Monthly outlook for Mount Joy, PA: average high 62°, average low 44.3°. That is 0.7° below the climate normal for October. Precipitation is expected on 5 days (about 3.7 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 13 October (77.5°), the coolest 20 October (30.8°).
62°/44.3°
Average high / low
−0.7°
Below normal
5 / 4
Wet days / normal
3.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
65.4°
64.2°
+0.7°
20 October – 29 October
56.3°
60.7°
-2.5°
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, 1165° / 52°2.09
65 °
Mount Joy, Sunday, 11 October
Heavy rain. High 65°, low 52°.
Pressure30.15 inHg
Wind14.3 mph E
Humidity96%
Visibility1.6 mi
Dew point60°
Mon, 1272° / 53°0.83
72 °
Mount Joy, Monday, 12 October
Heavy rain. High 72°, low 53°.
Pressure29.83 inHg
Wind11.3 mph N
Humidity71%
Visibility6.2 mi
Dew point59°
Tue, 1378° / 55°0
78 °
Mount Joy, Tuesday, 13 October
Clear. High 78°, low 55°.
Pressure29.91 inHg
Wind7.6 mph S
Humidity68%
Visibility6.2 mi
Dew point63°
Wed, 1477° / 64°0.31
77 °
Mount Joy, Wednesday, 14 October
Rain. High 77°, low 64°.
Pressure29.91 inHg
Wind10.9 mph W
Humidity70%
Visibility6.2 mi
Dew point64°
Thu, 1564° / 50°0
64 °
Mount Joy, Thursday, 15 October
Overcast. High 64°, low 50°.
Pressure30.24 inHg
Wind11.9 mph N
Humidity61%
Visibility—
Dew point47°
Fri, 1670° / 51°0.24
70 °
Mount Joy, Friday, 16 October
Light rain. High 70°, low 51°.
Pressure29.97 inHg
Wind9.4 mph SW
Humidity93%
Visibility—
Dew point55°
Sat, 1761° / 46°0.27
61 °
Mount Joy, Saturday, 17 October
Light rain. High 61°, low 46°.
Pressure29.94 inHg
Wind10.5 mph NW
Humidity89%
Visibility—
Dew point49°
Sun, 1850° / 37°0
50 °
Mount Joy, Sunday, 18 October
Clear. High 50°, low 37°.
Pressure30.12 inHg
Wind17.8 mph NW
Humidity54%
Visibility—
Dew point31°
Mon, 1948° / 33°0
48 °
Mount Joy, Monday, 19 October
Clear. High 48°, low 33°.
Pressure30.59 inHg
Wind15.8 mph N
Humidity44%
Visibility—
Dew point22°
Tue, 2050° / 31°0
50 °
Mount Joy, Tuesday, 20 October
Overcast. High 50°, low 31°.
Pressure30.62 inHg
Wind5.3 mph N
Humidity45%
Visibility—
Dew point22°
Wed, 2154° / 34°0
54 °
Mount Joy, Wednesday, 21 October
Clear. High 54°, low 34°.
Pressure30.53 inHg
Wind3.4 mph SE
Humidity48%
Visibility—
Dew point28°
Thu, 2257° / 36°0
57 °
Mount Joy, Thursday, 22 October
Clear. High 57°, low 36°.
Pressure30.59 inHg
Wind5.8 mph SE
Humidity54%
Visibility—
Dew point33°
Fri, 2359° / 39°0
59 °
Mount Joy, Friday, 23 October
Clear. High 59°, low 39°.
Pressure30.45 inHg
Wind7 mph SE
Humidity66%
Visibility—
Dew point40°
Sat, 2459° / 41°0
59 °
Mount Joy, Saturday, 24 October
Mostly clear. High 59°, low 41°.
Pressure30.33 inHg
Wind7.9 mph E
Humidity63%
Visibility—
Dew point39°
Sun, 2559° / 41°0
59 °
Mount Joy, Sunday, 25 October
Overcast. High 59°, low 41°.
Pressure30.21 inHg
Wind14 mph E
Humidity63%
Visibility—
Dew point39°
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.