Harlansburg, Pennsylvania Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Harlansburg weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Showers69%0.46″91°68°—
- SundayJul 5Foggy60%—83°68°-8°
- MondayJul 6Thunderstorm74%0.15″78°65°-5°
- TuesdayJul 7Light Showers51%—76°62°-2°
- WednesdayJul 8Overcast20%—81°59°+5°
- ThursdayJul 9Light Drizzle47%—78°63°-3°
- FridayJul 10Light Drizzle49%—79°63°+1°
AQI 45 (Good), driven by PM2.5. AQI down 10 over the last 6 hours (gradual decline). PM2.5 at 10.3 µg/m³ (AQI 53) with a 0.96 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 10.3 µg/m³ (AQI 53) with a 0.96 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.96
- 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
- 11:16 PM
- Moonset
- 10:23 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Harlansburg at a glance
- Today vs. normal: 69°F — typical for the season
- Last frost: April 22 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
15-Day Forecast — Harlansburg
- Sat91°68°69%
- Sun83°68°60%
- Mon78°65°74%
- Tue76°62°51%
- Wed81°59°20%
- Thu78°63°47%
- Fri79°63°49%
- Sat82°60°37%
- Sun78°62°26%
- Mon81°58°20%
- Tue80°63°20%
- Wed71°56°40%
- Thu79°55°39%
- Fri82°62°49%
- Sat78°65°35%
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 — Harlansburg
SPC has placed Harlansburg 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 Harlansburg
- 16101
- 16057