As of 11:25 EDT

Weather in Caln, PA

70°

Caln, Thursday, 8 October, 11:25

Clear. Feels like 70°. High 73°, low 53°.

Pressure29.91 inHg

Wind12.7 mph NW

Humidity57%

Visibility6.2 mi

Dew point54°

See detailed hourly forecast

Monthly outlook for Caln, PA: average high 64.8°, average low 48.9°. That is 0.4° above the climate normal for October. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 13 October (74°), the coolest 18 October (36.3°).

64.8°/48.9°

Average high / low

+0.4°

Above normal

3 / 4

Wet days / normal

0.8 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 October – 17 October	67.3°	65.3°	+1.1°
18 October – 27 October	60.7°	61.5°	-0.4°
28 October – 6 November	at normal	58.6°	—

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 (3 mi).

Fri, 0972° / 44°

72 °

Caln, Friday, 9 October

Clear. High 72°, low 44°.

Pressure30.18 inHg

Wind8.9 mph W

Humidity45%

Visibility6.2 mi

Dew point45°

Sat, 1070° / 47°

70 °

Caln, Saturday, 10 October

Overcast. High 70°, low 47°.

Pressure30.47 inHg

Wind6 mph E

Humidity42%

Visibility6.2 mi

Dew point43°

Sun, 1161° / 57°

0.42

61 °

Caln, Sunday, 11 October

Rain. High 61°, low 57°.

Pressure30.30 inHg

Wind10.7 mph E

Humidity98%

Visibility2.5 mi

Dew point58°

Mon, 1271° / 59°

0.1

71 °

Caln, Monday, 12 October

Light rain. High 71°, low 59°.

Pressure29.80 inHg

Wind10 mph NE

Humidity93%

Visibility—

Dew point60°

Tue, 1374° / 59°

0.03

74 °

Caln, Tuesday, 13 October

Light rain. High 74°, low 59°.

Pressure29.83 inHg

Wind13.6 mph W

Humidity78%

Visibility—

Dew point60°

Wed, 1461° / 47°

61 °

Caln, Wednesday, 14 October

Clear. High 61°, low 47°.

Pressure30.06 inHg

Wind11 mph N

Humidity57%

Visibility—

Dew point39°

Thu, 1553° / 43°

53 °

Caln, Thursday, 15 October

Overcast. High 53°, low 43°.

Pressure30.33 inHg

Wind4.8 mph N

Humidity54%

Visibility—

Dew point32°

Fri, 1671° / 53°

71 °

Caln, Friday, 16 October

Overcast. High 71°, low 53°.

Pressure30.24 inHg

Wind13.4 mph SW

Humidity71%

Visibility—

Dew point52°

Sat, 1768° / 40°

68 °

Caln, Saturday, 17 October

Overcast. High 68°, low 40°.

Pressure30.27 inHg

Wind20.1 mph N

Humidity57%

Visibility—

Dew point39°

Sun, 1856° / 36°

56 °

Caln, Sunday, 18 October

Clear. High 56°, low 36°.

Pressure30.59 inHg

Wind9.3 mph N

Humidity41%

Visibility—

Dew point25°

Mon, 1959° / 42°

59 °

Caln, Monday, 19 October

Overcast. High 59°, low 42°.

Pressure30.50 inHg

Wind7.7 mph SW

Humidity48%

Visibility—

Dew point34°

Tue, 2055° / 48°

55 °

Caln, Tuesday, 20 October

Overcast. High 55°, low 48°.

Pressure30.33 inHg

Wind4.9 mph SW

Humidity70%

Visibility—

Dew point44°

Wed, 2159° / 53°

0.24

59 °

Caln, Wednesday, 21 October

Light rain. High 59°, low 53°.

Pressure30.21 inHg

Wind6.9 mph SW

Humidity68%

Visibility—

Dew point48°

Thu, 2270° / 53°

0.01

70 °

Caln, Thursday, 22 October

Light rain. High 70°, low 53°.

Pressure30.15 inHg

Wind7 mph S

Humidity75%

Visibility—

Dew point56°

Fri, 2365° / 47°

0.02

65 °

Caln, Friday, 23 October

Light rain. High 65°, low 47°.

Pressure30.00 inHg

Wind16.7 mph W

Humidity87%

Visibility—

Dew point57°

From day 17 onward the outlook is built from 60-year climate statistics

Sat, 2461° / 47°

0.13

61 °

Caln, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high61°

Average low47°

Average precipitation0.13 in

Chance of precipitation32%

Record high79° (2001)

Record low28° (1969)

Sun, 2560° / 47°

0.13

60 °

Caln, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high60°

Average low47°

Average precipitation0.13 in

Chance of precipitation30%

Record high75° (2021)

Record low34° (1962)

Mon, 2660° / 46°

0.11

60 °

Caln, Monday, 26 October

Climate normal for this date — 60-year average.

Average high60°

Average low46°

Average precipitation0.11 in

Chance of precipitation35%

Record high79° (2023)

Record low33° (1962)

Tue, 2760° / 46°

0.21

60 °

Caln, 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 °

Caln, 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 °

Caln, 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 °

Caln, 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 °

Caln, 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 °

Caln, 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 °

Caln, 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 °

Caln, 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 °

Caln, 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 °

Caln, 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 °

Caln, 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)

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 Caln, 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 Caln, 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.