Harrisburg, Ohio Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Harrisburg weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Partly Cloudy29%—94°73°—
- SundayJul 5Overcast45%—91°74°-3°
- MondayJul 6Thunderstorm45%—82°68°-9°
- TuesdayJul 7Light Drizzle15%—79°64°-3°
- WednesdayJul 8Light Drizzle19%—86°65°+7°
- ThursdayJul 9Light Drizzle50%—83°67°-3°
- FridayJul 10Light Drizzle50%—80°69°-3°
AQI 36 (Good), driven by PM2.5. AQI down 6 over the last 6 hours (gradual decline). PM2.5 at 10.1 µg/m³ (AQI 53) with a 0.86 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 during the projected peak around 8 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 49 now. With UV 5.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 35 around 1 PM.
- Present
- AQI 49
- UV peak
- 5.4 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 35
PM × Wind × Precip
PM2.5 at 10.1 µg/m³ (AQI 53) with a 0.86 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.86
- 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
- 11:27 PM
- Moonset
- 10:37 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Harrisburg at a glance
- Today vs. normal: 14°F above the seasonal normal for this latitude
- Last frost: April 15 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Harrisburg
- Sat94°73°29%
- Sun91°74°45%
- Mon82°68°45%
- Tue79°64°15%
- Wed86°65°19%
- Thu83°67°50%
- Fri80°69°50%
- Sat86°67°32%
- Sun75°63°27%
- Mon69°55°13%
- Tue76°61°15%
- Wed82°64°23%
- Thu85°67°27%
- Fri84°69°26%
- Sat86°68°45%
- Sun87°70°32%
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 — Harrisburg
SPC has placed Harrisburg in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
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 Harrisburg
- 43126