Monthly outlook for Northbrook, PA: average high 68°, average low 50.7°. That is 2.4° above the climate normal for October. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 13 October (77.7°), the coolest 18 October (42.5°).
68°/50.7°
Average high / low
+2.4°
Above normal
4 / 4
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
71.7°
64.9°
+3.8°
18 October – 27 October
61.7°
61.1°
+0.3°
28 October – 6 November
at normal
58.2°
—
October records over 66 years
91.2°2 October 2019All-time high
27.9°24 October 1969All-time low
Climate normals and records are computed from the nearest reference point — West Chester (5 mi).
Fri, 0974° / 46°0
74 °
Northbrook, Friday, 9 October
Clear. High 74°, low 46°.
Pressure30.18 inHg
Wind10 mph W
Humidity37%
Visibility6.2 mi
Dew point42°
Sat, 1073° / 47°0
73 °
Northbrook, Saturday, 10 October
Overcast. High 73°, low 47°.
Pressure30.45 inHg
Wind6.8 mph E
Humidity38%
Visibility6.2 mi
Dew point42°
Sun, 1162° / 55°0.32
62 °
Northbrook, Sunday, 11 October
Rain. High 62°, low 55°.
Pressure30.24 inHg
Wind13.1 mph E
Humidity97%
Visibility3.5 mi
Dew point59°
Mon, 1271° / 59°0.2
71 °
Northbrook, Monday, 12 October
Light rain. High 71°, low 59°.
Pressure29.74 inHg
Wind11.7 mph N
Humidity88%
Visibility6.2 mi
Dew point59°
Tue, 1378° / 58°0
78 °
Northbrook, Tuesday, 13 October
Clear. High 78°, low 58°.
Pressure29.83 inHg
Wind10 mph SW
Humidity69%
Visibility—
Dew point58°
Wed, 1469° / 52°0
69 °
Northbrook, Wednesday, 14 October
Clear. High 69°, low 52°.
Pressure29.91 inHg
Wind11.7 mph NW
Humidity68%
Visibility—
Dew point55°
Thu, 1566° / 48°0
66 °
Northbrook, Thursday, 15 October
Clear. High 66°, low 48°.
Pressure30.21 inHg
Wind6.6 mph SE
Humidity59%
Visibility—
Dew point43°
Fri, 1674° / 54°0
74 °
Northbrook, Friday, 16 October
Clear. High 74°, low 54°.
Pressure30.18 inHg
Wind10.8 mph SW
Humidity71%
Visibility—
Dew point55°
Sat, 1776° / 53°0
76 °
Northbrook, Saturday, 17 October
Overcast. High 76°, low 53°.
Pressure30.00 inHg
Wind18.6 mph NW
Humidity79%
Visibility—
Dew point65°
Sun, 1855° / 43°0
55 °
Northbrook, Sunday, 18 October
Clear. High 55°, low 43°.
Pressure30.50 inHg
Wind12.9 mph N
Humidity44%
Visibility—
Dew point28°
Mon, 1958° / 43°0
58 °
Northbrook, Monday, 19 October
Overcast. High 58°, low 43°.
Pressure30.45 inHg
Wind5.6 mph N
Humidity54%
Visibility—
Dew point36°
Tue, 2060° / 44°0
60 °
Northbrook, Tuesday, 20 October
Overcast. High 60°, low 44°.
Pressure30.56 inHg
Wind8.5 mph E
Humidity55%
Visibility—
Dew point38°
Wed, 2166° / 49°0
66 °
Northbrook, Wednesday, 21 October
Overcast. High 66°, low 49°.
Pressure30.33 inHg
Wind6.7 mph SW
Humidity68%
Visibility—
Dew point48°
Thu, 2266° / 55°0.07
66 °
Northbrook, Thursday, 22 October
Light rain. High 66°, low 55°.
Pressure30.18 inHg
Wind5.1 mph SW
Humidity65%
Visibility—
Dew point51°
Fri, 2365° / 54°0.16
65 °
Northbrook, Friday, 23 October
Rain. High 65°, low 54°.
Pressure30.09 inHg
Wind12.4 mph N
Humidity72%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2461° / 46°0.13
61 °
Northbrook, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high61°
Average low46°
Average precipitation0.13 in
Chance of precipitation28%
Record high78° (2001)
Record low28° (1969)
Sun, 2560° / 47°0.13
60 °
Northbrook, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high60°
Average low47°
Average precipitation0.13 in
Chance of precipitation30%
Record high76° (2021)
Record low33° (1962)
Mon, 2660° / 46°0.11
60 °
Northbrook, Monday, 26 October
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.11 in
Chance of precipitation33%
Record high80° (2023)
Record low33° (1962)
Tue, 2760° / 46°0.2
60 °
Northbrook, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.2 in
Chance of precipitation32%
Record high80° (1963)
Record low31° (1976)
Wed, 2859° / 45°0.13
59 °
Northbrook, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high59°
Average low45°
Average precipitation0.13 in
Chance of precipitation25%
Record high80° (2023)
Record low29° (1976)
Thu, 2958° / 44°0.25
58 °
Northbrook, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.25 in
Chance of precipitation25%
Record high75° (1984)
Record low30° (1965)
Fri, 3058° / 42°0.09
58 °
Northbrook, Friday, 30 October
Climate normal for this date — 60-year average.
Average high58°
Average low42°
Average precipitation0.09 in
Chance of precipitation22%
Record high77° (2016)
Record low30° (2011)
Sat, 3159° / 44°0.06
59 °
Northbrook, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.06 in
Chance of precipitation20%
Record high80° (2024)
Record low29° (2011)
Sun, 0160° / 45°0.09
60 °
Northbrook, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high60°
Average low45°
Average precipitation0.09 in
Chance of precipitation23%
Record high78° (1974)
Record low35° (2002)
Mon, 0260° / 46°0.1
60 °
Northbrook, Monday, 2 November
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.1 in
Chance of precipitation28%
Record high76° (1971)
Record low31° (2023)
Tue, 0359° / 44°0.07
59 °
Northbrook, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.07 in
Chance of precipitation22%
Record high76° (2003)
Record low32° (1996)
Wed, 0457° / 43°0.07
57 °
Northbrook, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high57°
Average low43°
Average precipitation0.07 in
Chance of precipitation20%
Record high74° (1974)
Record low30° (2006)
Thu, 0557° / 43°0.12
57 °
Northbrook, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high57°
Average low43°
Average precipitation0.12 in
Chance of precipitation28%
Record high75° (2022)
Record low28° (1991)
Fri, 0656° / 42°0.07
56 °
Northbrook, Friday, 6 November
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.07 in
Chance of precipitation27%
Record high78° (2024)
Record low28° (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 Northbrook, 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 Northbrook, 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.