Dekalb, Illinois Weather Conditions

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Current Conditions

  • 34°
  • Clear
  • Wind: WNW 8 mph
  • Humidity: 85%
  • Visibility: 10.0 miles
  • Dew Point: 30°
  • Pressure: 30.12 in. -
  • Heat Index: 28

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Next 12 Hours

8  am
11  am
2  pm
5  pm
8  pm
Clear
Clear
Clear
Clear
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Clear
Clear
40°
51°
57°
57°
47°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Monday
  • Clear
  • High: 60 °
  • Low: 34 °
  • Clear
  • Tuesday
  • Clear
  • High: 63 °
  • Low: 36 °
  • Clear
  • Wednesday
  • Clear
  • High: 65 °
  • Low: 38 °
  • Clear
  • Thursday
  • Partly Cloudy
  • High: 63 °
  • Low: 37 °
  • Partly Cloudy
  • Friday
  • Clear
  • High: 69 °
  • Low: 49 °
  • Clear

Forecast for Dekalb, Illinois

Updated: 4:16 AM CDT on January 27, 2015

  • Monday

    Sunshine and a few afternoon clouds. High around 60F. Winds N at 10 to 20 mph.

  • Monday Night

    A clear sky. Low 34F. Winds NE at 5 to 10 mph.

  • Tuesday

    Sunny, along with a few afternoon clouds. High 63F. Winds NE at 5 to 10 mph.

  • Tuesday Night

    A few clouds. Low 36F. Winds NE at 5 to 10 mph.

  • Wednesday

    Sunshine and some clouds. High near 65F. Winds NE at 10 to 15 mph.

  • Wednesday Night

    Some clouds early will give way to generally clear conditions overnight. Low 38F. Winds NE at 5 to 10 mph.

  • Thursday

    Partly to mostly cloudy. High 63F. Winds NNE at 10 to 20 mph.

  • Thursday Night

    Partly cloudy skies. Low 37F. Winds SE at 5 to 10 mph.

  • Friday

    Mostly sunny skies. High 69F. Winds W at 10 to 15 mph.

  • Friday Night

    Partly cloudy early with increasing clouds overnight. Low 49F. Winds SW at 5 to 10 mph.

  • Saturday

    Partly cloudy. High around 75F. Winds WSW at 10 to 15 mph.

  • Saturday Night

    A mostly clear sky. Low 52F. Winds light and variable.

  • Sunday

    Partly cloudy early with thunderstorms becoming likely during the afternoon. High 78F. Winds S at 10 to 20 mph. Chance of rain 80%.

  • Sunday Night

    Showers likely and possibly a thunderstorm during the evening, then some lingering showers still possible overnight. Low 56F. Winds S at 10 to 15 mph. Chance of rain 70%.

  • Monday

    Showers in the morning with isolated thunderstorms arriving in the afternoon. High 76F. Winds SW at 10 to 15 mph. Chance of rain 60%.

  • Monday Night

    Showers and thundershowers during the evening will give way to steady rain overnight. Low 54F. Winds SW at 5 to 10 mph. Chance of rain 60%.

  • Tuesday

    Rain early...then remaining cloudy with showers in the afternoon. High around 70F. Winds ENE at 10 to 15 mph. Chance of rain 60%. Rainfall near a quarter of an inch.

  • Tuesday Night

    Cloudy with a few showers. Low 52F. Winds ENE at 5 to 10 mph. Chance of rain 50%.

  • Wednesday

    Partly cloudy skies. High 72F. Winds ESE at 10 to 20 mph.

  • Wednesday Night

    Variable clouds with scattered showers and thunderstorms, mainly overnight. Low 51F. Winds ESE at 10 to 15 mph. Chance of rain 40%.

  • Thursday

    Mixed clouds and sun with scattered thunderstorms. High around 70F. Winds ESE at 10 to 15 mph. Chance of rain 50%.

