Observed 4:50 PM EDT at KAGC
Castle Shannon, PA weather
Sunny and 63°17°, jacket by 8 PM.
Today: low 37°3° (likely 37°3° to 40°4°), high 64°18° (likely 62°17° to 64°18°).
Now 63°17°
Sunny
- Wind
- 5 mph7 km/h
- From the east. Up to 6 mph10 km/h through 5 AM
- Dew point
- 39°4°
- Comfortable
- UV tomorrow
- 4Moderate
- Moderate 12–5 PM · peak 4
- Air quality
- 34Good
- PM2.5 (fine particles) · tomorrow moderate
- Pressure
- 30.43 inHg1030 hPa
- Falling slowly · −0.03 inHg−1.0 hPa in 3 h
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
TonightDown to 39°4° by 5 AM · Clear
Tomorrow morningUp to 53°12° by 11 AM · Clear
Tomorrow afternoonUp to 65°18° by 4 PM · Clear
Tomorrow nightDown to 41°5° by 5 AM · Partly cloudy
Monday morningUp to 56°13° by 11 AM · Clear
Monday afternoonUp to 68°20° by 3 PM · Clear
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 5p | Sunny | 64°18° (likely 62°17° to 64°18°) | 64°18° | 0% | 3 mph5 km/h from E, gusts 6 mph10 km/h | 49% | 7% | 1 |
| Sat 6p | Clear | 62°17° (likely 58°14° to 62°17°) | 62°17° | 0% | 3 mph5 km/h from E, gusts 7 mph11 km/h | 54% | 2% | 0 |
| Sat 7p | Clear | 58°14° (likely 54°12° to 58°14°) | 58°14° | 0% | 5 mph8 km/h from E, gusts 7 mph11 km/h | 62% | 8% | 0 |
| Sat 8p | Clear | 52°11° (likely 52°11° to 53°12°) | 52°11° | 0% | 6 mph10 km/h from E, gusts 7 mph11 km/h | 74% | 9% | 0 |
| Sat 9p | Clear | 50°10° (likely 50°10° to 53°12°) | 48°9° | 0% | 6 mph10 km/h from SE, gusts 10 mph17 km/h | 78% | 8% | 0 |
| Sat 10p | Clear | 48°9° (likely 48°9° to 51°11°) | 45°7° | 0% | 6 mph10 km/h from SE, gusts 10 mph17 km/h | 79% | 5% | 0 |
| Sat 11p | Clear | 46°8° (likely 46°8° to 50°10°) | 43°6° | 0% | 6 mph10 km/h from SE, gusts 10 mph16 km/h | 78% | 0% | 0 |
| Sun 12a | Clear | 44°7° (likely 44°7° to 49°9°) | 42°6° | 0% | 5 mph8 km/h from SE, gusts 9 mph15 km/h | 82% | 0% | 0 |
| Sun 1a | Clear | 43°6° (likely 43°6° to 48°9°) | 41°5° | 0% | 3 mph5 km/h from SE, gusts 9 mph15 km/h | 83% | 0% | 0 |
| Sun 2a | Clear | 42°6° (likely 42°6° to 47°8°) | 40°4° | 0% | 3 mph5 km/h from SE, gusts 9 mph14 km/h | 84% | 0% | 0 |
| Sun 3a | Clear | 42°6° (likely 42°6° to 47°8°) | 42°6° | 0% | 2 mph3 km/h from SE, gusts 8 mph13 km/h | 88% | 0% | 0 |
| Sun 4a | Clear | 40°4° (likely 40°4° to 46°8°) | 41°5° | 0% | 2 mph3 km/h from SE, gusts 7 mph11 km/h | 90% | 0% | 0 |
| Sun 5a | Clear | 39°4° (likely 39°4° to 45°7°) | 39°4° | 0% | 2 mph3 km/h from SE, gusts 7 mph11 km/h | 92% | 0% | 0 |
| Sun 6a | Clear | 38°3° (likely 38°3° to 44°7°) | 39°4° | 0% | 1 mph2 km/h from SE, gusts 6 mph10 km/h | 94% | 1% | 0 |
