Monthly outlook for Atglen, PA: average high 64.1°, average low 48.3°. That is 0.6° above the climate normal for October. Precipitation is expected on 3 days (about 2.1 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 13 October (77.7°), the coolest 18 October (27.8°).
64.1°/48.3°
Average high / low
+0.6°
Above normal
3 / 4
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
63.9°
63.9°
-0°
21 October – 30 October
64.3°
60.5°
+2.1°
31 October – 9 November
at normal
57.6°
—
October records over 66 years
90.5°2 October 2019All-time high
28°24 October 1969All-time low
Climate normals and records are computed from the nearest reference point — Coatesville (9 mi).
Mon, 1273° / 52°0.15
73 °
Atglen, Monday, 12 October
Rain. High 73°, low 52°.
Pressure29.85 inHg
Wind11.3 mph NW
Humidity67%
Visibility6.2 mi
Dew point57°
Tue, 1378° / 55°0
78 °
Atglen, Tuesday, 13 October
Clear. High 78°, low 55°.
Pressure29.94 inHg
Wind6.6 mph SW
Humidity68%
Visibility6.2 mi
Dew point63°
Wed, 1476° / 62°0
76 °
Atglen, Wednesday, 14 October
Overcast. High 76°, low 62°.
Pressure29.91 inHg
Wind13 mph W
Humidity70%
Visibility6.2 mi
Dew point64°
Thu, 1566° / 56°0
66 °
Atglen, Thursday, 15 October
Overcast. High 66°, low 56°.
Pressure30.21 inHg
Wind4.4 mph NE
Humidity64%
Visibility6.2 mi
Dew point52°
Fri, 1671° / 54°0.52
71 °
Atglen, Friday, 16 October
Rain. High 71°, low 54°.
Pressure29.68 inHg
Wind21.2 mph NW
Humidity85%
Visibility—
Dew point64°
Sat, 1749° / 33°0
49 °
Atglen, Saturday, 17 October
Clear. High 49°, low 33°.
Pressure30.18 inHg
Wind23.5 mph NW
Humidity53%
Visibility—
Dew point29°
Sun, 1847° / 28°0
47 °
Atglen, Sunday, 18 October
Clear. High 47°, low 28°.
Pressure30.65 inHg
Wind14.5 mph NW
Humidity46%
Visibility—
Dew point20°
Mon, 1958° / 34°0
58 °
Atglen, Monday, 19 October
Clear. High 58°, low 34°.
Pressure30.59 inHg
Wind9.7 mph SW
Humidity49%
Visibility—
Dew point29°
Tue, 2061° / 41°0
61 °
Atglen, Tuesday, 20 October
Overcast. High 61°, low 41°.
Pressure30.47 inHg
Wind7.1 mph NW
Humidity60%
Visibility—
Dew point40°
Wed, 2162° / 46°0.01
62 °
Atglen, Wednesday, 21 October
Light rain. High 62°, low 46°.
Pressure30.59 inHg
Wind11.5 mph SE
Humidity73%
Visibility—
Dew point47°
Thu, 2262° / 50°0
62 °
Atglen, Thursday, 22 October
Overcast. High 62°, low 50°.
Pressure30.62 inHg
Wind11 mph E
Humidity74%
Visibility—
Dew point48°
Fri, 2363° / 48°0
63 °
Atglen, Friday, 23 October
Overcast. High 63°, low 48°.
Pressure30.47 inHg
Wind5.6 mph S
Humidity81%
Visibility—
Dew point51°
Sat, 2469° / 57°0
69 °
Atglen, Saturday, 24 October
Overcast. High 69°, low 57°.
Pressure30.21 inHg
Wind11.3 mph S
Humidity79%
Visibility—
Dew point57°
Sun, 2572° / 58°0
72 °
Atglen, Sunday, 25 October
Overcast. High 72°, low 58°.
Pressure29.94 inHg
Wind13 mph NW
Humidity82%
Visibility—
Dew point59°
Mon, 2658° / 43°0
58 °
Atglen, Monday, 26 October
Partly cloudy. High 58°, low 43°.
Pressure29.94 inHg
Wind13.6 mph NW
Humidity64%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2760° / 46°0.21
60 °
Atglen, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.21 in
Chance of precipitation28%
Record high80° (1963)
Record low31° (1976)
Wed, 2860° / 45°0.13
60 °
Atglen, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high60°
Average low45°
Average precipitation0.13 in
Chance of precipitation25%
Record high80° (2023)
Record low29° (1976)
Thu, 2958° / 44°0.25
58 °
Atglen, 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° / 43°0.1
58 °
Atglen, Friday, 30 October
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.1 in
Chance of precipitation23%
Record high78° (2016)
Record low31° (2011)
Sat, 3159° / 44°0.05
59 °
Atglen, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.05 in
Chance of precipitation20%
Record high80° (2024)
Record low31° (2011)
Sun, 0160° / 46°0.09
60 °
Atglen, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.09 in
Chance of precipitation27%
Record high78° (1974)
Record low35° (2002)
Mon, 0260° / 46°0.1
60 °
Atglen, Monday, 2 November
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.1 in
Chance of precipitation28%
Record high77° (1971)
Record low31° (2023)
Tue, 0360° / 44°0.07
60 °
Atglen, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high60°
Average low44°
Average precipitation0.07 in
Chance of precipitation23%
Record high77° (2003)
Record low32° (1996)
Wed, 0458° / 43°0.07
58 °
Atglen, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.07 in
Chance of precipitation22%
Record high74° (1974)
Record low31° (2006)
Thu, 0557° / 43°0.12
57 °
Atglen, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high57°
Average low43°
Average precipitation0.12 in
Chance of precipitation28%
Record high74° (1961)
Record low28° (1991)
Fri, 0656° / 43°0.07
56 °
Atglen, Friday, 6 November
Climate normal for this date — 60-year average.
Average high56°
Average low43°
Average precipitation0.07 in
Chance of precipitation25%
Record high80° (2024)
Record low28° (1991)
Sat, 0756° / 42°0.07
56 °
Atglen, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.07 in
Chance of precipitation22%
Record high73° (2024)
Record low28° (1962)
Sun, 0856° / 41°0.13
56 °
Atglen, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.13 in
Chance of precipitation20%
Record high74° (2020)
Record low27° (1960)
Mon, 0956° / 41°0.1
56 °
Atglen, Monday, 9 November
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.1 in
Chance of precipitation28%
Record high75° (1975)
Record low23° (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 Atglen, 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 Atglen, 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.