10-day forecast for Ottawa, IL: 39° to 69°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
68°
Best day: Friday, November 6
64° · 0.64 in
Worst day: Wednesday, November 4
Tap any day below to see morning, afternoon, evening and overnight.
Sat, 3162° / 50°0.06
Morning55°feels 54°
Afternoon62°feels 61°
Evening56°feels 55°
Overnight52°feels 51°
62 °
Ottawa, Saturday, 31 October
Light rain. High 62°, low 50°.
Pressure30.33 inHg
Wind3.6 mph E
Humidity65%
Visibility6.2 mi
Dew point47°
Sun, 0166° / 54°0.06
Morning54°feels 53°
Afternoon65°feels 64°
Evening57°feels 55°
Overnight55°feels 54°
66 °
Ottawa, Sunday, 1 November
Rain. High 66°, low 54°.
Pressure30.33 inHg
Wind5.2 mph E
Humidity75%
Visibility6.2 mi
Dew point52°
Mon, 0263° / 55°0
Morning55°feels 54°
Afternoon60°feels 59°
Evening61°feels 61°
Overnight55°feels 54°
63 °
Ottawa, Monday, 2 November
Overcast. High 63°, low 55°.
Pressure30.12 inHg
Wind9 mph SE
Humidity76%
Visibility6.2 mi
Dew point51°
Tue, 0369° / 61°0.07
Morning63°feels 62°
Afternoon68°feels 68°
Evening65°feels 65°
Overnight62°feels 61°
69 °
Ottawa, Tuesday, 3 November
Light rain. High 69°, low 61°.
Pressure29.88 inHg
Wind15.7 mph S
Humidity71%
Visibility6.2 mi
Dew point57°
Wed, 0464° / 58°0.64
Morning63°feels 63°
Afternoon64°feels 64°
Evening59°feels 59°
Overnight59°feels 58°
64 °
Ottawa, Wednesday, 4 November
Rain. High 64°, low 58°.
Pressure29.68 inHg
Wind12.9 mph S
Humidity94%
Visibility—
Dew point62°
Thu, 0567° / 55°0
Morning58°feels 58°
Afternoon65°feels 64°
Evening58°feels 56°
Overnight56°feels 54°
67 °
Ottawa, Thursday, 5 November
Overcast. High 67°, low 55°.
Pressure29.94 inHg
Wind7.3 mph SW
Humidity45%
Visibility—
Dew point43°
Fri, 0668° / 49°0
Morning57°feels 56°
Afternoon65°feels 64°
Evening50°feels 48°
Overnight49°feels 46°
68 °
Ottawa, Friday, 6 November
Overcast. High 68°, low 49°.
Pressure29.94 inHg
Wind12.2 mph SW
Humidity50%
Visibility—
Dew point47°
Sat, 0752° / 42°0
Morning47°feels 43°
Afternoon50°feels 47°
Evening45°feels 40°
Overnight43°feels 37°
52 °
Ottawa, Saturday, 7 November
Mostly clear. High 52°, low 42°.
Pressure30.15 inHg
Wind11.3 mph N
Humidity53%
Visibility—
Dew point34°
Sun, 0848° / 39°0
Morning41°feels 36°
Afternoon48°feels 43°
Evening44°feels 39°
Overnight42°feels 37°
48 °
Ottawa, Sunday, 8 November
Overcast. High 48°, low 39°.
Pressure30.33 inHg
Wind11.8 mph E
Humidity48%
Visibility—
Dew point28°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Ottawa, IL around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.