| Sun 7a | Clear | 38°3° (likely 37°3° to 43°6°) | 38°3° | 0% | 1 mph2 km/h from SE, gusts 6 mph9 km/h | 98% | 3% | 0 |
| Sun 8a | Sunny | 38°3° (likely 37°3° to 43°6°) | 38°3° | 0% | 1 mph2 km/h from SE, gusts 6 mph9 km/h | 99% | 0% | 0 |
| Sun 9a | Sunny | 40°4° (likely 40°4° to 47°8°) | 40°4° | 0% | 2 mph3 km/h from SE, gusts 6 mph10 km/h | 100% | 1% | 0 |
| Sun 10a | Sunny | 47°8° (likely 47°8° to 53°12°) | 47°8° | 0% | 2 mph3 km/h from S, gusts 8 mph12 km/h | 86% | 1% | 1 |
| Sun 11a | Sunny | 53°12° (likely 53°12° to 57°14°) | 53°12° | 0% | 2 mph3 km/h from S, gusts 8 mph12 km/h | 71% | 3% | 2 |
| Sun 12p | Sunny | 57°14° (likely 57°14° to 60°16°) | 57°14° | 0% | 2 mph3 km/h from S, gusts 7 mph11 km/h | 62% | 3% | 3 |
| Sun 1p | Sunny | 61°16° (likely 60°16° to 62°17°) | 61°16° | 0% | 2 mph3 km/h from S, gusts 6 mph10 km/h | 54% | 2% | 4 |
| Sun 2p | Sunny | 63°17° (likely 61°16° to 64°18°) | 63°17° | 0% | 1 mph2 km/h from S, gusts 6 mph9 km/h | 50% | 2% | 4 |
| Sun 3p | Sunny | 64°18° (likely 63°17° to 65°18°) | 64°18° | 0% | 1 mph2 km/h from S, gusts 5 mph9 km/h | 49% | 1% | 4 |
| Sun 4p | Sunny | 65°18° (likely 63°17° to 65°18°) | 65°18° | 0% | 1 mph2 km/h from S, gusts 5 mph8 km/h | 46% | 1% | 3 |
| Sun 5p | Sunny | 64°18° (likely 62°17° to 64°18°) | 65°18° | 0% | 1 mph2 km/h from SE, gusts 5 mph8 km/h | 47% | 1% | 2 |
| Sun 6p | Clear | 62°17° (likely 58°14° to 62°17°) | 62°17° | 0% | 2 mph3 km/h from SE, gusts 5 mph8 km/h | 52% | 6% | 1 |
| Sun 7p | Clear | 58°14° (likely 54°12° to 58°14°) | 58°14° | 0% | 2 mph3 km/h from SE, gusts 5 mph8 km/h | 60% | 37% | 0 |
| Sun 8p | Clear | 52°11° (likely 51°11° to 55°13°) | 52°11° | 0% | 2 mph3 km/h from SE, gusts 5 mph9 km/h | 73% | 40% | 0 |
| Sun 9p | Clear | 50°10° (likely 49°9° to 53°12°) | 50°10° | 0% | 1 mph2 km/h from SE, gusts 5 mph8 km/h | 82% | 41% | 0 |
| Sun 10p | Clear | 48°9° (likely 47°8° to 52°11°) | 48°9° | 0% | 1 mph2 km/h from SE, gusts 5 mph8 km/h | 87% | 41% | 0 |
| Sun 11p | Mostly clear | 46°8° (likely 46°8° to 51°11°) | 46°8° | 0% | 2 mph3 km/h from SE, gusts 7 mph11 km/h | 92% | 49% | 0 |
| Mon 12a | Mostly clear | 45°7° (likely 44°7° to 50°10°) | 45°7° | 0% | 1 mph2 km/h from S, gusts 5 mph8 km/h | 97% | 47% | 0 |
| Mon 1a | Mostly clear | 44°7° (likely 43°6° to 49°9°) | 44°7° | 0% | 1 mph2 km/h from S, gusts 6 mph9 km/h | 98% | 26% | 0 |
| Mon 2a | Mostly clear | 43°6° (likely 42°6° to 49°9°) | 43°6° | 0% | 1 mph2 km/h from SW, gusts 5 mph8 km/h | 100% | 56% | 0 |