  • Thursday Night

    Thunderstorms likely. Low 52F. Winds ESE at 5 to 10 mph. Chance of rain 80%.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: South DeKalb, DeKalb, IL

Updated: 7:00 AM CDT

Temperature: 35.3 °F Dew Point: 32 °F Humidity: 86% Wind: Calm Pressure: 30.12 in Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: Rob's Horsepower Haven, DeKalb, IL

Updated: 7:00 AM CDT

Temperature: 35.6 °F Dew Point: 31 °F Humidity: 84% Wind: Calm Pressure: 30.12 in Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: DeKalb, IL

Updated: 6:49 AM CDT

Temperature: 36.4 °F Dew Point: 32 °F Humidity: 84% Wind: NNW at 2.0 mph Pressure: 30.10 in Hourly Precipitation: - Windchill: 36 °F Graphs

Location: Sycamore, IL

Updated: 7:00 AM CDT

Temperature: 37.8 °F Dew Point: 32 °F Humidity: 78% Wind: NW at 4.0 mph Pressure: 30.10 in Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: MesoWest, Malta, IL

Updated: 5:15 AM CDT

Temperature: 34 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: MesoWest, Sycamore, IL

Updated: 6:25 AM CDT

Temperature: 35 °F Dew Point: 34 °F Humidity: 96% Wind: NW at 6 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 30 °F Graphs

Location: Heron Creek, Sycamore, IL

Updated: 7:00 AM CDT

Temperature: 39.9 °F Dew Point: 32 °F Humidity: 73% Wind: NE at 3.0 mph Pressure: 30.11 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: OG Heron Creek, Sycamore, IL

Updated: 7:00 AM CDT

Temperature: 39.6 °F Dew Point: 32 °F Humidity: 76% Wind: West at 2.0 mph Pressure: 30.12 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: CRN, Shabbona, IL

Updated: 4:00 AM CDT

Temperature:  °F Dew Point: - Humidity: 81% Wind: North at 4 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Out On the Farm, Clare, IL

Updated: 7:00 AM CDT

Temperature: 35.2 °F Dew Point: 32 °F Humidity: 89% Wind: Calm Pressure: 30.13 in Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: Ellen Oaks Subdivision, Genoa, IL

Updated: 7:00 AM CDT

Temperature: 39.6 °F Dew Point: 33 °F Humidity: 77% Wind: Calm Pressure: 30.13 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Country Meadows, Kirkland, IL

Updated: 6:52 AM CDT

Temperature: 35.3 °F Dew Point: 29 °F Humidity: 79% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: MesoWest, Elburn, IL

Updated: 6:00 AM CDT

Temperature: 36 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: Burlington Prairie Forest Preserve, Sycamore, IL

Updated: 6:57 AM CDT

Temperature: 39.6 °F Dew Point: 34 °F Humidity: 79% Wind: Calm Pressure: 29.93 in Hourly Precipitation: - Windchill: 40 °F Graphs

Location: South Sycamore Street, Hinckley, IL

Updated: 6:56 AM CDT

Temperature: 36.0 °F Dew Point: 30 °F Humidity: 78% Wind: North at - Pressure: 29.95 in Hourly Precipitation: - Windchill: 36 °F Graphs

Location: Genoa Road, Genoa, IL

Updated: 6:55 AM CDT

Temperature: 36.3 °F Dew Point: 33 °F Humidity: 88% Wind: Calm Pressure: 30.13 in Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: APRSWXNET, Elburn, IL

Updated: 6:27 AM CDT

Temperature: 34 °F Dew Point: 31 °F Humidity: 90% Wind: Calm Pressure: 30.09 in Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: Columbine, Elburn, IL

Updated: 6:53 AM CDT

Temperature: 34.5 °F Dew Point: 31 °F Humidity: 87% Wind: NW at 4.0 mph Pressure: 30.08 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: Columbine Square, Elburn, IL

Updated: 6:48 AM CDT

Temperature: 36.0 °F Dew Point: 32 °F Humidity: 84% Wind: NNW at 1.0 mph Pressure: 30.06 in Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: Prairie Valley North, Elburn, IL

Updated: 6:58 AM CDT

Temperature: 35.1 °F Dew Point: 32 °F Humidity: 88% Wind: West at 4.7 mph Pressure: 30.18 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: Prairie Highlands, Elburn, IL

