Monthly outlook for Oak Forest, PA: average high 59.7°, average low 41.7°. That is 0.8° below the climate normal for October. Precipitation is expected on 4 days (about 2.2 inches), against a normal of 6 days and 1.8 inches. The warmest day looks like 13 October (79.7°), the coolest 18 October (27°).
59.7°/41.7°
Average high / low
−0.8°
Below normal
4 / 6
Wet days / normal
2.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
62.4°
62.4°
+0°
21 October – 30 October
55.2°
58.6°
-1.9°
31 October – 9 November
at normal
56°
—
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).
Mon, 1271° / 52°0.01
71 °
Oak Forest, Monday, 12 October
Light rain. High 71°, low 52°.
Pressure30.00 inHg
Wind6.8 mph NW
Humidity83%
Visibility6.2 mi
Dew point59°
Tue, 1380° / 59°0
80 °
Oak Forest, Tuesday, 13 October
Clear. High 80°, low 59°.
Pressure29.94 inHg
Wind11 mph SW
Humidity63%
Visibility6.2 mi
Dew point62°
Wed, 1479° / 61°0.37
79 °
Oak Forest, Wednesday, 14 October
Rain. High 79°, low 61°.
Pressure29.97 inHg
Wind10.3 mph SW
Humidity69%
Visibility6.2 mi
Dew point65°
Thu, 1561° / 50°0
61 °
Oak Forest, Thursday, 15 October
Partly cloudy. High 61°, low 50°.
Pressure30.27 inHg
Wind8.3 mph NE
Humidity57%
Visibility—
Dew point44°
Fri, 1666° / 52°0.18
66 °
Oak Forest, Friday, 16 October
Light rain. High 66°, low 52°.
Pressure30.00 inHg
Wind17.1 mph W
Humidity53%
Visibility—
Dew point46°
Sat, 1749° / 33°0.17
49 °
Oak Forest, Saturday, 17 October
Snow. High 49°, low 33°.
Pressure30.03 inHg
Wind13 mph W
Humidity72%
Visibility—
Dew point34°
Sun, 1844° / 27°0
44 °
Oak Forest, Sunday, 18 October
Partly cloudy. High 44°, low 27°.
Pressure30.56 inHg
Wind10.4 mph N
Humidity38%
Visibility—
Dew point18°
Mon, 1951° / 27°0
51 °
Oak Forest, Monday, 19 October
Overcast. High 51°, low 27°.
Pressure30.59 inHg
Wind3.1 mph NE
Humidity29%
Visibility—
Dew point17°
Tue, 2057° / 31°0
57 °
Oak Forest, Tuesday, 20 October
Partly cloudy. High 57°, low 31°.
Pressure30.45 inHg
Wind2.1 mph SE
Humidity31%
Visibility—
Dew point24°
Wed, 2159° / 35°0
59 °
Oak Forest, Wednesday, 21 October
Overcast. High 59°, low 35°.
Pressure30.30 inHg
Wind5.8 mph SW
Humidity38%
Visibility—
Dew point30°
Thu, 2262° / 40°0
62 °
Oak Forest, Thursday, 22 October
Partly cloudy. High 62°, low 40°.
Pressure30.09 inHg
Wind12.4 mph SW
Humidity41%
Visibility—
Dew point35°
Fri, 2354° / 42°0
54 °
Oak Forest, Friday, 23 October
Overcast. High 54°, low 42°.
Pressure30.15 inHg
Wind7.6 mph W
Humidity58%
Visibility—
Dew point39°
Sat, 2447° / 36°0
47 °
Oak Forest, Saturday, 24 October
Light rain. High 47°, low 36°.
Pressure30.27 inHg
Wind7.9 mph NW
Humidity55%
Visibility—
Dew point30°
Sun, 2554° / 33°0
54 °
Oak Forest, Sunday, 25 October
Mostly clear. High 54°, low 33°.
Pressure30.30 inHg
Wind8.8 mph SW
Humidity46%
Visibility—
Dew point31°
Mon, 2655° / 39°0.01
55 °
Oak Forest, Monday, 26 October
Light rain. High 55°, low 39°.
Pressure30.39 inHg
Wind6 mph S
Humidity59%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2758° / 43°0.13
58 °
Oak Forest, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.13 in
Chance of precipitation38%
Record high77° (1963)
Record low26° (1962)
Wed, 2858° / 43°0.11
58 °
Oak Forest, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.11 in
Chance of precipitation35%
Record high74° (2014)
Record low26° (1976)
Thu, 2957° / 41°0.18
57 °
Oak Forest, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high57°
Average low41°
Average precipitation0.18 in
Chance of precipitation35%
Record high74° (2024)
Record low26° (1965)
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)
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.