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 4Drizzle32%0.05″98°73°—
- SundayJul 5Drizzle91%0.06″93°71°-5°
- MondayJul 6Light Showers91%0.38″72°63°-21°
- TuesdayJul 7Drizzle55%0.04″78°60°+6°
- WednesdayJul 8Overcast14%—85°57°+7°
- ThursdayJul 9Overcast39%—88°62°+3°
- FridayJul 10Light Drizzle47%—82°67°-6°
AQI 50 (Good), driven by Ozone. AQI up 5 over the last 6 hours (gradual rise). Ozone at AQI 46 now. With UV 4.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 29 around 1 PM.
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 46 now. With UV 4.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 29 around 1 PM.
- Present
- AQI 46
- UV peak
- 4.7 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 29
PM × Wind × Precip
PM2.5 at 7.3 µg/m³ (AQI 41) with a 0.91 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.91
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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: 9°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
- Sat98°73°32%
- Sun93°71°91%
- Mon72°63°91%
- Tue78°60°55%
- Wed85°57°14%
- Thu88°62°39%
- Fri82°67°47%
- Sat87°68°28%
- Sun69°65°28%
- Mon72°64°22%
- Tue82°63°23%
- Wed87°63°26%
- Thu94°68°32%
- Fri93°71°35%
- Sat82°69°43%
- Sun87°64°36%
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
- TOMORROWTSTMGeneral Thunderstorms
- 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