Plymouth, Pennsylvania Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Plymouth weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Rain28%0.23″95°73°—
- SundayJul 5Rain55%0.24″89°72°-6°
- MondayJul 6Light Showers92%0.21″77°66°-12°
- TuesdayJul 7Drizzle76%0.03″78°63°+1°
- WednesdayJul 8Light Drizzle27%—78°62°0°
- ThursdayJul 9Drizzle19%0.06″88°62°+10°
- FridayJul 10Drizzle66%—83°65°-5°
AQI 71 (Moderate), driven by Ozone. AQI up 20 in the last 6 hours — air quality is degrading. Ozone at AQI 68 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
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 68 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 68
- UV peak
- 1.4 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 68
PM × Wind × Precip
PM2.5 at 8.2 µg/m³, PM10 at 8.9 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.92
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 10:59 PM
- Moonset
- 10:06 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Plymouth at a glance
- Today vs. normal: 25°F above the seasonal normal for this latitude
- Last frost: April 23 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 18651
16-Day Forecast — Plymouth
- Sat95°73°28%
- Sun89°71°55%
- Mon77°66°92%
- Tue78°63°76%
- Wed78°62°27%
- Thu88°62°19%
- Fri83°65°66%
- Sat80°67°38%
- Sun79°63°32%
- Mon81°60°28%
- Tue83°59°21%
- Wed85°56°29%
- Thu87°59°43%
- Fri88°61°42%
- Sat88°66°48%
- Sun80°69°52%
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 — Plymouth
SPC has placed Plymouth in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWMRGLMarginal 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 Plymouth
- 18651