northern Iowa, to the lower 40s in
southern Illinois.

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 BOONE County
Issued at 500 AM CST SUN DEC 17 2017

ROCKFORD       CLOUDY    33  31  92 NE7       30.08R FOG     WCI  27  
FREEPORT*      CLOUDY    32  32  99 E9        30.08R FOG     WCI  24  
ROCHELLE*      CLOUDY    32  31  98 E8        30.06S FOG     WCI  25  
DE KALB*       CLOUDY    32  31  97 NE8       30.05F FOG     WCI  25  
PERU*          CLOUDY    30  27  90 E7        30.05S WCI  23          

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 500am CST, Sunday December 17, 2017

Across Illinois...temperatures are near 33 degrees north, near 41 degrees central, and near 41 degrees south. Current sky conditions are cloudy north, cloudy central, and cloudy south. In the north, relative humidity is near 92%, and the dew point is near 31 degrees. In the central part of the state, relative humidity is near 65%, and the dew point is near 30 degrees. In the south, relative humidity is near 73%, and the dew point is near 33 degrees. There is patchy fog north. Winds are from the northeast at 7 mph north, where conditions are favorable for spraying. The wind chill is near 27 degrees north. Winds are from the southwest at 10 mph central, where conditions are favorable for spraying. Winds are from the south at 6 mph south, where conditions are favorable for spraying. The livestock cold stress index is in the no stress category north, no stress category central, and no stress category south. Based on current available observations, the highest temperature is 45 degrees at Pittsfield. The lowest temperature is 27 degrees at Lansing.

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 BOONE County,IL

348 AM CST Sun Dec 17 2017 /448 AM EST Sun Dec 17 2017/

 DAY ONE  Today and Tonight.


  Limited Fog Risk.

 DAYS TWO THROUGH SEVEN  Monday through Saturday.

  Limited Fog Risk.


Spotter activation will not be necessary through tonight.

NWS Severe Weather Map , Convective Outlook

7-Day Forecast For BOONE County, IL
329 AM CST Sun Dec 17 2017

Cloudy. Highs in the mid 30s. East winds 5 to 10 mph in the morning becoming southeast in the afternoon.

Cloudy. Occasional drizzle in the evening. Patchy fog. Lows in the lower 30s. West winds around 5 mph.

Cloudy in the morning then becoming partly sunny. Patchy fog in the morning. Highs in the upper 30s. Southwest winds 10 to 15 mph.

Partly cloudy. Lows in the mid 30s. Southwest winds 10 to 15 mph.

Partly cloudy in the morning then clearing. Highs in the upper 40s. West winds 10 to 15 mph.

Clear. Lows in the lower 20s.

Partly sunny. Highs in the mid 30s.

Mostly cloudy. Lows in the mid 20s.

Mostly cloudy. Chance of rain in the afternoon. Highs in the upper 30s. Chance of precipitation 40 percent.

Cloudy. Chance of rain and snow in the evening, then snow and rain likely after midnight. Lows in the lower 30s. Chance of precipitation 70 percent.

Mostly cloudy. Rain and snow likely in the morning. Highs in the mid 30s. Then temperatures falling into the lower 30s by evening. Chance of precipitation 60 percent.

Partly cloudy. Lows 15 to 19.

Partly sunny. Highs in the mid 20s.

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
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                   DEC 22-26    DEC 24-30    DEC       DEC-FEB                      
                 -----------  -----------  --------  ---------
   Temperature:      Below        Below     Normal     Normal                      
 Precipitation:     Normal       Normal     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

Sunday December 17, 2017 the 351th Day of Year

Declination -23.380000
Distance 0.999725 AU
Rise 08:15 EST Set 17:36 EST
Transit Meridian 12:55 EST
Civil Twilight Begins 07:45 EST Ends 18:06 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

A three week blockade of snow began at Portland OR. A record December total
of 34 inches was received. (David Ludlum)
A severe icestorm struck central Illinois. It coated the ground with nearly
two inches of glaze at Springfield. The storm caused 21 million dollars
damage along with much hardship. Ice was on the trees until the 4th of
January, and electricity was not restored until January 10th. (David
An icestorm in western New York State resulted in much damage and hardship.
A Buffalo report stated, "one was kept awake by the breaking limbs, which
snapped off with a report much louder than a rifle shot." (17th-18th) (The
Weather Channel)
A storm in the southwestern U.S. brought heavy rain and heavy snow to parts
of California, Nevada, Arizona, Utah and New Mexico. Charleston NV was
blanketed with 12 inches of snow. Lake Havasu City AZ was drenched with
2.26 inches of rain. (Storm Data) (The National Weather Summary)
Squalls brought locally heavy snow to the southeastern shores of Lake
Michigan. Totals in Michigan ranged up to 14 inches at Harvey. Totals in
Ohio ranged up to 16 inches at Chardon. (The National Weather Summary)
(Storm Data)
Twenty-one cities from Kentucky to Pennsylvania reported record low
temperatures for the date, including Columbus OH with a reading of 12
degrees below zero. Heavy snow continued in the Colorado Rockies. Vail
received 65 inches of snow between the 14th and the 18th of December.
Steamboat Springs was buried under 74 inches, and reported a total of 108
inches of snow between the 10th and the 18th of the month. (The National
Weather Summary) (Storm Data)

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