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Mount Vernon, Ohio Weather

Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →

Mount Vernon weather forecast — hour by hour, 7-day outlook, NOAA radar

Mount Vernon, OH
Saturday, July 4 at 10:44 AM
84
°
Clear
Feels like
92°
Humidity
66%
Wind
7 mph
Sunrise
2:05 AM
Sunset
5:03 PM
Mount Vernon, OH
Hour by hour · 24h
24-Hour ForecastMount Vernon, OH: 24-hour forecast. Temperatures range from 72 to 92 degrees Fahrenheit with a 39% chance of precipitation at 5 PM.
L 72°H 92°
Mount Vernon, OH
7-day forecast
  1. Today
    Jul 4
    Heavy Rain
    39%
    0.71″
    92°71°—
  2. Sunday
    Jul 5
    Overcast
    41%
    —
    88°72°-4°
  3. Monday
    Jul 6
    Thunderstorm
    41%
    —
    79°66°-9°
  4. Tuesday
    Jul 7
    Overcast
    17%
    —
    77°64°-2°
  5. Wednesday
    Jul 8
    Light Drizzle
    11%
    —
    84°64°+7°
  6. Thursday
    Jul 9
    Thunderstorm
    46%
    —
    82°65°-2°
  7. Friday
    Jul 10
    Thunderstorm
    48%
    —
    77°69°-5°
Mount Vernon, OH
Next 24 hours · Warm now
HOT 90°66°81°96°6a12p6p12anow 83°high 92°low 72°PRECIP %
Mount Vernon, OH
Anemometer · 24h winds · from true
NESW
From · True
SSW
192° · backing 56°
Direction
SSW
192°
Sustained
7
mph
Gust
10
mph
Peak 24h
23
avg 6
Beaufort · 2 · LIGHT BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 6 · pk 23 @ 10:00p
0102030MPHB1B2B3B4B5B6-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 235SUSTGUST
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Mount Vernon, OH
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
981.8
+0.3 mb in 3h · steady · 28.99 inHg
Now
981.8
mb
3h
+0.3
mb
12h
-2.1
mb
24h
-3.3
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 982–986
975980985990-21h-18h-15h-12h-9h-6h-3h-24hNOW985.5981.5981.8
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Mount Vernon, OH
Air quality
31
AQI
Good
↓-5 in 6h▲Peak ~74 @ 9 PM

AQI 31 (Good), driven by Ozone. AQI down 5 over the last 6 hours (gradual decline). Ozone at AQI 50 now. With UV 5.1 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 24 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.

PM 2.5Good
7.5μg/m³
PM 10Good
8μg/m³
NO₂Good
3μg/m³
OzoneDRIVERUnhealthy SG
106μg/m³
UV IndexModerate
3.6

What's driving it

Ozone × UV × Sky

Ozone at AQI 50 now. With UV 5.1 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 24 around 1 PM.

Present
AQI 50
UV peak
5.1 at 1 PM
Sky at peak
partly cloudy
Projected peak
AQI 24

PM × Wind × Precip

PM2.5 at 7.5 µg/m³, PM10 at 8.4 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.89
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).

7-DAY AQI TREND50100SATSUNMONTUEWEDTHUFRISAT7-DAY PM2.5 TREND · μg/m³300
Mount Vernon, OH
Sky cover · visibility · 24h
Cloud cover
0%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
52.4mi
UNLIMITED
78 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
14:44 UTC · Mount Vernon, OH · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
14:44 UTC · Mount Vernon, OH · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Mount Vernon, OH
Satellite · infrared · animated
Mount Vernon, OH
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Mount Vernon, OH
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:33 AM
Sunrise
2:05 AM
Daylight
14h 58m
Sunset
5:03 PM
Civil dusk
9:37 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Mount Vernon, OH
The moon
Waning Gibbous
81% illuminated
Moonrise
11:25 PM
Moonset
10:34 AM
In sign
♓︎ Pisces
Mount Vernon, OH
Microseason
Jul 1–5

Cicadas claim the scorching afternoon

bird
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Mount Vernon at a glance

  • Today vs. normal: 13°F above the seasonal normal for this latitude
  • Last frost: April 18 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP code: 43050

16-Day Forecast — Mount Vernon

  1. Sat92°71°39%
  2. Sun88°72°41%
  3. Mon79°66°41%
  4. Tue77°64°17%
  5. Wed84°64°11%
  6. Thu82°65°46%
  7. Fri77°69°48%
  8. Sat84°67°39%
  9. Sun73°61°24%
  10. Mon63°55°12%
  11. Tue78°60°12%
  12. Wed82°64°27%
  13. Thu84°66°24%
  14. Fri85°68°19%
  15. Sat84°68°44%
  16. Sun86°68°35%

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 — Mount Vernon

SPC has placed Mount Vernon 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.

