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 4Overcast13%—94°73°—
- SundayJul 5Overcast32%—91°73°-3°
- MondayJul 6Thunderstorm68%—82°68°-9°
- TuesdayJul 7Light Drizzle15%—79°64°-3°
- WednesdayJul 8Light Drizzle——86°65°+7°
- ThursdayJul 9Light Drizzle34%—83°67°-3°
- FridayJul 10Light Drizzle59%—80°69°-3°
AQI 38 (Good), driven by Ozone. Ozone at AQI 100 now. With UV 8.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 78 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 100 now. With UV 8.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 78 around 1 PM.
- Present
- AQI 100
- UV peak
- 8.3 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 78
PM × Wind × Precip
PM2.5 at 12.0 µg/m³, PM10 at 14.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.82
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- background
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: 20°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°13%
- Sun91°73°32%
- Mon82°68°68%
- Tue79°64°15%
- Wed86°65°8%
- Thu83°67°34%
- Fri80°69°59%
- Sat86°67°32%
- Sun75°63°15%
- Mon69°55°14%
- Tue76°61°12%
- 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 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 Harrisburg
- 43126