Monthly outlook for Oak Ridge, IL: average high 66.1°, average low 48.4°. That is 1.5° above the climate normal for October. Precipitation is expected on 4 days (about 2.2 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 12 October (81.3°), the coolest 18 October (33.3°).
66.1°/48.4°
Average high / low
+1.5°
Above normal
4 / 4
Wet days / normal
2.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
72.2°
64.8°
+4.1°
17 October – 26 October
55.9°
60.1°
-2.3°
27 October – 5 November
at normal
56.2°
—
October records over 66 years
89.1°3 October 2025All-time high
21°22 October 1976All-time low
Climate normals and records are computed from the nearest reference point — Peoria (10 mi).
Thu, 0876° / 51°0
76 °
Oak Ridge, Thursday, 8 October
Clear. High 76°, low 51°.
Pressure30.12 inHg
Wind4.6 mph N
Humidity52%
Visibility6.2 mi
Dew point50°
Fri, 0978° / 53°0
78 °
Oak Ridge, Friday, 9 October
Partly cloudy. High 78°, low 53°.
Pressure30.12 inHg
Wind8 mph S
Humidity51%
Visibility6.2 mi
Dew point53°
Sat, 1080° / 60°0
80 °
Oak Ridge, Saturday, 10 October
Mostly clear. High 80°, low 60°.
Pressure30.09 inHg
Wind8 mph S
Humidity52%
Visibility6.2 mi
Dew point58°
Sun, 1168° / 58°0.22
68 °
Oak Ridge, Sunday, 11 October
Rain. High 68°, low 58°.
Pressure29.85 inHg
Wind7 mph NE
Humidity80%
Visibility—
Dew point57°
Mon, 1281° / 57°0.02
81 °
Oak Ridge, Monday, 12 October
Light rain. High 81°, low 57°.
Pressure29.77 inHg
Wind8.5 mph SW
Humidity58%
Visibility—
Dew point59°
Tue, 1361° / 52°0.17
61 °
Oak Ridge, Tuesday, 13 October
Light rain. High 61°, low 52°.
Pressure30.00 inHg
Wind13.7 mph N
Humidity63%
Visibility—
Dew point48°
Wed, 1463° / 45°0
63 °
Oak Ridge, Wednesday, 14 October
Light rain. High 63°, low 45°.
Pressure30.06 inHg
Wind20.3 mph SE
Humidity45%
Visibility—
Dew point37°
Thu, 1580° / 57°1.63
80 °
Oak Ridge, Thursday, 15 October
Heavy rain. High 80°, low 57°.
Pressure29.71 inHg
Wind18.6 mph S
Humidity62%
Visibility—
Dew point64°
Fri, 1654° / 44°0
54 °
Oak Ridge, Friday, 16 October
Clear. High 54°, low 44°.
Pressure30.12 inHg
Wind14.7 mph NW
Humidity49%
Visibility—
Dew point34°
Sat, 1745° / 37°0
45 °
Oak Ridge, Saturday, 17 October
Overcast. High 45°, low 37°.
Pressure30.27 inHg
Wind15.2 mph NW
Humidity61%
Visibility—
Dew point31°
Sun, 1852° / 33°0
52 °
Oak Ridge, Sunday, 18 October
Overcast. High 52°, low 33°.
Pressure30.27 inHg
Wind10.6 mph W
Humidity37%
Visibility—
Dew point23°
Mon, 1960° / 38°0
60 °
Oak Ridge, Monday, 19 October
Partly cloudy. High 60°, low 38°.
Pressure30.27 inHg
Wind9.7 mph S
Humidity35%
Visibility—
Dew point28°
Tue, 2063° / 44°0
63 °
Oak Ridge, Tuesday, 20 October
Overcast. High 63°, low 44°.
Pressure30.47 inHg
Wind6.5 mph E
Humidity33%
Visibility—
Dew point30°
Wed, 2159° / 46°0.2
59 °
Oak Ridge, Wednesday, 21 October
Rain. High 59°, low 46°.
Pressure30.33 inHg
Wind9.1 mph SW
Humidity39%
Visibility—
Dew point32°
Thu, 2257° / 45°0
57 °
Oak Ridge, Thursday, 22 October
Mostly clear. High 57°, low 45°.
Pressure30.12 inHg
Wind11.7 mph NW
Humidity45%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2361° / 45°0.12
61 °
Oak Ridge, Friday, 23 October
Climate normal for this date — 60-year average.
Average high61°
Average low45°
Average precipitation0.12 in
Chance of precipitation37%
Record high79° (1963)
Record low28° (1976)
Sat, 2459° / 45°0.14
59 °
Oak Ridge, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high59°
Average low45°
Average precipitation0.14 in
Chance of precipitation32%
Record high79° (1963)
Record low24° (1981)
Sun, 2558° / 44°0.11
58 °
Oak Ridge, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.11 in
Chance of precipitation27%
Record high75° (2011)
Record low27° (2013)
Mon, 2657° / 43°0.11
57 °
Oak Ridge, Monday, 26 October
Climate normal for this date — 60-year average.
Average high57°
Average low43°
Average precipitation0.11 in
Chance of precipitation32%
Record high80° (1963)
Record low24° (1962)
Tue, 2758° / 43°0.08
58 °
Oak Ridge, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.08 in
Chance of precipitation30%
Record high74° (2014)
Record low29° (1997)
Wed, 2857° / 42°0.04
57 °
Oak Ridge, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.04 in
Chance of precipitation20%
Record high74° (1999)
Record low25° (1976)
Thu, 2957° / 42°0.08
57 °
Oak Ridge, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.08 in
Chance of precipitation25%
Record high78° (2024)
Record low23° (1980)
Fri, 3059° / 43°0.11
59 °
Oak Ridge, Friday, 30 October
Climate normal for this date — 60-year average.
Average high59°
Average low43°
Average precipitation0.11 in
Chance of precipitation28%
Record high79° (1971)
Record low25° (1988)
Sat, 3158° / 43°0.17
58 °
Oak Ridge, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.17 in
Chance of precipitation42%
Record high74° (1974)
Record low24° (2019)
Sun, 0157° / 42°0.18
57 °
Oak Ridge, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.18 in
Chance of precipitation32%
Record high77° (2016)
Record low22° (2019)
Mon, 0255° / 41°0.08
55 °
Oak Ridge, Monday, 2 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.08 in
Chance of precipitation33%
Record high75° (1961)
Record low23° (1991)
Tue, 0354° / 40°0.09
54 °
Oak Ridge, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.09 in
Chance of precipitation23%
Record high74° (1964)
Record low17° (1991)
Wed, 0454° / 41°0.08
54 °
Oak Ridge, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.08 in
Chance of precipitation23%
Record high74° (1978)
Record low16° (1991)
Thu, 0553° / 39°0.13
53 °
Oak Ridge, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.13 in
Chance of precipitation25%
Record high74° (1978)
Record low19° (1991)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Oak Ridge, IL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Oak Ridge, IL since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.