January 1–5: Frost quiets the live oaks.January 6–10: Still water thickens with ice.January 11–15: Springs begin to move beneath ice.January 16–20: Cardinal dawn calls grow bolder.January 21–25: Late January thaw pulses.January 26–31: Last freeze locks the land.February 1–5: February's lengthening light.February 6–10: Warming winds thaw the margin.February 11–15: Magnolia blooms break the gray.February 16–20: Mockingbirds resume the dawn chorus.February 21–25: Rain replaces the last snow.February 26–28: Mist clings to greening valleys.March 1–5: The green pulse awakens.March 6–10: Hibernators emerge to call.March 11–15: Dogwood and redbud ignite.March 16–20: Swallowtails emerge from winter silk.March 21–25: Light crowns the dogwood canopy.March 26–31: Redbud cascades over the thaw.April 1–5: Thunder announces the wet season.April 6–10: Barn swallows carve the warming sky.April 11–15: Magnolia blooms and falls in a breath.April 16–20: First rainbows arch over thunderheads.April 21–25: Reeds push through marsh water.April 26–30: Frost retreats; seedlings rise free.May 1–5: Warblers flood the canopy in waves.May 6–10: Tulip poplar lights the forest crown.May 11–15: Shad pulse upstream through rapids.May 16–20: Roses open on the Piedmont edge.May 21–25: Fireflies scout the humid dusk.May 26–31: Frog choruses rise from every wetland.June 1–5: Fireflies pulse through the magnolias.June 6–10: Kudzu climbs deeper into green.June 11–15: Sun climbs to its northern throne.June 16–20: Heat settles and the rain begins.June 21–25: The longest day turns toward shadow.June 26–30: Fireflies drift through Spanish moss.July 1–5: Cicadas claim the scorching afternoon.July 6–10: Thunderheads boil and break at dusk.July 11–15: Thunder builds each drowsy afternoon.July 16–20: Cicadas claim the long noon.July 21–25: Dog days drape the earth in haze.July 26–31: Katydids begin their rasping chorus.August 1–5: Dusk arrives one minute earlier each night.August 6–10: Meteorological summer's turning page.August 11–15: Cool winds gather at the margins.August 16–20: Dog-day cicadas rise.August 21–25: Heat breaks in creek beds.August 26–31: Monarchs gather strength.September 1–5: Harvests begin in earnest.September 6–10: Dew beads on resurrection fern.September 11–15: Raptors trail the thermals.September 16–20: Day and dark find balance.September 21–25: Thunder quiets the land.September 26–30: Insects retreat below.October 1–5: Swamp waters recede.October 6–10: Maples ignite the ridge.October 11–15: Asters crown the meadows.October 16–20: Crickets sing at dusk.October 21–25: Frost paints the garden.October 26–31: Light rains whisper down.November 1–5: Sweetgum Turns Crimson.November 6–10: Camellia Blooms Break Through.November 11–15: Earth Stiffens Underfoot.November 16–20: Bare Limbs Hold the Light.November 21–25: First Frost Grips the High Ground.November 26–30: North Wind Strips the Last Leaves.December 1–5: Darkness Falls Before Dinner.December 6–10: Winter Locks the Land.December 11–15: Wildlife Retreats to Shelter.December 16–20: Ice Edges Deepen Inward.December 21–25: The Sun Begins its Return.December 26–31: The Year Turns in Silence.🌱February 14 — First skunk-cabbage spathes thaw their way up☀️March 20 — Spring equinox — day and night balance🌸April 5 — Cherry blossoms peak in the parks🐦May 10 — Warbler migration peaks along the coast✨May 25 — First fireflies scout the meadows at dusk🌞June 21 — Summer solstice — longest day🦗July 25 — Peak cicada chorus in the afternoons🌊August 18 — Warmest sea-surface temperatures of the year🍂September 22 — Autumn equinox — the slow turn❄️October 25 — First widespread frost in the suburbs🍁November 10 — Peak leaf color across the Hudson Valley🌙December 21 — Winter solstice — longest night

Microseason · July 1–5

Cicadas claim the scorching afternoon

Dog-day cicadas emerge in waves, their rasp dominating every sunny hour; heat peaks above 90 degrees daily.

