What is today's weather forecast for Stillman Valley, IL?

Today's forecast for Stillman Valley shows a low of 12 degrees Fahrenheit. Patchy freezing fog after midnight.

What is the 7-day weather forecast for Stillman Valley, IL?

The 7-day forecast for Stillman Valley shows highs from 27 to 43 degrees and lows from 8 to 29 degrees Fahrenheit. Expect precipitation on 2 days with chances of 20% or higher.

Will it rain in Stillman Valley, IL this week?

Yes, rain is possible in Stillman Valley this week. Precipitation chances: Wednesday (50% chance), Thursday (70% chance).

How accurate is the Stillman Valley weather forecast?

WeatherForYou provides highly accurate Stillman Valley forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Stillman Valley, IL Weather Forecast and Current Conditions

Current Conditions From Nearby Station

Switch to Metric Units

22°F
Feels Like 22°F

Humidity 68% Dew Point 13°F Wind Calm Barometer 30.08 in.

Visibility 10 mi.

Report from a NOAA weather station 7.6 mi. NNE of central Stillman Valley
at 5:54 PM Mon, Dec 15, 2025

Point Forecast at a Glance

MonDec 15

TueDec 16

WedDec 17

ThuDec 18

70%

FriDec 19

SatDec 20

SunDec 21

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

Sharp cooling trend with high temperatures dropping from 34°F to 32°F, falling as low as 27°F. Some precipitation possible with wintry mix on at least one day.

Climate Context

This week's forecast shows temperatures running 3°F above the historical average for December. Normal highs for this period are around 33°F with lows around 18°F.

This Date in Weather History

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.

Stillman Valley, IL 7 Day Weather Forecast Details

Monday Dec 15

Night: Patchy freezing fog after midnight. Partly cloudy, with a low around 12. South southwest wind around 5 mph becoming calm.

Tuesday Dec 16

Day: Patchy freezing fog before 9am. Mostly sunny, with a high near 34. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.

Night: Mostly cloudy, with a low around 26. West wind 10 to 15 mph, with gusts as high as 20 mph.

Wednesday Dec 17

Day: Mostly sunny, with a high near 36. West wind 5 to 10 mph becoming south in the afternoon. Winds could gust as high as 15 mph.

Night: A 50 percent chance of rain after midnight. Mostly cloudy, with a low around 29. Breezy, with a south wind 10 to 20 mph, with gusts as high as 25 mph.

Thursday Dec 18

Day: Rain likely before noon, then a slight chance of rain and snow. Mostly cloudy, with a high near 43. Breezy. Chance of precipitation is 70%.

Night: Mostly cloudy, with a low around 8. Breezy.

Friday Dec 19

Day: Mostly sunny, with a high near 27.

Night: Mostly cloudy, with a low around 19.

Saturday Dec 20

Day: Partly sunny, with a high near 40.

Night: Partly cloudy, with a low around 18.

Sunday Dec 21

Day: Mostly sunny, with a high near 32.

Night: Mostly cloudy, with a low around 23.

Monday Dec 22

Day: Mostly cloudy, with a high near 37.

About Stillman Valley, IL

Stillman Valley is a village in Marion Township, Ogle County, Illinois, United States. It lies east of Byron, south of Rockford and west of Davis Junction. The population was 1,120 at the 2010 census, up from 1,048 in 2000. Stillman Valley Currently has a population of around 3,018. The village is located on the Iowa, Chicago and Eastern Railroad, on the old Chicago Great Western Railway before it merged and was pulled up. Also, Illinois Route 72 runs through the village. It is near the site of the first battle of the Black Hawk War of 1832. The war memorial for the Battle of Stillman's Run is located in this village.

Content from Wikipedia, licensed under CC BY-SA 3.0.

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Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

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