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Stephenson County, IL Weather and Climate Synopsis

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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
433 AM CST Sat Dec 16 2017

Clear skies and seasonably mild temperatures prevailed over
central and southeast Illinois overnight. Early morning readings
were in the lower to middle 30s.

Southwest winds will blow today, ahead of low pressure over the
Plains. This will bring a substantial warming trend to the region,
with highs reaching 10 to 15 degrees above normal. As the weather
system to the southwest approaches on Sunday, scattered rain
showers will overspread the area. Drier weather will move in from
the west on Monday, and temperatures will remain above normal.

High temperatures today will range from the mid 40s in northern
Illinois, to the mid 60s in central Missouri. Lows tonight will
range from the mid 20s in northern Illinois, to the lower 40s in
central 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 STEPHENSON County
Issued at 500 AM CST SAT DEC 16 2017

NORTHWEST ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         CLEAR     33  24  69 SW7       29.78F WCI  27          
STERLING*      CLOUDY    33  24  69 VRB5      29.80F WCI  29          
SAVANNA*       CLEAR     32  24  72 S5        29.78S WCI  28          

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, Saturday December 16, 2017

Across Illinois...temperatures are near 37 degrees north. Current sky condition is cloudy north. In the north, relative humidity is near 59%, and the dew point is near 24 degrees. Winds are from the southwest at 13 mph north, where conditions are not favorable for spraying due to strong winds. The wind chill is near 29 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 37 degrees at Rockford, O'Hare Airport, and Northerly Island. The lowest temperature is 37 degrees at Rockford, O'Hare Airport, and Northerly Island.


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 STEPHENSON County,IL

414 AM CST Sat Dec 16 2017

 DAY ONE  TODAY AND TONIGHT

No hazardous weather is expected at this time.

 DAYS TWO THROUGH SEVEN  SUNDAY THROUGH FRIDAY

Accumulating snow is possible Thursday and Thursday night. 
It is too early to forecast the exact track of the low and 
potential snow amounts. Those with travel plans late in the week 
should keep up with the latest forecast.

 SPOTTER INFORMATION STATEMENT  

Spotter activation will not be needed today or tonight.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For STEPHENSON County, IL
357 AM CST Sat Dec 16 2017

EARLY THIS MORNING
Mostly cloudy. South wind 5 to 10 mph.

TODAY
Mostly sunny. High around 40. South wind 5 to 10 mph shifting to the southeast in the afternoon.

TONIGHT
Partly cloudy. Patchy fog after midnight. Low in the mid 20s. East wind 5 to 10 mph.

SUNDAY
Mostly cloudy. Patchy fog in the morning. A 20 percent chance of light rain in the afternoon. High in the upper 30s. East wind 5 to 10 mph shifting to the southwest in the afternoon.

SUNDAY NIGHT
Mostly cloudy. Patchy fog through the night. Low in the upper 20s. West wind 5 to 10 mph.

MONDAY
Partly sunny. Patchy fog in the morning. High around 40. Southwest wind 10 to 15 mph.

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

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

WEDNESDAY AND WEDNESDAY NIGHT
Mostly cloudy. High in the upper 30s. Low in the mid 20s.

THURSDAY
Cloudy with a 50 percent chance of snow possibly mixed with rain. High in the upper 30s.

THURSDAY NIGHT
Snow likely. Low around 20. Chance of snow 70 percent.

FRIDAY
Colder. Partly sunny. A 30 percent chance of snow in the morning. High in the upper 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
                             ILLINOIS                                                                     
                 ---------------------------------------------
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                   DEC 21-25    DEC 23-29    DEC       DEC-FEB                      
                 -----------  -----------  --------  ---------
   Temperature:      Below        Below     Normal     Normal                      
 Precipitation:      Above        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

Saturday December 16, 2017 the 350th Day of Year

---------------------------------------------------
SUN
Declination -23.350000
Distance 0.999725 AU
Rise 08:14 EST Set 17:36 EST
Transit Meridian 12:55 EST
Civil Twilight Begins 07:45 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 16TH
HISTORIC WEATHER EVENTS
...1835...
New England experienced one of their coldest days of record. At noon on
that bitterly cold Wednesday the mercury stood at four degrees below at
Boston, 15 degrees below at Norfolk CT, and 17 degrees below at Hanover NH.
The temperature at Boston was 12 degrees below zero by sunset. Gale force
winds accompanied the severe cold, and that night a great New York City
fire destroyed much of the financial district. (David Ludlum)
...1869...
A bill was introduced in the House of Representatives, 41st Congress, 
calling for the taking [of] meteorological observations at the military 
stations in the interior of the continent, and for giving notice on the 
northern lakes and Atlantic seaboard of the approach and force of storms. 
This would be signed in to law February 9, 1870, by President Grant, 
establishing what would come to be called the National Weather Service. You 
can see the actual bill on-line at: 
 here.
...1917...
An ice jam closed the Ohio River between Warsaw KY and Rising Sun IN. The
thirty foot high ice jam held for 58 days, and backed up the river a
distance of 100 miles. (David Ludlum)
...1987...
A Pacific storm battered the coast of California with rain and high winds,
and dumped heavy snow on the mountains of California. Winds along the coast
gusted to 70 mph at Point Arguello, and winds in the Tehachapi Mountains of
southern California gusted to 100 mph at Wheeler Ridge. Snowfall totals
ranged up to 24 inches at Mammoth Mountain. Snow fell for two minutes at
Malibu Beach, and Disneyland was closed due to the weather for only the
second time in twenty-four years. A winter storm which began in the
Southern Rockies four days earlier finished its course producing snow and
high winds in New England. Snowfall totals ranged up to 19 inches at
Blanchard ME. (The National Weather Summary) (Storm Data)
...1988...
Fairbanks AK reported freezing rain and record warm temperatures. The
afternoon high of 41 degrees was 43 degrees above normal. Snow and high
winds continued to plague the mountains of southern California. Mount
Wilson CA reported two inches of rain in six hours during the early
morning, and a storm total of more than 3.50 inches of rain. (The National
Weather Summary)
...1989...
Fifty-seven cities from the Southern and Central Plains to the Appalachians
reported record low temperatures for the date, including North Platte NE
with a reading of 17 degrees below zero. Squalls in the Great Lakes Region
produced 18 inches of snow at Syracuse NY, and 30 inches at Carlisle IND.
Low pressure brought heavy snow to northern New England, with 18 inches
reported at Derby VT and Saint Johnsbury VT. (The National Weather Summary)
(Storm Data)

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