Day 185 of 365 · Wedge 37 of 72

The solar year drawn as a wheel of 72 five-day windows. Each wedge is one microseason; the four colored arcs mark winter, spring, summer, and autumn; the small icons sit at notable phenological events. The crimson pointer creeps clockwise as the year turns.

Planting calendar

MonthPlantHarvest
January——
February——
March——
Aprillettuce, peas, spinach, radishes—
Maylettuce, peas, spinach, radishes, tomatoes, peppers, beans, squashlettuce, peas, radishes
Junetomatoes, peppers, beans, squashlettuce, peas, radishes
Julytomatoes, peppers, beans, squashtomatoes, beans, summer squash
August—tomatoes, beans, summer squash
Septemberfall brassicas, garlic (overwinter), carrotstomatoes, beans, summer squash
Octoberfall brassicas, garlic (overwinter), carrotswinter squash, tomatoes (last)
November——
December——

A year in weather

In Mount Vernon, July runs warmest near 71°F and January coldest around 26°F, while June is the wettest month (4.9 inches) and February the driest (2.5 inches).

MonthMean tempPrecipRainy days
January26°3.1″7
February28°2.5″6
March37°3.3″8
April48°4.0″9
May58°4.7″9
June67°4.9″9
July71°4.2″8
August69°3.4″6
September62°3.2″6
October51°2.9″6
November40°3.0″7
December31°3.2″7

Regional context

Mount Vernon's climate, from NOAA NCEI 1991-2020 station normals, pairs 26°F Januarys with 71°F Julys — a 45°F swing. About 42.4 inches of precipitation falls over roughly 87 days a year.

Mount Vernon's precipitation spreads evenly: June peaks at 4.9 inches on 8.6 wet days, while February holds 2.5 inches over 6.0 — no month dominates Mount Vernon's rain calendar. That even rhythm groups Mount Vernon with places like South Mount Vernon, OH, Gambier, OH and Fredericktown, OH.

Mount Vernon's growing window opens around mid-April, once Mount Vernon's overnight lows stop freezing — sow kale, peas, spinach, and parsnips. Warm-soil crops in Mount Vernon wait about two weeks past Mount Vernon's last frost, once the soil warms. It shuts near mid-November, when freezes return to Mount Vernon and tender plants need cover. Within Mount Vernon, cold-air pooling chills low spots by 5-10°F, shifting Mount Vernon's local frost dates.

Similar climates: South Mount Vernon, OH, Gambier, OH, Fredericktown, OH, Apple Valley, OH, Howard, OH.

Frequently asked

When does it freeze in Mount Vernon?
In Mount Vernon, expect the last spring frost near mid-April; Mount Vernon's first autumn frost comes around mid-November.
What is the rainy season in Mount Vernon?
June is the wettest month in Mount Vernon, about 4.9 inches on average; the year totals roughly 42 inches.
What is the warmest month in Mount Vernon?
The warmest stretch in Mount Vernon comes in July, around 71°F on average.
What is the coldest month in Mount Vernon?
On average January is the chilliest month in Mount Vernon, about 26°F.
When can I start a vegetable garden in Mount Vernon?
Mount Vernon's last frost (mid-April) cues hardy greens; in Mount Vernon, hold heat-lovers two weeks past.
How many rainy days does Mount Vernon get?
Expect roughly 87 wet days a year in Mount Vernon.
What hardiness zone is Mount Vernon?
Mount Vernon's USDA zone comes from its January mean (26°F); enter the ZIP on the USDA lookup for the number.
What is the 10-day forecast for Mount Vernon?
Mount Vernon's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
Will it rain this week in Mount Vernon?
See this week's day-by-day rain chances for Mount Vernon in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Mount Vernon?
Current conditions for Mount Vernon and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Mount Vernon forecast updated?
The Mount Vernon forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Mount Vernon?
Today's sunrise and sunset times for Mount Vernon are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
How accurate is the weather forecast for Mount Vernon?
The next few days in Mount Vernon's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Mount Vernon's humid subtropical climate in Ohio pairs 26°F Januarys with 71°F Julys, 45°F apart across the seasons.

Mount Vernon sees close to 42 inches of precipitation annually, falling across some 87 wet days.

The 45°F gap between Mount Vernon's summer and winter, at 40.4°N, shapes Mount Vernon's frost calendar.

All cities in Ohio →

Columbus, OH weather →

ZIP codes in Mount Vernon

  • 43050

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.