| Mon 3a | Clear | 43°6° (likely 42°6° to 48°9°) | 43°6° | 0% | 1 mph2 km/h from S, gusts 4 mph7 km/h | 100% | 25% | 0 |
| Mon 4a | Clear | 42°6° (likely 41°5° to 46°8°) | 42°6° | 0% | 2 mph3 km/h from S, gusts 5 mph8 km/h | 100% | 19% | 0 |
| Mon 5a | Mostly clear | 41°5° (likely 41°5° to 46°8°) | 41°5° | 0% | 2 mph3 km/h from S, gusts 6 mph9 km/h | 100% | 55% | 0 |
| Mon 6a | Partly cloudy | 41°5° (likely 40°4° to 45°7°) | 41°5° | 0% | 2 mph3 km/h from S, gusts 6 mph9 km/h | 100% | 45% | 0 |
| Mon 7a | Partly cloudy | 40°4° (likely 39°4° to 45°7°) | 41°5° | 0% | 2 mph3 km/h from S, gusts 6 mph9 km/h | 100% | 29% | 0 |
| Mon 8a | Sunny | 40°4° (likely 38°3° to 43°6°) | 41°5° | 0% | 2 mph3 km/h from S, gusts 5 mph9 km/h | 99% | 16% | 0 |
| Mon 9a | Sunny | 43°6° (likely 40°4° to 47°8°) | 43°6° | 0% | 2 mph3 km/h from S, gusts 5 mph9 km/h | 100% | 17% | 0 |
| Mon 10a | Sunny | 49°9° (likely 47°8° to 53°12°) | 49°9° | 0% | 2 mph3 km/h from SW, gusts 8 mph12 km/h | 92% | 7% | 1 |
| Mon 11a | Sunny | 56°13° (likely 55°13° to 57°14°) | 56°13° | 0% | 2 mph3 km/h from SW, gusts 7 mph11 km/h | 77% | 0% | 2 |
| Mon 12p | Sunny | 60°16° (likely 60°16° to 61°16°) | 60°16° | 0% | 2 mph3 km/h from SW, gusts 7 mph11 km/h | 66% | 2% | 3 |
| Mon 1p | Sunny | 64°18° (likely 63°17° to 64°18°) | 64°18° | 0% | 3 mph5 km/h from W, gusts 7 mph11 km/h | 57% | 2% | 4 |
| Mon 2p | Sunny | 66°19° (likely 65°18° to 66°19°) | 66°19° | 0% | 5 mph8 km/h from W, gusts 8 mph13 km/h | 51% | 24% | 4 |
| Mon 3p | Sunny | 68°20° (likely 65°18° to 68°20°) | 68°20° | 0% | 5 mph8 km/h from W, gusts 9 mph15 km/h | 47% | 3% | 4 |
| Mon 4p | Mostly sunny | 68°20° (likely 65°18° to 68°20°) | 68°20° | 0% | 5 mph8 km/h from W, gusts 9 mph15 km/h | 47% | 5% | 3 |
Days ahead
Today, Oct 24. Sunny. High 64°18°, low 37°3°. Typical 60°16° / 41°5°. Dry. Forecasts agree.
Evening
6 PM–midnight
Clear, 52°11°Dry
Overnight
midnight–6 AM
Clear, 39°4°Dry
Official NWS forecast
Today: Sunny, with a high near 64. East wind around 3 mph.
Tonight: Clear, with a low around 37. Southeast wind 2 to 6 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 62°17°–64°18°
- Low, likely
- 37°3°–40°4°
- Typical high / low
- 60°16° / 41°5°
- Wind
- 8 mph12 km/h, gusts 14 mph23 km/h
- UV peak
- 4
Tomorrow, Oct 25. Sunny. High 66°19°, low 40°4°. Typical 60°16° / 41°5°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 38°3°Dry
Afternoon
noon–6 PM
Sunny, 65°18°Dry
Evening
6 PM–midnight
Clear, 52°11°Dry
Overnight
midnight–6 AM
Clear, 41°5°Dry
Official NWS forecast
Day: Sunny, with a high near 66. Southeast wind around 2 mph.
