Jonestown, Pennsylvania Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Jonestown weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Rain55%0.16″98°77°—
- SundayJul 5Light Showers61%0.06″93°73°-5°
- MondayJul 6Thunderstorm93%0.80″81°71°-12°
- TuesdayJul 7Showers77%0.03″81°66°0°
- WednesdayJul 8Light Drizzle16%0.01″72°62°-9°
- ThursdayJul 9Light Drizzle12%—87°64°+15°
- FridayJul 10Light Drizzle52%0.02″83°68°-4°
AQI 88 (Moderate), driven by Ozone. AQI up 33 in the last 6 hours — air quality is degrading. Ozone at AQI 50. Overcast through the UV peak window (cloud cover ~82%) — afternoon ozone should stay flat.
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 50. Overcast through the UV peak window (cloud cover ~82%) — afternoon ozone should stay flat.
- Present
- AQI 50
- UV peak
- 0.4 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 6
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 5.5 µg/m³, PM10 to 5.7 µg/m³.
- PM2.5/PM10
- 0.96
- Wind
- light
- 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
- 11:00 PM
- Moonset
- 10:09 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Jonestown at a glance
- Today vs. normal: 26°F above the seasonal normal for this latitude
- Last frost: April 18 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 17038
16-Day Forecast — Jonestown
- Sat98°77°55%
- Sun93°73°61%
- Mon81°71°93%
- Tue81°66°77%
- Wed72°62°16%
- Thu87°64°12%
- Fri83°68°52%
- Sat87°67°30%
- Sun78°64°25%
- Mon82°63°18%
- Tue84°62°18%
- Wed86°60°36%
- Thu89°63°48%
- Fri84°65°41%
- Sat89°67°40%
- Sun85°71°55%
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 — Jonestown
SPC has placed Jonestown 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 Jonestown
- 17038