Updated: 7:00 AM CDT

Temperature: 36.7 °F Dew Point: 33 °F Humidity: 86% Wind: NW at 2.0 mph Pressure: 30.11 in Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

Location: Griffith Avenue, Elburn, IL

Updated: 3:40 AM CDT

Temperature: 41.0 °F Dew Point: 31 °F Humidity: 68% Wind: North at - Pressure: 29.29 in Hourly Precipitation: - Windchill: 41 °F Graphs

Location: MesoWest, Steward, IL

Updated: 6:25 AM CDT

Temperature: 36 °F Dew Point: 32 °F Humidity: 85% Wind: NNW at 8 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 30 °F Graphs

Location: Hampshire, IL, Hampshire, IL

Updated: 7:00 AM CDT

Temperature: 33.6 °F Dew Point: 30 °F Humidity: 85% Wind: ENE at 2.0 mph Pressure: 30.14 in Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: K9GPC, Rochelle, IL

Updated: 7:00 AM CDT

Temperature: 38.7 °F Dew Point: -4 °F Humidity: 16% Wind: Calm Pressure: 29.35 in Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

Location: CamptonHillsWeather.com Central Kane County, St Charles, IL

Updated: 7:00 AM CDT

Temperature: 38.0 °F Dew Point: 32 °F Humidity: 80% Wind: North at 2.0 mph Pressure: 30.11 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: APRSWXNET, Wasco, IL

Updated: 6:21 AM CDT

Temperature: 35 °F Dew Point: 29 °F Humidity: 77% Wind: Calm Pressure: 30.07 in Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: Windswept Acres, Marengo, IL

Updated: 7:00 AM CDT

Temperature: 37.1 °F Dew Point: 32 °F Humidity: 82% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

Location: Saint Charles Burr Road, Saint Charles, IL

Updated: 6:58 AM CDT

Temperature: 38.5 °F Dew Point: 33 °F Humidity: 79% Wind: Calm Pressure: 29.85 in Hourly Precipitation: - Windchill: 38 °F Graphs

Location: Mill Creek, Geneva, IL

Updated: 6:50 AM CDT

Temperature: 38.7 °F Dew Point: 32 °F Humidity: 77% Wind: NW at 1.0 mph Pressure: 30.05 in Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

Location: Big Timber Road, Hampshire, IL

Updated: 6:55 AM CDT

Temperature: 34.2 °F Dew Point: 28 °F Humidity: 79% Wind: North at - Pressure: 30.19 in Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: Alexander Drive, Geneva, IL

Updated: 6:55 AM CDT

Temperature: 38.8 °F Dew Point: 31 °F Humidity: 74% Wind: North at - Pressure: 29.60 in Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

Location: Mill Creek (NE), Geneva, IL

Updated: 7:00 AM CDT

Temperature: 38.8 °F Dew Point: 34 °F Humidity: 83% Wind: Calm Pressure: 30.14 in Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

Location: 3 Lakes, Saint Charles, IL

Updated: 6:44 AM CDT

Temperature: 34.7 °F Dew Point: 30 °F Humidity: 83% Wind: North at 1.1 mph Pressure: 29.85 in Hourly Precipitation: - Windchill: 35 °F Graphs

Location: MesoWest, Ashton, IL

Updated: 6:00 AM CDT

Temperature: 30 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 30 °F Graphs

Location: Paw Paw, Il, Paw Paw, IL

Updated: 6:28 AM CDT

Temperature: 36.6 °F Dew Point: 31 °F Humidity: 81% Wind: NW at 1.0 mph Pressure: 30.11 in Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Chicago/Romeoville Illinois 
612 am CDT Monday Apr 27 2015 


Short term... 
320 am CDT 


Through Tuesday... 


