Julian, Pennsylvania Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Julian weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast41%—94°69°—
- SundayJul 5Heavy Rain92%1.2″88°69°-6°
- MondayJul 6T-storm w/ Hail79%0.09″74°64°-14°
- TuesdayJul 7Heavy Drizzle67%0.15″78°63°+4°
- WednesdayJul 8Overcast13%—84°59°+6°
- ThursdayJul 9Light Drizzle40%—86°64°+2°
- FridayJul 10Light Drizzle45%—85°66°-1°
AQI 55 (Moderate), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 44 now. With UV 4.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 23 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 44 now. With UV 4.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 23 around 1 PM.
- Present
- AQI 44
- UV peak
- 4.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 23
PM × Wind × Precip
PM2.5 at 7.3 µg/m³ (AQI 41) with a 0.95 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.95
- 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
- 11:06 PM
- Moonset
- 10:14 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Julian at a glance
- Today vs. normal: 8°F above the seasonal normal for this latitude
- Last frost: April 21 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 16844
16-Day Forecast — Julian
- Sat94°69°41%
- Sun88°69°92%
- Mon74°64°79%
- Tue78°63°67%
- Wed84°59°13%
- Thu86°64°40%
- Fri85°66°45%
- Sat83°68°36%
- Sun78°65°28%
- Mon77°63°16%
- Tue78°64°16%
- Wed86°66°29%
- Thu90°68°29%
- Fri90°70°39%
- Sat85°70°31%
- Sun86°65°41%
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 — Julian
SPC has placed Julian 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 Julian
- 16844