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Langhorne, Pennsylvania Weather

Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →

Langhorne weather forecast — hour by hour, 7-day outlook, NOAA radar

Langhorne, PA
Saturday, July 4 at 7:20 PM
97
°
Clear
Feels like
100°
Humidity
36%
Wind
6 mph
Sunrise
1:35 AM
Sunset
4:32 PM
Langhorne, PA
Hour by hour · 24h
24-Hour ForecastLanghorne, PA: 24-hour forecast. Temperatures range from 74 to 97 degrees Fahrenheit with a 51% chance of precipitation at 11 PM.
L 74°H 97°
Langhorne, PA
7-day forecast
  1. Today
    Jul 4
    Heavy Rain
    51%
    0.83″
    99°74°
  2. Sunday
    Jul 5
    Heavy Rain
    59%
    3.9″
    91°71°-8°
  3. Monday
    Jul 6
    Thunderstorm
    91%
    0.62″
    77°71°-14°
  4. Tuesday
    Jul 7
    Light Showers
    87%
    0.01″
    75°67°-2°
  5. Wednesday
    Jul 8
    Overcast
    31%
    80°65°+5°
  6. Thursday
    Jul 9
    Overcast
    11%
    91°68°+11°
  7. Friday
    Jul 10
    Overcast
    38%
    89°73°-2°
Langhorne, PA
Anemometer · 24h winds · from true
NESW
From · True
SW
218° · backing 48°
Direction
SW
218°
Sustained
6
mph
Gust
17
mph
Peak 24h
18
avg 5
Beaufort · 2 · LIGHT BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 5 · pk 18 @ 4:00p
01020304050MPHB1B2B3B4B5B6B7B8B9-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 463SUSTGUST
−24h−18h−12h−6hnow
Light breeze backing 48° from the sw.
Langhorne, PA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1003.4
-1.4 mb in 3h · falling · 29.63 inHg
Now
1003.4
mb
3h
-1.4
mb
12h
-2.4
mb
24h
-2.5
mb
Regime · RAIN
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 10031007
9951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR-21h-18h-15h-12h-9h-6h-3h-24hNOW1007.41003.51003.5
−24h−18h−12h−6hnow
Pressure giving way — clouds thicken and rain edges closer.
Langhorne, PA
Air quality
125
AQI
Unhealthy for Sensitive Groups
+60 in 6h

AQI 125 (Unhealthy for Sensitive Groups), driven by Ozone. AQI up 60 in the last 6 hours — air quality is degrading. Ozone at AQI 93. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.

CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion.

PM 2.5Good
6.5μg/m³
PM 10Good
7μg/m³
NO₂Good
6μg/m³
OzoneDRIVERUnhealthy SG
133μg/m³
UV IndexLow
0.3

What's driving it

Ozone × UV × Sky

Ozone at AQI 93. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.

Present
AQI 93
UV peak
0.2 at 1 PM
Sky at peak
overcast
Projected peak
AQI 11

PM × Wind × Precip

PM2.5 at 6.5 µg/m³ (AQI 36) with a 0.97 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.

PM2.5/PM10
0.97
Wind
light
Recent rain
0h in last 6h
Pattern
stagnant smoke
Langhorne, PA
Sky cover · visibility · 24h
Cloud cover
0%
CLEAR
100%0%−24h−18h−12h−6hnow

Visibility
111.3mi
UNLIMITED
116 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
23:20 UTC · Langhorne, PA · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
23:20 UTC · Langhorne, PA · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Langhorne, PA
Satellite · infrared · animated
Langhorne, PA
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Langhorne, PA
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:03 AM
Sunrise
1:35 AM
Daylight
14h 57m
Sunset
4:32 PM
Civil dusk
9:06 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Langhorne, PA
The moon
Waning Gibbous
78% illuminated
Moonrise
10:53 PM
Moonset
10:03 AM
In sign
♓︎ Pisces
Langhorne, PA
Microseason
Jul 1–5

Cicadas claim the afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Langhorne at a glance

  • Today vs. normal: 26°F above the seasonal normal for this latitude
  • Last frost: April 17 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP code: 19047

16-Day Forecast — Langhorne

  1. Sat99°74°51%
  2. Sun91°71°59%
  3. Mon77°71°91%
  4. Tue75°67°87%
  5. Wed80°65°31%
  6. Thu91°68°11%
  7. Fri89°73°38%
  8. Sat88°75°36%
  9. Sun85°71°28%
  10. Mon81°69°21%
  11. Tue87°68°19%
  12. Wed91°68°38%
  13. Thu91°71°40%
  14. Fri95°75°42%
  15. Sat93°75°35%
  16. Sun90°77°40%

Forecast data from Open-Meteo (CC BY 4.0).

Right now in the garden

Peak growing season

As of July 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.

SPC Convective Outlook

Storm Prediction Center — Langhorne

SPC has placed Langhorne in the Slight Risk category for severe thunderstorms today.

  • TODAYSLGTSlight Risk
  • TOMORROWSLGTSlight Risk
  • DAY 3TSTMGeneral Thunderstorms

Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.

Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.

ZIP codes in Langhorne

  • 19047
  • 19048
  • 19049

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.