Night: Mostly clear, with a low around 40. South wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 63°17°–66°19°
- Low, likely
- 37°3°–43°6°
- Typical high / low
- 60°16° / 41°5°
- Wind
- 8 mph12 km/h, gusts 13 mph22 km/h
- UV peak
- 4
Monday, Oct 26. Mostly sunny. High 68°20°, low 45°7°. Typical 59°15° / 40°4°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 40°4°Dry
Afternoon
noon–6 PM
Sunny, 68°20°Dry
Evening
6 PM–midnight
Clear, 55°13°Dry
Overnight
midnight–6 AM
Cloudy, 47°9°Dry
Official NWS forecast
Day: Sunny, with a high near 68. Southwest wind around 5 mph.
Night: Partly cloudy, with a low around 45.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 65°18°–68°20°
- Low, likely
- 38°3°–45°7°
- Typical high / low
- 59°15° / 40°4°
- Wind
- 6 mph10 km/h, gusts 14 mph23 km/h
- UV peak
- 4
Tuesday, Oct 27. Partly sunny. High 66°19°, low 45°7°. Typical 59°15° / 40°4°. Dry. Forecasts agree.
Morning
6 AM–noon
Partly sunny, 46°8°Dry
Afternoon
noon–6 PM
Sunny, 65°19°Dry
Evening
6 PM–midnight
Mostly clear, 56°13°Dry
Overnight
midnight–6 AM
Cloudy, 49°9°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 66.
Night: Mostly cloudy, with a low around 45.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 65°18°–66°19°
- Low, likely
- 43°6°–48°9°
- Typical high / low
- 59°15° / 40°4°
- Wind
- 5 mph8 km/h, gusts 11 mph17 km/h
- UV peak
- 4
Wednesday, Oct 28. Cloudy. High 69°21°, low 47°8°. Typical 58°14° / 40°4°. Dry. Mostly agree.
Morning
6 AM–noon
Cloudy, 48°9°Dry
Afternoon
noon–6 PM
Cloudy, 66°19°Dry
Evening
6 PM–midnight
Mostly clear, 56°14°Dry
Overnight
midnight–6 AM
Clear, 47°8°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 69.
Night: Mostly cloudy, with a low around 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 65°18°–69°21°
- Low, likely
- 46°8°–50°10°
- Typical high / low
- 58°14° / 40°4°
- Wind
- 8 mph13 km/h, gusts 17 mph27 km/h
- UV peak
- 3
Thursday, Oct 29. Mostly sunny. High 71°22°, low 48°9°. Typical 58°14° / 39°4°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 46°8°Dry
Afternoon
noon–6 PM
Sunny, 70°21°Dry
Evening
6 PM–midnight
Clear, 58°15°Dry
Overnight
midnight–6 AM
Clear, 48°9°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 71.
Night: Mostly clear, with a low around 48.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 69°21°–71°22°
- Low, likely
- 42°6°–50°10°
- Typical high / low
- 58°14° / 39°4°
- Wind
- 8 mph12 km/h, gusts 27 mph44 km/h
- UV peak
- 4
Friday, Oct 30. Mostly sunny. High 71°22°, low 48°9°. Typical 58°14° / 39°4°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 47°8°Dry
Afternoon
noon–6 PM
Sunny, 71°22°Dry
Evening
6 PM–midnight
Clear, 60°16°Dry
Overnight
midnight–6 AM
Partly cloudy, 49°9°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 71.
Night: Partly cloudy, with a low around 48.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 70°21°–72°22°
- Low, likely
- 41°5°–52°11°
- Typical high / low
- 58°14° / 39°4°
- Wind
- 6 mph9 km/h, gusts 20 mph31 km/h
- UV peak
- 4
Saturday, Oct 31. Cloudy. High 71°22°, low 48°9°. Typical 57°14° / 39°4°. Dry. Mostly agree.
