Langhorne, Pennsylvania Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Langhorne weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Rain70%0.21″99°72°—
- SundayJul 5Heavy Rain62%0.77″90°73°-9°
- MondayJul 6Rain93%0.37″79°69°-11°
- TuesdayJul 7Light Showers78%—72°65°-7°
- WednesdayJul 8Overcast29%—75°63°+3°
- ThursdayJul 9Light Drizzle19%—91°66°+16°
- FridayJul 10Light Drizzle46%0.02″92°74°+1°
AQI 92 (Moderate), driven by PM2.5. AQI down 33 over the last 6 hours — air quality is improving sharply. PM scrubbed by 2 hours of recent rain — PM2.5 down to 10.6 µg/m³, PM10 to 10.8 µg/m³.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 45. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 45
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 5
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 10.6 µg/m³, PM10 to 10.8 µg/m³.
- PM2.5/PM10
- 0.98
- Wind
- calm
- Recent rain
- 2h in last 6h
- Pattern
- washed out
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:17 PM
- Moonset
- 11:09 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Langhorne at a glance
- Today vs. normal: 3°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
- Sat99°72°70%
- Sun90°73°62%
- Mon79°69°93%
- Tue72°65°78%
- Wed75°63°29%
- Thu91°66°19%
- Fri92°74°46%
- Sat87°67°34%
- Sun76°66°21%
- Mon85°64°16%
- Tue90°66°13%
- Wed92°70°28%
- Thu89°70°31%
- Fri91°68°35%
- Sat89°69°29%
- Sun95°77°39%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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