Upper Saint Clair weather in October

In October, Upper Saint Clair sees average daytime highs of 63°F and overnight lows near 45°F, with 3.6 in of precipitation across 10.4 wet days and about 10.9 hours of daylight. It is the 6th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 69°F in the first days to 58°F by the end. The sky is clear or mostly clear about 31% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 18 min by month's end. Set against the rest of the year, October is Upper Saint Clair's 3rd-clearest and 7th-windiest month. For the whole year in context, see Upper Saint Clair's year-round climate.

Daytime high
63°
6th warmest
Overnight low
45°
7th coldest
Precipitation
3.6 in
10.4 wet days
Daylight
10 h 54 min
6:38 AM – 5:33 PM
Cloud cover
59%
3rd clearest
Wind
7 mph
7th windiest
Solar energy
3.05 kWh/m²
Travel score
5.4
out of 10

Upper Saint Clair is home rule municipality in Allegheny County, Pennsylvania, United States.

Founded
1830

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 69°F in the first days to 58°F by the end.

A typical October day in Upper Saint Clair reaches about 63°F in the afternoon and slips back to 45°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 51°F and 75°F. Set against its neighbours, October runs about 12°F cooler than September and about 12°F warmer than November.

20°40°60°80°151015202531
Avg high (°F)Avg low (°F)
16951
26950
36950
46850
56849
66749
76748
86748
96648
106647
116547
126547
136446
146446
156446
166345
176345
186244
196244
206144
216143
226043
236043
246042
255942
265942
275841
285841
295841
305740
315740

How October really feels in Upper Saint Clair

Once humidity and wind are folded in, October averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Upper Saint Clair weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan37° / 24°3.612.26.89.50.0
Feb41° / 25°3.211.15.510.40.2
Mar50° / 33°4.4133.511.72.1
Apr62° / 43°4.613.80.9134.7
May71° / 52°5.014.4014.25.8
Jun79° / 61°5.213.9014.86.0
Jul82° / 65°5.014.4014.65.6
Aug81° / 63°3.812.2013.66.2
Sep75° / 56°3.910012.36.8
Oct63° / 45°3.610.40.210.95.4
Nov51° / 36°3.5101.29.82.5
Dec42° / 29°3.511.44.29.20.2

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 15% of October, with mostly cloudy or overcast conditions the remaining 54%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
35050
45050
55050
64951
74951
84951
94852
104852
114852
124753
134753
144654
154654
164654
174555
184555
194456
204456
214456
224456
234456
244357
254258
264258
274357
284258
294159
304258
314258

Chance of precipitation in October

Any precipitationSnow

Upper Saint Clair gets around 3.6 in of rain and snow over 10.4 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 34% and peaks near 37% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1340
2340
3330
4330
5320
6320
7320
8310
9320
10320
11320
12320
13330
14330
15330
16340
17340
18350
19350
20360
21361
22361
23371
24371
25371
26361
27361
28362
29352
30352
31342

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the dry band about 84% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16717124
26816124
36916114
47115104
57115104
6731494
7751483
8761383
9781273
10781273
11811162
12811162
13821152
14851041
15851041
1687931
1787931
1890820
1990820
2090820
2192710
2292710
2393610
2493610
2593610
2693610
2793610
2894600
2995500
3095500
3195500

Wind in October

Winds average 7 mph in October.

Across October, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over October. Sunrise moves from 6:22 AM to 6:55 AM, and sunset from 5:57 PM to 5:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:225:57
211.56:235:55
311.56:245:53
411.46:255:52
511.46:265:50
611.46:275:48
711.36:285:47
811.36:295:45
911.26:305:44
1011.26:315:42
1111.16:335:40
1211.16:345:39
1311.06:355:37
1411.06:365:36
1511.06:375:34
1610.96:385:33
1710.96:395:31
1810.86:405:30
1910.86:415:28
2010.76:435:27
2110.76:445:25
2210.76:455:24
2310.66:465:23
2410.66:475:21
2510.56:485:20
2610.56:495:19
2710.46:515:17
2810.46:525:16
2910.46:535:15
3010.36:545:14
3110.36:555:13

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.05 kWh/m².

For context, solar energy here swings from a low near 1.53 kWh/m² to a high of 5.94 kWh/m² in June across the year — October's 3.05 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.6Moderate
23.6Moderate
33.5Moderate
43.5Moderate
53.5Moderate
63.5Moderate
73.4Moderate
83.4Moderate
93.3Moderate
103.3Moderate
113.3Moderate
123.2Moderate
133.2Moderate
143.1Moderate
153.1Moderate
163.0Moderate
173.0Moderate
183.0Moderate
192.9Moderate
202.9Moderate
212.8Moderate
222.8Moderate
232.8Moderate
242.7Moderate
252.7Moderate
262.7Moderate
272.6Moderate
282.6Moderate
292.6Moderate
302.5Moderate
312.5Moderate
Planning a trip in October

Is October a good time to visit Upper Saint Clair?

Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.4
Sightseeing
6th-best month of the year
1.6
Beach & pool
6th-best month of the year

October is a reasonable time to visit Upper Saint Clair for sightseeing.

What to pack for Upper Saint Clair in October

From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In October, Upper Saint Clair sees daytime highs around 63°F and nights near 45°F. Worth packing: a warm layer and rain gear. About 10 days see rain.

a warm layerrain gear

UV index in Upper Saint Clair in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Upper Saint Clair peaks around June 22 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 22UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug7Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in Upper Saint Clair in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in Upper Saint Clair is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (November, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1317 µg/m³Nov 147 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar11Good
Apr11Good
May15Moderate
Jun16Moderate
Jul17Moderate
Aug15Moderate
Sep12Good
Oct8Good
Nov7Good
Dec8Good
Location & terrain

Where is Upper Saint Clair?

Upper Saint Clair sits at 40.3°N, 80.1°W, 1,099 ft above sea level, in United States. The nearest listed city is Mount Lebanon, 2.5 mi away.

Topography around Upper Saint Clair

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Upper Saint Clair.

Within 2 miles, the terrain around Upper Saint Clair has only modest variations in elevation — a maximum elevation change of 453 ft around an average of 1,070 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 722 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,359 ft.

The land around Upper Saint Clair is covered by trees (72%) within 2 miles, trees (66%) within 10 miles, and trees (76%) within 50 miles.

2 miles
453 ft
10 miles
722 ft
50 miles
2,359 ft
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Mount Lebanon 2.5 mi · Bethel Park 2.5 mi · Baldwin 5.6 mi · Pittsburgh 8.7 mi · McKeesport 12 mi · West Mifflin 12 mi · Wilkinsburg 13 mi · Monroeville 17 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Upper Saint Clair (40.3359°, -80.0834°, elevation 1,099 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).