Morning
6 AM–noon
Cloudy, 48°9°Dry
Afternoon
noon–6 PM
Cloudy, 71°22°Dry
Evening
6 PM–midnight
Cloudy, 60°16°Dry
Overnight
midnight–6 AM
Partly cloudy, 56°13°30% chance
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 68°20°–73°23°
- Low, likely
- 45°7°–54°12°
- Typical high / low
- 57°14° / 39°4°
- Wind
- 8 mph12 km/h, gusts 24 mph38 km/h
- UV peak
- 3
Sunday, Nov 1. Cloudy. High 67°19°, low 55°13°. Typical 57°14° / 38°3°. Rain 0.19 in4.8 mm, 50% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 56°13°40% chance
Afternoon
noon–6 PM
Cloudy, 65°18°50% chance · 0.02 in0.5 mm
Evening
6 PM–midnight
Drizzle, 61°16°50% chance · 0.23 in5.7 mm
Overnight
midnight–6 AM
Drizzle, 59°15°50% chance · 0.12 in3.1 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 60°16°–72°22°
- Low, likely
- 53°12°–60°16°
- Typical high / low
- 57°14° / 38°3°
- Wind
- 10 mph16 km/h, gusts 24 mph39 km/h
Monday, Nov 2. Rain. High 65°18°, low 52°11°. Typical 56°13° / 38°3°. Rain 0.64 in16 mm, 50% chance. Forecasts differ.
Morning
6 AM–noon
Rain, 60°16°50% chance · 0.17 in4.3 mm
Afternoon
noon–6 PM
Rain, 63°17°30% chance · 0.36 in9.1 mm
Evening
6 PM–midnight
Drizzle, 55°13°30% chance · 0.13 in3.4 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 58°14°–69°21°
- Low, likely
- 43°6°–59°15°
- Typical high / low
- 56°13° / 38°3°
- Wind
- 16 mph26 km/h, gusts 34 mph55 km/h
The outlook
Today
Dry, high 64°, low 37°.
Tomorrow
Dry, high 66°, low 40°.
Monday
Dry, high 68°, low 45°.
Rest of week
Highs 65–71°; chance of precipitation on Monday.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (PBZ) (opens in a new tab)
What changed since yesterday
No meaningful changes from yesterday’s forecast.
Radar
For your home
What this week’s weather means for heating, cooling, pipes and fresh air.
Heating this week
About 73% less heating than a typical week.
Heating degree days, base 65°F
Heat-pump hours, next 7 days
- h below 47°F
- 23
- h below 17°F
- 0
- h below 5°F
- 0
47, 17 and 5°F are the test points heat pumps are rated at. About 13 hours are near freezing and damp, when outdoor units defrost more often.
Comfort
Dry air outside (dew point 39°F).
Open the windows?
Sun, 1:00 PM–6:00 PM
Good stretch to open the windows.
Is this typical?
Oct 24, today vs a typical year
Today’s expected high is 4°2° warmer than typical.
- Normal high / low
- 60°16° / 41°5°
- Forecast high / low
- 64°18° / 37°3°
- Record high
- 81°27° in 1963
- Record low
- 21°−6° in 1969
Last 7 days vs normal
On average 2°1° colder than normal (daily mean temperature).
- −6°−3°SunOct 18
- −2°−1°MonOct 19
- ±0°TueOct 20
- ±0°WedOct 21
- −2°−1°ThuOct 22
- +1°FriOct 23
- —SatOct 24
Castle Shannon weather by month: normals, records, snow and freeze dates
Sun & moon
Sun
Sunrise 7:40 AM, sunset 6:27 PM.
- Daylight
- 10 h 46 min
- Losing 2 min 25 s a day; shortest Dec 21, 1 h 29 min less
- Golden hour
- 5:49–6:44 PM
- Morning 7:23–8:18 AM
- Blue hour
- 6:44–6:54 PM
- Morning 7:13–7:23 AM; first light 7:13 AM
Stars tonight? Fair
Clear 6:54 PM–7:14 AM, but the moon is 99% lit and up.
Moon
Waxing gibbous
98% lit · growing
- Today
- sets 5:53 AM · rises 5:24 PM
- Full moon
- Oct 26
- New moon
- Nov 9
