Monthly outlook for Mount Joy, PA: average high 62°, average low 44.1°. That is 0.7° below the climate normal for October. Precipitation is expected on 3 days (about 2.6 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 13 October (76.1°), the coolest 19 October (29.9°).
62°/44.1°
Average high / low
−0.7°
Below normal
3 / 4
Wet days / normal
2.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
64.1°
64.2°
-0.1°
20 October – 29 October
58.7°
60.7°
-1.2°
30 October – 8 November
at normal
57.7°
—
October records over 66 years
90.5°2 October 2019All-time high
27.7°24 October 1969All-time low
Climate normals and records are computed from the nearest reference point — Lancaster (12 mi).
Sun, 1164° / 51°1.83
64 °
Mount Joy, Sunday, 11 October
Heavy rain. High 64°, low 51°.
Pressure30.18 inHg
Wind11.6 mph E
Humidity97%
Visibility1.3 mi
Dew point59°
Mon, 1272° / 51°0.13
72 °
Mount Joy, Monday, 12 October
Rain. High 72°, low 51°.
Pressure29.83 inHg
Wind9.7 mph N
Humidity77%
Visibility6.2 mi
Dew point59°
Tue, 1376° / 55°0
76 °
Mount Joy, Tuesday, 13 October
Mostly clear. High 76°, low 55°.
Pressure29.91 inHg
Wind5.7 mph SW
Humidity68%
Visibility6.2 mi
Dew point62°
Wed, 1474° / 61°0
74 °
Mount Joy, Wednesday, 14 October
Partly cloudy. High 74°, low 61°.
Pressure29.91 inHg
Wind11.8 mph NW
Humidity63%
Visibility6.2 mi
Dew point59°
Thu, 1561° / 49°0
61 °
Mount Joy, Thursday, 15 October
Clear. High 61°, low 49°.
Pressure30.30 inHg
Wind10.2 mph N
Humidity59%
Visibility—
Dew point43°
Fri, 1669° / 47°0.65
69 °
Mount Joy, Friday, 16 October
Rain. High 69°, low 47°.
Pressure29.97 inHg
Wind16.4 mph SW
Humidity97%
Visibility—
Dew point52°
Sat, 1756° / 39°0
56 °
Mount Joy, Saturday, 17 October
Overcast. High 56°, low 39°.
Pressure29.91 inHg
Wind18.2 mph W
Humidity56%
Visibility—
Dew point36°
Sun, 1847° / 32°0
47 °
Mount Joy, Sunday, 18 October
Mostly clear. High 47°, low 32°.
Pressure30.21 inHg
Wind16 mph N
Humidity56%
Visibility—
Dew point29°
Mon, 1950° / 30°0
50 °
Mount Joy, Monday, 19 October
Mostly clear. High 50°, low 30°.
Pressure30.53 inHg
Wind9.7 mph NW
Humidity46%
Visibility—
Dew point23°
Tue, 2056° / 34°0
56 °
Mount Joy, Tuesday, 20 October
Clear. High 56°, low 34°.
Pressure30.59 inHg
Wind3.4 mph SE
Humidity49%
Visibility—
Dew point29°
Wed, 2158° / 37°0
58 °
Mount Joy, Wednesday, 21 October
Overcast. High 58°, low 37°.
Pressure30.50 inHg
Wind9 mph SE
Humidity59%
Visibility—
Dew point35°
Thu, 2262° / 48°0.01
62 °
Mount Joy, Thursday, 22 October
Light rain. High 62°, low 48°.
Pressure30.21 inHg
Wind9.8 mph S
Humidity74%
Visibility—
Dew point50°
Fri, 2365° / 45°0
65 °
Mount Joy, Friday, 23 October
Clear. High 65°, low 45°.
Pressure30.06 inHg
Wind14.1 mph W
Humidity60%
Visibility—
Dew point44°
Sat, 2456° / 41°0
56 °
Mount Joy, Saturday, 24 October
Clear. High 56°, low 41°.
Pressure30.12 inHg
Wind16.3 mph NW
Humidity58%
Visibility—
Dew point36°
Sun, 2556° / 37°0
56 °
Mount Joy, Sunday, 25 October
Overcast. High 56°, low 37°.
Pressure30.18 inHg
Wind12.1 mph SE
Humidity56%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2660° / 46°0.11
60 °
Mount Joy, Monday, 26 October
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.11 in
Chance of precipitation35%
Record high77° (2023)
Record low32° (1962)
Tue, 2760° / 46°0.19
60 °
Mount Joy, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.19 in
Chance of precipitation28%
Record high80° (1963)
Record low31° (1976)
Wed, 2860° / 45°0.13
60 °
Mount Joy, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high60°
Average low45°
Average precipitation0.13 in
Chance of precipitation25%
Record high79° (1984)
Record low29° (1976)
Thu, 2958° / 44°0.23
58 °
Mount Joy, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.23 in
Chance of precipitation25%
Record high74° (1984)
Record low30° (1965)
Fri, 3058° / 42°0.1
58 °
Mount Joy, Friday, 30 October
Climate normal for this date — 60-year average.
Average high58°
Average low42°
Average precipitation0.1 in
Chance of precipitation25%
Record high78° (2016)
Record low31° (2011)
Sat, 3159° / 44°0.05
59 °
Mount Joy, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.05 in
Chance of precipitation20%
Record high81° (2024)
Record low29° (1988)
Sun, 0160° / 46°0.07
60 °
Mount Joy, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.07 in
Chance of precipitation27%
Record high78° (1974)
Record low35° (2011)
Mon, 0260° / 46°0.11
60 °
Mount Joy, Monday, 2 November
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.11 in
Chance of precipitation28%
Record high78° (1971)
Record low31° (1965)
Tue, 0359° / 44°0.07
59 °
Mount Joy, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.07 in
Chance of precipitation28%
Record high77° (2003)
Record low32° (1996)
Wed, 0457° / 43°0.07
57 °
Mount Joy, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high57°
Average low43°
Average precipitation0.07 in
Chance of precipitation22%
Record high75° (1987)
Record low29° (2021)
Thu, 0557° / 43°0.1
57 °
Mount Joy, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high57°
Average low43°
Average precipitation0.1 in
Chance of precipitation28%
Record high74° (1961)
Record low27° (1991)
Fri, 0656° / 42°0.07
56 °
Mount Joy, Friday, 6 November
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.07 in
Chance of precipitation27%
Record high80° (2024)
Record low27° (2021)
Sat, 0755° / 42°0.07
55 °
Mount Joy, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high55°
Average low42°
Average precipitation0.07 in
Chance of precipitation22%
Record high72° (2023)
Record low28° (2021)
Sun, 0855° / 41°0.15
55 °
Mount Joy, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.15 in
Chance of precipitation18%
Record high74° (1975)
Record low27° (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 Mount Joy, 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 Mount Joy, 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.