Mount Vernon, Arkansas Weather
Heat settles and the rain begins. Day 90 of spring. Read this microseason across nine climate regions →
Mount Vernon weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 17Thunderstorm——92°68°—
- ThursdayJun 18Thunderstorm23%—94°73°+2°
- FridayJun 19Light Showers38%0.02″81°69°-13°
- SaturdayJun 20Light Drizzle42%—89°70°+8°
- SundayJun 21T-storm w/ Hvy Hail39%—90°68°+1°
- MondayJun 22Showers59%0.25″76°64°-14°
- TuesdayJun 23Light Drizzle33%—75°64°-1°
AQI 28 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±4 points). PM2.5 at 9.4 µg/m³, PM10 at 10.2 µg/m³ — typical background levels with no transport signature.
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 43 now. With UV 6.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 39 around 1 PM.
- Present
- AQI 43
- UV peak
- 6.8 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 39
PM × Wind × Precip
PM2.5 at 9.4 µg/m³, PM10 at 10.2 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 8:24 AM
- Moonset
- 10:30 PM
- In sign
- ♌︎ Leo
Heat settles and the rain begins
Mount Vernon at a glance
- Today vs. normal: 4°F above the seasonal normal for this latitude
- Last frost: March 18 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Mount Vernon
- Wed92°68°1%
- Thu94°73°23%
- Fri81°69°38%
- Sat89°70°42%
- Sun90°68°39%
- Mon76°64°59%
- Tue75°64°33%
- Wed84°68°28%
- Thu87°65°21%
- Fri94°70°21%
- Sat93°72°17%
- Sun94°73°25%
- Mon89°72°29%
- Tue81°71°24%
- Wed89°66°20%
- Thu80°63°29%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 17, 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.
- TODAYNONENo severe risk
- 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
- 72111