Mount Vernon, Kentucky Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Mount Vernon weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Rain20%0.12″88°66°—
- SundayJul 5Overcast23%—88°69°0°
- MondayJul 6Drizzle53%0.03″84°68°-4°
- TuesdayJul 7Drizzle42%—79°65°-5°
- WednesdayJul 8Overcast20%—83°62°+4°
- ThursdayJul 9Partly Cloudy22%—86°64°+3°
- FridayJul 10Drizzle67%0.02″82°67°-4°
AQI 47 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 9.3 µg/m³ (AQI 51) with a 0.94 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.
What's driving it
Ozone × UV × Sky
Ozone at AQI 34. Overcast through the UV peak window (cloud cover ~79%) — afternoon ozone should stay flat.
- Present
- AQI 34
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 4
PM × Wind × Precip
PM2.5 at 9.3 µg/m³ (AQI 51) with a 0.94 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.94
- 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
- 11:53 PM
- Moonset
- 11:50 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Mount Vernon at a glance
- Today vs. normal: 74°F — typical for the season
- Last frost: March 31 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 40456
16-Day Forecast — Mount Vernon
- Sat88°66°20%
- Sun88°69°23%
- Mon84°68°53%
- Tue79°65°42%
- Wed83°62°20%
- Thu86°64°22%
- Fri82°67°67%
- Sat76°67°49%
- Sun78°63°20%
- Mon82°56°12%
- Tue83°61°8%
- Wed80°63°27%
- Thu81°66°35%
- Fri79°64°30%
- Sat84°66°55%
- Sun89°69°45%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 — Mount Vernon
SPC has placed Mount Vernon in the Marginal Risk category for severe thunderstorms tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWMRGLMarginal Risk
- 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 Mount Vernon
- 40456
- 40473