Monthly outlook for West St. Clair, PA: average high 55.5°, average low 40.5°. That is 2.8° above the climate normal for October. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 2 November (67.7°), the coolest 8 November (29.1°).
55.5°/40.5°
Average high / low
+2.8°
Above normal
3 / 5
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
29 October – 7 November
60.8°
51.8°
+5°
8 November – 17 November
46.6°
47°
-0.3°
18 November – 27 November
at normal
43.9°
—
October records over 66 years
82.2°1 October 2019All-time high
20.5°31 October 2011All-time low
Climate normals and records are computed from the nearest reference point — Central City (10 mi).
Fri, 3060° / 39°0.02
60 °
West St. Clair, Friday, 30 October
Light rain. High 60°, low 39°.
Pressure30.24 inHg
Wind13.2 mph NW
Humidity62%
Visibility6.2 mi
Dew point43°
Sat, 3159° / 36°0
59 °
West St. Clair, Saturday, 31 October
Partly cloudy. High 59°, low 36°.
Pressure30.47 inHg
Wind1.2 mph N
Humidity49%
Visibility6.2 mi
Dew point34°
Sun, 0158° / 46°0
58 °
West St. Clair, Sunday, 1 November
Overcast. High 58°, low 46°.
Pressure30.47 inHg
Wind6 mph SE
Humidity52%
Visibility6.2 mi
Dew point36°
Mon, 0268° / 46°0
68 °
West St. Clair, Monday, 2 November
Clear. High 68°, low 46°.
Pressure30.36 inHg
Wind4.5 mph SE
Humidity42%
Visibility—
Dew point37°
Tue, 0367° / 48°0
67 °
West St. Clair, Tuesday, 3 November
Overcast. High 67°, low 48°.
Pressure30.27 inHg
Wind8.9 mph S
Humidity49%
Visibility—
Dew point40°
Wed, 0460° / 47°0
60 °
West St. Clair, Wednesday, 4 November
Overcast. High 60°, low 47°.
Pressure30.33 inHg
Wind14.5 mph SE
Humidity91%
Visibility—
Dew point49°
Thu, 0560° / 53°0.8
60 °
West St. Clair, Thursday, 5 November
Rain. High 60°, low 53°.
Pressure29.94 inHg
Wind20.4 mph SE
Humidity96%
Visibility—
Dew point55°
Fri, 0660° / 53°0.21
60 °
West St. Clair, Friday, 6 November
Light rain. High 60°, low 53°.
Pressure29.59 inHg
Wind10.3 mph W
Humidity84%
Visibility—
Dew point51°
Sat, 0751° / 33°0.04
51 °
West St. Clair, Saturday, 7 November
Light rain. High 51°, low 33°.
Pressure29.80 inHg
Wind15.5 mph NW
Humidity93%
Visibility—
Dew point41°
Sun, 0844° / 29°0
44 °
West St. Clair, Sunday, 8 November
Clear. High 44°, low 29°.
Pressure30.27 inHg
Wind13.2 mph NW
Humidity60%
Visibility—
Dew point24°
Mon, 0945° / 30°0
45 °
West St. Clair, Monday, 9 November
Overcast. High 45°, low 30°.
Pressure30.30 inHg
Wind5.1 mph NW
Humidity66%
Visibility—
Dew point28°
Tue, 1045° / 37°0
45 °
West St. Clair, Tuesday, 10 November
Overcast. High 45°, low 37°.
Pressure30.09 inHg
Wind4 mph N
Humidity63%
Visibility—
Dew point30°
Wed, 1139° / 36°0.07
39 °
West St. Clair, Wednesday, 11 November
Light snow. High 39°, low 36°.
Pressure30.03 inHg
Wind7.4 mph NW
Humidity98%
Visibility—
Dew point37°
Thu, 1249° / 34°0
49 °
West St. Clair, Thursday, 12 November
Partly cloudy. High 49°, low 34°.
Pressure29.97 inHg
Wind14.1 mph NW
Humidity79%
Visibility—
Dew point35°
Fri, 1357° / 37°0
57 °
West St. Clair, Friday, 13 November
Overcast. High 57°, low 37°.
Pressure30.00 inHg
Wind5.7 mph SW
Humidity72%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 1446° / 33°0.09
46 °
West St. Clair, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.09 in
Chance of precipitation27%
Record high66° (1993)
Record low15° (1986)
Sun, 1546° / 33°0.13
46 °
West St. Clair, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.13 in
Chance of precipitation40%
Record high65° (1989)
Record low16° (1996)
Mon, 1646° / 32°0.13
46 °
West St. Clair, Monday, 16 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.13 in
Chance of precipitation35%
Record high61° (1990)
Record low16° (1967)
Tue, 1744° / 31°0.11
44 °
West St. Clair, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.11 in
Chance of precipitation28%
Record high63° (2023)
Record low18° (1995)
Wed, 1845° / 32°0.07
45 °
West St. Clair, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.07 in
Chance of precipitation33%
Record high66° (2016)
Record low13° (2014)
Thu, 1946° / 32°0.1
46 °
West St. Clair, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.1 in
Chance of precipitation32%
Record high66° (1991)
Record low11° (2014)
Fri, 2044° / 31°0.09
44 °
West St. Clair, Friday, 20 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.09 in
Chance of precipitation32%
Record high69° (1991)
Record low15° (2022)
Sat, 2143° / 31°0.09
43 °
West St. Clair, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.09 in
Chance of precipitation35%
Record high63° (2007)
Record low16° (1987)
Sun, 2243° / 30°0.12
43 °
West St. Clair, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.12 in
Chance of precipitation42%
Record high61° (1979)
Record low10° (2018)
Mon, 2344° / 29°0.06
44 °
West St. Clair, Monday, 23 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.06 in
Chance of precipitation32%
Record high63° (1979)
Record low11° (2008)
Tue, 2443° / 30°0.11
43 °
West St. Clair, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.11 in
Chance of precipitation38%
Record high62° (2014)
Record low11° (2005)
Wed, 2544° / 29°0.1
44 °
West St. Clair, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.1 in
Chance of precipitation35%
Record high61° (1979)
Record low7° (1995)
Thu, 2645° / 31°0.17
45 °
West St. Clair, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.17 in
Chance of precipitation45%
Record high60° (2006)
Record low14° (2005)
Fri, 2743° / 31°0.13
43 °
West St. Clair, Friday, 27 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.13 in
Chance of precipitation45%
Record high62° (1990)
Record low14° (1977)
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 West St. Clair, 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 West St. Clair, 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.