Quiet weather is expected over much of the upcoming week. For 
Monday and Tuesday...surface high pressure will be in place 
across the Canadian prairies and upper Midwest. Weather today will 
be almost a Carbon copy of yesterday outside of a few additional 
clouds. Expect a modest north/northeast wind to keep conditions 
cool around 50 along the lake front...but expect upper 50s to 
around 60 inland. Upper ridging will gradually build across the 
Great Lakes with middle level temperatures warming as the thermal trough 
gets shunted off towards the East Coast. Surface winds will be 
lighter on Tuesday but still expect onshore flow keeping temperatures 
lower along the lake front. Inland...expect a 4-5 degree warmup 
with temperatures in the low to middle 60s. 


Bmd 


&& 


Long term... 
320 am CDT 


Wednesday through Sunday... temperatures will inch a couple 
degrees warmer on Wednesday ahead of an upper level disturbance 
prognosticated to dive into the Midwest Wednesday evening bringing at 
least a glancing blow of slightly cooler air. Models have gone 
back and forth on chances for showers with this system. European model (ecmwf) is 
now dry while the GFS produces some convective precipitation across north 
central Illinois. Looking at soundings though...warm nose around 700 mb 
should cap deep convection and the arrival of the colder air looks 
to just mix peak heating. Suppose I cant rule out a few sprinkles 
but given the dryness of the airmass the possibility is pretty 
minimal. More likely would expect dewpoints to mix down farther in 
the afternoon resulting in high based cumulus and maybe virga. At any 
rate not Worth more than a silent 10 pop. After a slight step back 
in temperatures Thursday with highs in the low to middle 60s...the warming 
trend kicks back into gear to end the week and head into the 
weekend with 70s Saturday as the surface ridge moves to our east 
and return flow overspreads the forecast area...and then possibly 
even upper 70s Sunday. Models again try to produce some convection 
over the weekend though synoptic forcing is fairly weak...mainly 
some modest middle level warm air advection. Details are fuzzy this 
far out given the subtlety of the forcing. 


Bmd 


&& 


Aviation... 


//Ord and mdw concerns...updated 12z... 


* northeast winds with gusts of 15 to 20 knots this afternoon. 


Kjb 


//discussion...updated 12z... 


The region will remain within southern periphery of a surface 
high pressure ridge over upper Midwest today. This will again 
result in a northeasterly wind component around 10-15 kts with 
gusts potentially as high as 20 knots gusts this afternoon. The 
surface pressure gradient will weaken tonight allowing winds to 
diminish below 10 kts. Aside from a deck of scattered to perhaps briefly 
broken cloud cover at or just above 3,000 feet above ground level during the day 
today...VFR conditions are expected during the period. 


Kjb 




//Ord and mdw confidence...updated 12z... 


* high for all elements. 


Kjb 


//outlook for Ord/mdw for 00z Wednesday-12z Monday...updated 12z... 


Tuesday night through Thursday. Primarily VFR. North-northeast 
winds. 


Friday...VFR. Chance of showers Friday night. Southwest winds. 


Saturday...VFR. Southwest winds becoming east-southeast in the 
afternoon. 


Sunday...chance of thunderstorms and rain. South winds. 


Kjb 


&& 


Marine... 
219 am CDT 


Northerly winds up around 20 knots will continue over today...and due 
to the prolonged onshore flow over the past few days over the 
Illinois and Indiana near shores...I have decided to extend the 
Small Craft Advisory through early this evening. Waves from the 
Michigan City buoy have been hovering right around 4 feet for the 
last several hours...and I dont see any reason why these waves would 
subside much given the continued onshore flow today. These northerly 
winds will ease tonight as the surface ridge of high pressure begins 
to shift over the lake. This will set up lighter onshore lake breeze 
influenced winds on Tuesday. 


Wind speeds could end up increasing a bit again out of the north by 
late in the week as it appears that a low pressure system will over 
the northeastern Continental U.S....and this could set up another enhanced 
surface gradient supportive of moderately strength northerly winds 
later Wednesday and Thursday. This could again cause my near shore 
waters to flirt with Small Craft Advisory criteria waves. 


Kjb 


&& 


Lot watches/warnings/advisories... 
Illinois...none. 
In...none. 
Lm...Small Craft Advisory...nearshore waters 
until 10 PM Monday. 


&& 


$$ 


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