Monthly outlook for Harmony Hill, PA: average high 62.5°, average low 45.8°. That is 0.2° below the climate normal for October. Precipitation is expected on 3 days (about 3.6 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 13 October (75.4°), the coolest 19 October (31.9°).
62.5°/45.8°
Average high / low
−0.2°
Below normal
3 / 4
Wet days / normal
3.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
64.2°
63.9°
+0.1°
20 October – 29 October
59.7°
60.4°
-0.4°
30 October – 8 November
at normal
57.5°
—
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 (4 mi).
Sun, 1163° / 51°1.94
63 °
Harmony Hill, Sunday, 11 October
Heavy rain. High 63°, low 51°.
Pressure30.21 inHg
Wind12.5 mph E
Humidity98%
Visibility1.3 mi
Dew point59°
Mon, 1271° / 53°1.2
71 °
Harmony Hill, Monday, 12 October
Heavy rain. High 71°, low 53°.
Pressure29.80 inHg
Wind13.2 mph N
Humidity82%
Visibility6.2 mi
Dew point60°
Tue, 1375° / 56°0
75 °
Harmony Hill, Tuesday, 13 October
Mostly clear. High 75°, low 56°.
Pressure29.91 inHg
Wind6.9 mph SW
Humidity66%
Visibility6.2 mi
Dew point61°
Wed, 1474° / 61°0
74 °
Harmony Hill, Wednesday, 14 October
Mostly clear. High 74°, low 61°.
Pressure29.88 inHg
Wind11.7 mph NW
Humidity65%
Visibility6.2 mi
Dew point61°
Thu, 1561° / 50°0
61 °
Harmony Hill, Thursday, 15 October
Clear. High 61°, low 50°.
Pressure30.30 inHg
Wind9 mph N
Humidity58%
Visibility—
Dew point42°
Fri, 1668° / 48°0.42
68 °
Harmony Hill, Friday, 16 October
Rain. High 68°, low 48°.
Pressure30.00 inHg
Wind14.3 mph S
Humidity96%
Visibility—
Dew point52°
Sat, 1758° / 43°0.04
58 °
Harmony Hill, Saturday, 17 October
Light rain. High 58°, low 43°.
Pressure29.91 inHg
Wind17 mph W
Humidity55%
Visibility—
Dew point37°
Sun, 1849° / 35°0
49 °
Harmony Hill, Sunday, 18 October
Partly cloudy. High 49°, low 35°.
Pressure30.18 inHg
Wind13.8 mph NW
Humidity55%
Visibility—
Dew point29°
Mon, 1951° / 32°0
51 °
Harmony Hill, Monday, 19 October
Partly cloudy. High 51°, low 32°.
Pressure30.53 inHg
Wind10 mph N
Humidity44%
Visibility—
Dew point23°
Tue, 2056° / 37°0
56 °
Harmony Hill, Tuesday, 20 October
Clear. High 56°, low 37°.
Pressure30.56 inHg
Wind4.3 mph NE
Humidity47%
Visibility—
Dew point29°
Wed, 2159° / 41°0
59 °
Harmony Hill, Wednesday, 21 October
Overcast. High 59°, low 41°.
Pressure30.50 inHg
Wind6.6 mph SE
Humidity58%
Visibility—
Dew point37°
Thu, 2264° / 49°0.03
64 °
Harmony Hill, Thursday, 22 October
Light rain. High 64°, low 49°.
Pressure30.21 inHg
Wind8.9 mph SW
Humidity70%
Visibility—
Dew point49°
Fri, 2366° / 47°0
66 °
Harmony Hill, Friday, 23 October
Clear. High 66°, low 47°.
Pressure30.06 inHg
Wind12 mph W
Humidity63%
Visibility—
Dew point45°
Sat, 2457° / 44°0
57 °
Harmony Hill, Saturday, 24 October
Clear. High 57°, low 44°.
Pressure30.09 inHg
Wind13.8 mph NW
Humidity60%
Visibility—
Dew point38°
Sun, 2557° / 40°0
57 °
Harmony Hill, Sunday, 25 October
Overcast. High 57°, low 40°.
Pressure30.18 inHg
Wind7.6 mph SE
Humidity52%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2660° / 46°0.11
60 °
Harmony Hill, 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 °
Harmony Hill, 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 °
Harmony Hill, 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 °
Harmony Hill, 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 °
Harmony Hill, 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 °
Harmony Hill, 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 °
Harmony Hill, 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 °
Harmony Hill, 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 °
Harmony Hill, 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 °
Harmony Hill, 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 °
Harmony Hill, 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 °
Harmony Hill, 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)
Sat, 0755° / 42°0.08
55 °
Harmony Hill, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high55°
Average low42°
Average precipitation0.08 in
Chance of precipitation22%
Record high75° (2024)
Record low27° (1962)
Sun, 0855° / 41°0.12
55 °
Harmony Hill, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.12 in
Chance of precipitation22%
Record high74° (2020)
Record low26° (1960)
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 Harmony Hill, 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 Harmony Hill, 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.