FORECAST FOR DEKALB AND VICINITY, 11/21/09, 12:40 PM

Today...mostly sunny. High of 55 degrees. Southeast winds around 5 - 10 MPH.

Tonight...dense fog in some areas in the early morning. Becoming partly cloudy. Low of 36 degrees. South winds around 5 MPH.

Monday...partly cloudy. Low in the upper 30s. High in the lower 50s.

Tuesday...cloudy with a chance of light rain. Low in the lower 40s. High in the upper 40s.

Wednesday...cloudy with a slight chance of rain. Low in the lower or middle 30s. High in the middle 40s.

Thursday, Thanksgiving day...cloudy with a slight chance of rain and snow. Low in the lower 30s. High in the lower 40s.

Friday...mostly cloudy. Low in the lower 30s. High in the lower 40s.

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CLIMATE DATA: Yesterday's high,  50 degrees; last night's low, 31 degrees.
The average high/low temperature is 43/27. We have had no rain at
the DeKalb campus over the last 24 hours ending at 7 AM this morning.

We have had .01" of rain this month, and no snow. On average, we
should see 2.82" of liquid equivalent, and 2.2" of snow, by November 30.





We have had 42.35" of liquid equivalent so far this year, and a trace of
snow so far this season. By November 30, our average annual liquid total
should be 35.22".

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PRECIPITATION FOR DEKALB CAMPUS: No rain is expected in our DeKalb Campus for this weekend.

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FORECAST DISCUSSION: Our DeKalb campus is currently under the influence of high pressure ridge...this pattern should continue through Monday. The influence of high pressure ridge will cause our maximum temperature to reach middle 50s for today and tomorrow, which is above our normal in mid-November. We should see a lot of sunshine during the day through Monday!

A surface high pressure over east Ohio brings light southeasterly winds to our forecast area...and it should move northeastward as time progresses. No rain is anticipated through Monday. However, abundant moisture from the south may introduce fog in some areas during early Sunday morning given that wind speeds should be weak tonight.

Some mid-level disturbances should occur over northern Illinois from Tuesday morning through through Thursday, which may bring some precipitation during this time...given that the moisture level seems to be sufficient to cause some wet conditions. Very cold air  may approach our area on Thursday, which may introduce a mix of light rain and snow.

The GFS indicates dry conditions for Friday and Saturday and slight disturbance on Sunday. However, the conditions for the next weekend is still uncertain for now.