St. Clairsville, Ohio Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
St. Clairsville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast33%—92°69°—
- SundayJul 5Light Rain42%0.06″87°69°-5°
- MondayJul 6Thunderstorm81%0.02″79°68°-8°
- TuesdayJul 7Thunderstorm27%—77°65°-2°
- WednesdayJul 8Light Drizzle——82°62°+5°
- ThursdayJul 9Light Drizzle35%—84°61°+2°
- FridayJul 10Drizzle67%0.07″74°67°-10°
AQI 49 (Good), driven by Ozone. Ozone at AQI 90 now. With UV 8.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 98 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 10 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 90 now. With UV 8.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 98 around 1 PM.
- Present
- AQI 90
- UV peak
- 8.2 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 98
PM × Wind × Precip
PM2.5 at 5.4 µg/m³, PM10 at 5.9 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.92
- 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
- 11:18 PM
- Moonset
- 10:27 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
St. Clairsville at a glance
- Today vs. normal: 19°F above the seasonal normal for this latitude
- Last frost: April 16 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — St. Clairsville
- Sat93°69°33%
- Sun87°69°42%
- Mon79°68°81%
- Tue77°65°27%
- Wed82°62°7%
- Thu84°61°35%
- Fri74°67°67%
- Sat80°62°52%
- Sun75°56°24%
- Mon74°54°20%
- Tue77°53°18%
- Wed81°55°29%
- Thu84°58°23%
- Fri77°62°29%
- Sat82°67°29%
- Sun79°66°26%
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 — St. Clairsville
SPC has placed St. Clairsville 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 St. Clairsville
- 43950