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WeatherLive › Pennsylvania › Castle Shannon

Castle Shannon, PA Weather (15234)

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherCastle Shannon · 1:43 PM EDT
29° | 18°
29°C
Feels like 29°
Sunny
WindSW 8 mph · Gusts 13 mph
Precip17% · –
Humidity52% · Dew point 18°
UV index7 High
Air Quality91 Moderate
Pressure29.94 inHg
Visibility6 mi
Sunrise / Sunset6:42 AM · 8:00 PM · 13h 18m

Weather map — Castle Shannon

Full radar →
Now
29°
3%
8 mph
14:00
29°
3%
9 mph
15:00
29°
3%
9 mph
16:00
28°
12%
9 mph
17:00
27°
8%
7 mph
18:00
24°
17%
6 mph
19:00
22°
18%
6 mph
20:00
23°
22%
5 mph
21:00
22°
19%
3 mph
22:00
21°
25%
3 mph
23:00
21°
13%
3 mph
00:00
20°
13%
2 mph
01:00
20°
13%
2 mph
02:00
20°
13%
2 mph
03:00
19°
14%
2 mph
04:00
19°
14%
2 mph
05:00
19°
14%
2 mph
06:00
18°
13%
2 mph
07:00
18°
14%
2 mph
08:00
17°
13%
2 mph
09:00
18°
16%
2 mph
10:00
21°
6%
3 mph
11:00
23°
3%
3 mph
12:00
24°
2%
3 mph

Today · Thu 8/27

High 29°
17% / –

Sunny. Winds SW at 9 mph.

Tonight · Thu 8/27

Low 17°
19% / –

Partly cloudy. Winds NW at 3 mph.

Tomorrow · Fri 8/28

27° | 17°
7% / –

Sunny. Winds N at 5 mph.

7-day trend

Castle Shannon · temperature + precipitation

10-day forecast

Updated 1:43 PM

Details & indices

Wind
8 mph SW
Gusts 13 mph
Humidity
52%
Dew point 18°
Pressure
29.94 inHg
Rising
UV index
7 — High
High today
Air Quality
Moderate
AQI 91 · US EPA
Allergy
Very high
Mugwort
Visibility
6 mi
Clear view
Allergy — Castle Shannon

🌿 Conditions right now

View all →
Birch
None
Grass
Moderate
Oak
None
Alder
None
Hazel
None
Mugwort
High
Ragweed
Moderate

Sun & moon

Sunrise6:42 AM
Sunset8:00 PM
Length of day13h 18m
Moonrise7:49 PM
Moonset6:00 AM
Moon phase🌕 Full Moon · 100%
Next full moonAug 28 Sturgeon Moon
Latitude40.3648°N
Longitude-80.0223°E

Water temps nearby

View all →
No beaches within 50 miles
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Great
Line-drying weather
Grilling
Great
Fire up the grill
Running
Fair
Lace up outside
Patio
Great
Dinner outdoors
Nearby places in {{REGION}}
Philadelphia
Mostly cloudy
31°
Pittsburgh
Sunny
29°
Data sources · Thursday, August 27
Where the Castle Shannon forecast comes from
This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 40.3648°N, -80.0223°.
NBM + global weather models
Updated: 1:43 PM
Weather in Castle Shannon
Over the next 10 days Castle Shannon tops out around 35° (Friday) and dips to 16° on the coolest night (Saturday). About 0.33 in of precipitation is expected in total; the most likely wet day is Thursday (78% chance). No active NWS alerts at the moment — quiet on the hazards front. Right now Castle Shannon is running about 58° warmer than Cleveland. Longer view: classic Northeast mix — nor'easters, humid spells and a glorious fall.
Castle Shannon, PA · Elev 1,027 ft · 40.36°N, 80.02°W · Pennsylvania · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 1:43 PM