Cynthiana, Ohio Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Cynthiana weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Mostly Clear16%—93°72°—
- SundayJul 5Overcast39%—89°72°-4°
- MondayJul 6Thunderstorm61%—84°68°-5°
- TuesdayJul 7Overcast19%—84°63°0°
- WednesdayJul 8Mostly Clear10%—89°64°+5°
- ThursdayJul 9Light Drizzle30%—88°66°-1°
- FridayJul 10Drizzle59%—78°70°-10°
AQI 40 (Good), driven by Ozone. AQI down 8 over the last 6 hours (gradual decline). Ozone at AQI 104 now. With UV 6.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 85 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 9 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 104 now. With UV 6.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 85 around 1 PM.
- Present
- AQI 104
- UV peak
- 6.1 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 85
PM × Wind × Precip
PM2.5 at 9.1 µg/m³, PM10 at 10.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.87
- Wind
- light
- 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
- 11:26 PM
- Moonset
- 10:39 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Cynthiana at a glance
- Today vs. normal: 14°F above the seasonal normal for this latitude
- Last frost: April 11 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 45624
16-Day Forecast — Cynthiana
- Sat93°72°16%
- Sun89°72°39%
- Mon84°68°61%
- Tue84°63°19%
- Wed89°64°10%
- Thu88°66°30%
- Fri78°70°59%
- Sat87°66°42%
- Sun78°61°18%
- Mon67°56°15%
- Tue80°60°12%
- Wed85°62°22%
- Thu88°66°26%
- Fri92°69°19%
- Sat83°68°42%
- Sun90°70°29%
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 — Cynthiana
SPC has placed Cynthiana 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 Cynthiana
- 45612
- 45624