Llewellyn, Pennsylvania Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Llewellyn weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain70%1.6″94°73°—
- SundayJul 5Heavy Rain67%0.47″84°71°-10°
- MondayJul 6Rain92%0.08″81°63°-3°
- TuesdayJul 7Drizzle80%0.03″70°63°-11°
- WednesdayJul 8Light Drizzle19%0.01″71°60°+1°
- ThursdayJul 9Light Drizzle14%—88°63°+17°
- FridayJul 10Light Drizzle57%0.01″80°65°-8°
AQI 53 (Moderate), driven by PM2.5. AQI down 15 over the last 6 hours — air quality is improving sharply. PM scrubbed by 3 hours of recent rain — PM2.5 down to 9.3 µg/m³, PM10 to 9.5 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 36. Overcast through the UV peak window (cloud cover ~99%) — afternoon ozone should stay flat.
- Present
- AQI 36
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 4
PM × Wind × Precip
PM scrubbed by 3 hours of recent rain — PM2.5 down to 9.3 µg/m³, PM10 to 9.5 µg/m³.
- PM2.5/PM10
- 0.98
- Wind
- calm
- Recent rain
- 3h 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
- 11:23 PM
- Moonset
- 11:14 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Llewellyn at a glance
- Today vs. normal: 73°F — typical for the season
- Last frost: April 20 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 17944
16-Day Forecast — Llewellyn
- Sat94°73°70%
- Sun84°71°67%
- Mon81°63°92%
- Tue70°63°80%
- Wed71°60°19%
- Thu88°63°14%
- Fri80°65°57%
- Sat85°58°26%
- Sun80°59°27%
- Mon84°54°20%
- Tue86°59°19%
- Wed79°62°44%
- Thu83°58°36%
- Fri85°59°28%
- Sat82°64°45%
- Sun86°68°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 — Llewellyn
SPC has placed Llewellyn 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 Llewellyn
- 17944
- 17901