Monthly outlook for Mainland, PA: average high 61.6°, average low 43.4°. That is 0.7° below the climate normal for October. Precipitation is expected on 4 days (about 1.7 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 14 October (77.5°), the coolest 19 October (32.2°).
61.6°/43.4°
Average high / low
−0.7°
Below normal
4 / 4
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
64.2°
63.8°
+0.3°
21 October – 30 October
57.1°
60.3°
-1.8°
31 October – 9 November
at normal
57.4°
—
October records over 66 years
92.1°2 October 2019All-time high
27.9°24 October 1969All-time low
Climate normals and records are computed from the nearest reference point — Lansdale (4 mi).
Mon, 1273° / 51°0.15
73 °
Mainland, Monday, 12 October
Rain. High 73°, low 51°.
Pressure29.80 inHg
Wind12.1 mph N
Humidity71%
Visibility6.2 mi
Dew point58°
Tue, 1375° / 54°0
75 °
Mainland, Tuesday, 13 October
Clear. High 75°, low 54°.
Pressure29.97 inHg
Wind5.2 mph S
Humidity73%
Visibility6.2 mi
Dew point62°
Wed, 1477° / 62°0.09
77 °
Mainland, Wednesday, 14 October
Light rain. High 77°, low 62°.
Pressure29.88 inHg
Wind11.3 mph W
Humidity67%
Visibility6.2 mi
Dew point64°
Thu, 1563° / 48°0
63 °
Mainland, Thursday, 15 October
Overcast. High 63°, low 48°.
Pressure30.21 inHg
Wind11.9 mph N
Humidity56%
Visibility—
Dew point43°
Fri, 1669° / 44°0.02
69 °
Mainland, Friday, 16 October
Light rain. High 69°, low 44°.
Pressure30.00 inHg
Wind14.6 mph SW
Humidity68%
Visibility—
Dew point41°
Sat, 1768° / 43°0.04
68 °
Mainland, Saturday, 17 October
Light rain. High 68°, low 43°.
Pressure29.85 inHg
Wind14 mph NW
Humidity78%
Visibility—
Dew point44°
Sun, 1847° / 35°0
47 °
Mainland, Sunday, 18 October
Clear. High 47°, low 35°.
Pressure30.39 inHg
Wind16.8 mph N
Humidity38%
Visibility—
Dew point17°
Mon, 1951° / 32°0
51 °
Mainland, Monday, 19 October
Clear. High 51°, low 32°.
Pressure30.65 inHg
Wind7 mph N
Humidity36%
Visibility—
Dew point18°
Tue, 2056° / 36°0
56 °
Mainland, Tuesday, 20 October
Mostly clear. High 56°, low 36°.
Pressure30.53 inHg
Wind3.5 mph W
Humidity41%
Visibility—
Dew point25°
Wed, 2158° / 40°0
58 °
Mainland, Wednesday, 21 October
Clear. High 58°, low 40°.
Pressure30.42 inHg
Wind4.6 mph SW
Humidity45%
Visibility—
Dew point31°
Thu, 2262° / 43°0
62 °
Mainland, Thursday, 22 October
Overcast. High 62°, low 43°.
Pressure30.21 inHg
Wind10.6 mph SW
Humidity56%
Visibility—
Dew point38°
Fri, 2363° / 44°0
63 °
Mainland, Friday, 23 October
Clear. High 63°, low 44°.
Pressure30.03 inHg
Wind12 mph NW
Humidity61%
Visibility—
Dew point44°
Sat, 2450° / 37°0
50 °
Mainland, Saturday, 24 October
Clear. High 50°, low 37°.
Pressure30.18 inHg
Wind14 mph NW
Humidity51%
Visibility—
Dew point29°
Sun, 2552° / 33°0.01
52 °
Mainland, Sunday, 25 October
Light rain. High 52°, low 33°.
Pressure30.39 inHg
Wind8.9 mph W
Humidity55%
Visibility—
Dew point29°
Mon, 2657° / 40°0
57 °
Mainland, Monday, 26 October
Mostly clear. High 57°, low 40°.
Pressure30.50 inHg
Wind4 mph SW
Humidity64%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2760° / 46°0.19
60 °
Mainland, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.19 in
Chance of precipitation30%
Record high80° (1963)
Record low31° (1976)
Wed, 2860° / 45°0.14
60 °
Mainland, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high60°
Average low45°
Average precipitation0.14 in
Chance of precipitation27%
Record high79° (2023)
Record low29° (1976)
Thu, 2958° / 43°0.22
58 °
Mainland, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.22 in
Chance of precipitation25%
Record high75° (1984)
Record low30° (1965)
Fri, 3058° / 42°0.09
58 °
Mainland, Friday, 30 October
Climate normal for this date — 60-year average.
Average high58°
Average low42°
Average precipitation0.09 in
Chance of precipitation22%
Record high78° (2016)
Record low32° (2011)
Sat, 3159° / 43°0.06
59 °
Mainland, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high59°
Average low43°
Average precipitation0.06 in
Chance of precipitation18%
Record high82° (2024)
Record low30° (2011)
Sun, 0160° / 45°0.09
60 °
Mainland, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high60°
Average low45°
Average precipitation0.09 in
Chance of precipitation27%
Record high78° (1974)
Record low34° (1983)
Mon, 0260° / 45°0.11
60 °
Mainland, Monday, 2 November
Climate normal for this date — 60-year average.
Average high60°
Average low45°
Average precipitation0.11 in
Chance of precipitation30%
Record high76° (1971)
Record low29° (2023)
Tue, 0359° / 44°0.07
59 °
Mainland, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.07 in
Chance of precipitation20%
Record high76° (2003)
Record low32° (1980)
Wed, 0458° / 43°0.07
58 °
Mainland, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.07 in
Chance of precipitation20%
Record high74° (1974)
Record low31° (2021)
Thu, 0557° / 43°0.12
57 °
Mainland, 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 low29° (1991)
Fri, 0656° / 42°0.08
56 °
Mainland, Friday, 6 November
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.08 in
Chance of precipitation28%
Record high80° (2024)
Record low28° (1991)
Sat, 0755° / 41°0.07
55 °
Mainland, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.07 in
Chance of precipitation23%
Record high73° (2024)
Record low27° (1962)
Sun, 0855° / 40°0.12
55 °
Mainland, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.12 in
Chance of precipitation23%
Record high73° (2020)
Record low26° (1960)
Mon, 0955° / 40°0.09
55 °
Mainland, Monday, 9 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.09 in
Chance of precipitation32%
Record high74° (1975)
Record low22° (2019)
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 Mainland, 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 Mainland, 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.