Marietta, Ohio Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Marietta weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Showers58%0.87″94°72°—
- SundayJul 5Rain41%0.32″90°70°-4°
- MondayJul 6Thunderstorm71%—88°70°-2°
- TuesdayJul 7Thunderstorm33%—82°66°-6°
- WednesdayJul 8Overcast11%—88°61°+6°
- ThursdayJul 9Light Drizzle28%—90°63°+2°
- FridayJul 10Light Showers70%0.37″74°68°-16°
AQI 82 (Moderate), driven by Ozone. AQI up 43 in the last 6 hours — air quality is degrading. Ozone at AQI 81 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
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 81 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 81
- UV peak
- 2.9 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 81
PM × Wind × Precip
PM2.5 at 7.1 µg/m³, PM10 at 7.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.93
- Wind
- breezy
- Recent rain
- 1h 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
- 11:19 PM
- Moonset
- 10:31 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Marietta at a glance
- Today vs. normal: 11°F above the seasonal normal for this latitude
- Last frost: April 13 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 45750
16-Day Forecast — Marietta
- Sat94°72°58%
- Sun90°70°41%
- Mon88°70°71%
- Tue82°66°33%
- Wed88°61°11%
- Thu90°63°28%
- Fri74°68°70%
- Sat86°65°51%
- Sun82°61°23%
- Mon80°56°18%
- Tue82°56°14%
- Wed88°56°29%
- Thu88°61°26%
- Fri88°65°26%
- Sat83°69°32%
- Sun82°69°42%
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 — Marietta
SPC has placed Marietta 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 Marietta
- 45750