Monthly outlook for Oak Forest, PA: average high 58.5°, average low 40°. That is 0.7° below the climate normal for October. Precipitation is expected on 5 days (about 0.5 inches), against a normal of 6 days and 2.0 inches. The warmest day looks like 14 October (81.1°), the coolest 24 October (30.7°).
58.5°/40°
Average high / low
−0.7°
Below normal
5 / 6
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
64.2°
60.9°
+1.8°
24 October – 2 November
49.1°
58.3°
-5.1°
3 November – 12 November
at normal
53.9°
—
October records over 66 years
90.7°3 October 2019All-time high
24.8°20 October 1972All-time low
Climate normals and records are computed from the nearest reference point — Dunkard (14 mi).
Thu, 1569° / 50°0.02
69 °
Oak Forest, Thursday, 15 October
Light rain. High 69°, low 50°.
Pressure30.12 inHg
Wind4.2 mph NE
Humidity70%
Visibility6.2 mi
Dew point57°
Fri, 1677° / 54°0.06
77 °
Oak Forest, Friday, 16 October
Light rain. High 77°, low 54°.
Pressure29.77 inHg
Wind18.3 mph SW
Humidity58%
Visibility6.2 mi
Dew point61°
Sat, 1752° / 40°0.06
52 °
Oak Forest, Saturday, 17 October
Light rain. High 52°, low 40°.
Pressure30.36 inHg
Wind12.5 mph N
Humidity56%
Visibility6.2 mi
Dew point34°
Sun, 1857° / 36°0
57 °
Oak Forest, Sunday, 18 October
Clear. High 57°, low 36°.
Pressure30.56 inHg
Wind4 mph E
Humidity39%
Visibility—
Dew point29°
Mon, 1964° / 39°0
64 °
Oak Forest, Monday, 19 October
Clear. High 64°, low 39°.
Pressure30.45 inHg
Wind4.7 mph S
Humidity33%
Visibility—
Dew point31°
Tue, 2065° / 49°0
65 °
Oak Forest, Tuesday, 20 October
Overcast. High 65°, low 49°.
Pressure30.27 inHg
Wind3.5 mph S
Humidity51%
Visibility—
Dew point44°
Wed, 2168° / 46°0
68 °
Oak Forest, Wednesday, 21 October
Clear. High 68°, low 46°.
Pressure30.12 inHg
Wind2.1 mph SW
Humidity46%
Visibility—
Dew point43°
Thu, 2260° / 44°0.01
60 °
Oak Forest, Thursday, 22 October
Light rain. High 60°, low 44°.
Pressure30.03 inHg
Wind11.1 mph N
Humidity84%
Visibility—
Dew point49°
Fri, 2348° / 33°0
48 °
Oak Forest, Friday, 23 October
Partly cloudy. High 48°, low 33°.
Pressure30.24 inHg
Wind11.2 mph N
Humidity47%
Visibility—
Dew point26°
Sat, 2453° / 31°0
53 °
Oak Forest, Saturday, 24 October
Clear. High 53°, low 31°.
Pressure30.12 inHg
Wind10.6 mph NW
Humidity43%
Visibility—
Dew point28°
Sun, 2549° / 34°0.04
49 °
Oak Forest, Sunday, 25 October
Light rain. High 49°, low 34°.
Pressure30.00 inHg
Wind9.1 mph SW
Humidity56%
Visibility—
Dew point31°
Mon, 2644° / 34°0.06
44 °
Oak Forest, Monday, 26 October
Light rain. High 44°, low 34°.
Pressure30.00 inHg
Wind11.9 mph W
Humidity60%
Visibility—
Dew point30°
Tue, 2750° / 32°0
50 °
Oak Forest, Tuesday, 27 October
Overcast. High 50°, low 32°.
Pressure29.97 inHg
Wind7.7 mph W
Humidity41%
Visibility—
Dew point24°
Wed, 2850° / 32°0
50 °
Oak Forest, Wednesday, 28 October
Clear. High 50°, low 32°.
Pressure29.94 inHg
Wind9.1 mph NW
Humidity51%
Visibility—
Dew point30°
Thu, 2950° / 32°0
50 °
Oak Forest, Thursday, 29 October
Partly cloudy. High 50°, low 32°.
Pressure29.94 inHg
Wind5.8 mph N
Humidity54%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3058° / 40°0.13
58 °
Oak Forest, Friday, 30 October
Climate normal for this date — 60-year average.
Average high58°
Average low40°
Average precipitation0.13 in
Chance of precipitation30%
Record high74° (1971)
Record low28° (2008)
Sat, 3159° / 43°0.09
59 °
Oak Forest, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high59°
Average low43°
Average precipitation0.09 in
Chance of precipitation30%
Record high78° (2024)
Record low29° (1975)
Sun, 0159° / 44°0.11
59 °
Oak Forest, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.11 in
Chance of precipitation35%
Record high74° (2018)
Record low29° (1993)
Mon, 0258° / 43°0.13
58 °
Oak Forest, Monday, 2 November
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.13 in
Chance of precipitation38%
Record high76° (2016)
Record low23° (1993)
Tue, 0357° / 41°0.09
57 °
Oak Forest, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high57°
Average low41°
Average precipitation0.09 in
Chance of precipitation37%
Record high78° (1961)
Record low27° (2006)
Wed, 0456° / 40°0.14
56 °
Oak Forest, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.14 in
Chance of precipitation30%
Record high76° (2003)
Record low25° (1991)
Thu, 0555° / 41°0.12
55 °
Oak Forest, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.12 in
Chance of precipitation37%
Record high77° (2024)
Record low21° (1991)
Fri, 0655° / 40°0.07
55 °
Oak Forest, Friday, 6 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.07 in
Chance of precipitation38%
Record high75° (2022)
Record low25° (1967)
Sat, 0754° / 39°0.15
54 °
Oak Forest, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.15 in
Chance of precipitation38%
Record high72° (1996)
Record low26° (1967)
Sun, 0853° / 38°0.13
53 °
Oak Forest, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.13 in
Chance of precipitation33%
Record high73° (2020)
Record low24° (1971)
Mon, 0955° / 39°0.11
55 °
Oak Forest, Monday, 9 November
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.11 in
Chance of precipitation35%
Record high74° (1975)
Record low23° (1976)
Tue, 1054° / 38°0.16
54 °
Oak Forest, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.16 in
Chance of precipitation42%
Record high76° (2020)
Record low24° (2017)
Wed, 1152° / 38°0.17
52 °
Oak Forest, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.17 in
Chance of precipitation40%
Record high71° (2021)
Record low20° (2017)
Thu, 1251° / 36°0.16
51 °
Oak Forest, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.16 in
Chance of precipitation43%
Record high67° (1982)
Record low21° (1987)
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 Forest, PA 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 Forest, PA 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.