Ottawa, IL Weather Forecast and Current Conditions

Current Conditions From Nearby Station

Clear 5°F
Feels Like -1°F  
Humidity N/A Dew Point N/A Wind N 3 MPH Gusts 6 Barometer N/A
Report from a MADIS/MESONET weather station 7.5 mi. W of central Ottawa
at

Point Forecast at a Glance

ThuDec 4
Thu Dec 4: Sunny, High 13F
13
 
FriDec 5
Fri Dec 5: Mostly Sunny, High 28F, Low 22F
28
22
SatDec 6
Sat Dec 6: Mostly Cloudy, High 28F, Low 14F
28
14
SunDec 7
Sun Dec 7: Snow, High 22F, Low 4F
20%
22
4
MonDec 8
Mon Dec 8: Partly Sunny, High 22F, Low 14F
22
14
TueDec 9
Tue Dec 9: Mostly Cloudy, High 32F, Low 22F
32
22
WedDec 10
Wed Dec 10: Freezing Rain, High 33F
50%
33
 

7-Day Temperature Trend

Week Ahead Summary

High temperatures climb from 13°F to a high of 33°F by week's end. Unsettled weather expected with snow likely on at least 6 days.

Climate Context

This week's forecast shows temperatures running 11°F below the historical average for December. Normal highs for this period are around 36°F with lows around 20°F.

This Date in Weather History

1972 - Winds gusting to 70 mph sent the temperature at Livingston, MT, plunging from 52 degrees to 18 degrees in just twenty minutes.

More on this and other weather history

Ottawa, IL 7 Day Weather Forecast Details

Thursday Dec 4

Sunny

Day: Sunny, with a high near 13. Wind chill values as low as -9. North northwest wind around 5 mph becoming calm in the morning.

Increasing Clouds

Night: Increasing clouds, with a temperature falling to near -4 by 11pm, then rising to around 4 during the remainder of the night. Wind chill values as low as -13. Calm wind becoming south southwest around 5 mph after midnight. Winds could gust as high as 10 mph.

Friday Dec 5

Mostly Sunny

Day: Mostly sunny, with a high near 28. Wind chill values as low as -4. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

Snow

Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 22. South southwest wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 15 mph.

Saturday Dec 6

Mostly Cloudy

Day: Mostly cloudy, with a high near 28. West wind around 5 mph becoming north in the afternoon. Winds could gust as high as 10 mph.

Snow

Night: A 40 percent chance of snow. Mostly cloudy, with a low around 14.

Sunday Dec 7

Snow

Day: A 20 percent chance of snow before noon. Partly sunny, with a high near 22.

Mostly Cloudy

Night: Mostly cloudy, with a low around 4.

Monday Dec 8

Partly Sunny

Day: Partly sunny, with a high near 22.

Snow

Night: A chance of snow. Mostly cloudy, with a low around 14.

Tuesday Dec 9

Mostly Cloudy

Day: Mostly cloudy, with a high near 32.

Snow

Night: A chance of snow. Mostly cloudy, with a low around 22.

Wednesday Dec 10

Freezing Rain

Day: A chance of rain or freezing rain. Mostly cloudy, with a high near 33.


About Ottawa, IL

Ottawa is a city in LaSalle County, Illinois, United States, and its county seat. It is located at the confluence of the navigable Fox River and Illinois River, the latter being a conduit for river barges and connects Lake Michigan at Chicago to the Mississippi River. The population was 18,840 at the 2020 census. It is the principal city of the Ottawa, Illinois, micropolitan area.

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

How We Provide Better Local Weather

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.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.