Weather StoryAlmanac, microseasons, and the day's weather story.

Olde West Chester, Ohio Weather

Heat settles and the rain begins. Day 90 of spring. Read this microseason across nine climate regions →

Olde West Chester weather forecast — hour by hour, 7-day outlook, NOAA radar

Olde West Chester, OH
Wednesday, June 17 at 10:15 AM
71
°
Clear
Feels like
72°
Humidity
63%
Wind
6 mph
Sunrise
2:10 AM
Sunset
5:06 PM
Olde West Chester, OH
Hour by hour · 24h
24-Hour ForecastOlde West Chester, OH: 24-hour forecast. Temperatures range from 68 to 83 degrees Fahrenheit with a 58% chance of precipitation at 2 AM.
L 68°H 83°
Olde West Chester, OH
7-day forecast
  1. Today
    Jun 17
    Light Drizzle
    26%
    0.02″
    83°59°—
  2. Thursday
    Jun 18
    Heavy Rain
    58%
    0.82″
    75°64°-8°
  3. Friday
    Jun 19
    Overcast
    —
    —
    75°55°0°
  4. Saturday
    Jun 20
    Overcast
    —
    —
    78°58°+3°
  5. Sunday
    Jun 21
    Heavy Showers
    66%
    1.1″
    69°59°-9°
  6. Monday
    Jun 22
    Overcast
    66%
    —
    70°51°+1°
  7. Tuesday
    Jun 23
    Overcast
    15%
    —
    75°53°+5°
Olde West Chester, OH
Next 24 hours · Mild now
64°76°88°6a12p6p12anow 70°high 83°low 68°PRECIP %
Olde West Chester, OH
Anemometer · 24h winds · from true
NESW
From · True
SW
231° · veering 15°
Direction
SW
231°
Sustained
6
mph
Gust
15
mph
Peak 24h
22
avg 7
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 7 · pk 22 @ 7:00p
010203040MPHB1B2B3B4B5B6B7B8-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 4115SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 15° from the sw.
Olde West Chester, OH
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
983.0
+1.6 mb in 3h · rising · 29.03 inHg
Now
983.0
mb
3h
+1.6
mb
12h
+1.4
mb
24h
-2.7
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 981–986
975980985990-21h-18h-15h-12h-9h-6h-3h-24hNOW985.9981.1983.2
−24h−18h−12h−6hnow
The low is filling — pressure climbing out of storm territory.
Olde West Chester, OH
Air quality
30
AQI
Good
↓-11 in 6h▲Peak ~45 @ 8 PM

AQI 30 (Good), driven by PM2.5. AQI down 11 over the last 6 hours (gradual decline). PM2.5 at 7.9 µg/m³ (AQI 44) with a 0.94 fine-to-coarse ratio and 6 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 during the projected peak around 8 PM.

PM 2.5DRIVERGood
7.9μg/m³
PM 10Good
8μg/m³
NO₂Good
5μg/m³
OzoneModerate
87μg/m³
UV IndexModerate
3.7

What's driving it

Ozone × UV × Sky

Ozone at AQI 41 now. With UV 5.2 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 20 around 1 PM.

Present
AQI 41
UV peak
5.2 at 1 PM
Sky at peak
partly cloudy
Projected peak
AQI 20

PM × Wind × Precip

PM2.5 at 7.9 µg/m³ (AQI 44) with a 0.94 fine-to-coarse ratio and 6 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).

7-DAY AQI TREND50100WEDTHUFRISATSUNMONTUEWED7-DAY PM2.5 TREND · μg/m³300
Olde West Chester, OH
Sky cover · visibility · 24h
Cloud cover
0%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
57.7mi
UNLIMITED
103 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
14:15 UTC · Olde West Chester, 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
14:15 UTC · Olde West Chester, OH · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Olde West Chester, OH
Satellite · infrared · animated
Olde West Chester, OH
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Olde West Chester, OH
Almanac · Wednesday, June 17
A summer fog for fair, a winter fog for rain.
Civil dawn
5:39 AM
Sunrise
2:10 AM
Daylight
14h 56m
Sunset
5:06 PM
Civil dusk
9:40 PM
Planting note
Stake and prune tomato suckers. Watch for squash vine borers.
Olde West Chester, OH
The moon
Waxing Crescent
9% illuminated
Moonrise
8:39 AM
Moonset
11:12 PM
In sign
♌︎ Leo
Olde West Chester, OH
Microseason
Jun 16–20

Heat settles and the rain begins

bird
Jan 146% of the yearDec 31

Read this microseason across nine climate regions →

Olde West Chester at a glance

  • Today vs. normal: 5°F below the seasonal normal for this latitude
  • Last frost: April 12 (climatological average for this latitude)
  • Microseason: Jun 16–20
  • Planting window: Stake and prune tomato suckers. Watch for squash vine borers.

16-Day Forecast — Olde West Chester

  1. Wed83°59°26%
  2. Thu75°64°58%
  3. Fri75°55°7%
  4. Sat78°58°5%
  5. Sun69°59°66%
  6. Mon70°51°66%
  7. Tue75°53°15%
  8. Wed71°58°7%
  9. Thu81°60°14%
  10. Fri82°63°23%
  11. Sat83°66°25%
  12. Sun83°68°39%
  13. Mon90°72°49%
  14. Tue80°69°44%
  15. Wed83°68°39%
  16. Thu77°61°56%

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 — Olde West Chester

SPC has placed Olde West Chester in the Slight Risk category for severe thunderstorms today.

  • TODAYSLGTSlight Risk
  • TOMORROWTSTMGeneral Thunderstorms
  • DAY 3NONENo severe risk

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.

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 · June 16–20

Heat settles and the rain begins

Summer heat locks in; afternoon thunderstorms arrive with humid intensity, feeding kudzu and swamp vegetation.

Day 168 of 365 · Wedge 34 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

July is Olde West Chester's warmest stretch (~78°F) and January its coldest (~30°F); precipitation crests in May at 4.4 inches and ebbs in September to 2.3 inches.

MonthMean tempPrecipRainy days
January30°3.0″16
February34°3.0″15
March43°4.1″17
April55°4.2″18
May63°4.4″18
June73°3.6″16
July78°3.4″17
August77°3.0″16
September70°2.3″13
October58°2.6″11
November44°3.1″14
December34°3.9″16

Frequently asked

When does it freeze in Olde West Chester?
Frost typically leaves Olde West Chester by mid-April and returns to Olde West Chester near mid-November.
What is the rainy season in Olde West Chester?
Rainfall in Olde West Chester peaks in May near 4.4 inches, out of about 41 inches annually.
What is the warmest month in Olde West Chester?
The warmest stretch in Olde West Chester comes in July, around 78°F on average.
What is the coldest month in Olde West Chester?
On average January is the chilliest month in Olde West Chester, about 30°F.
When can I start a vegetable garden in Olde West Chester?
Time tomatoes in Olde West Chester for two weeks after mid-April; peas and greens start at Olde West Chester's frost line.
How many rainy days does Olde West Chester get?
Olde West Chester records around 187 days of measurable precipitation annually.
What hardiness zone is Olde West Chester?
Olde West Chester's USDA zone comes from its January mean (30°F); enter the ZIP on the USDA lookup for the number.
What is the 10-day forecast for Olde West Chester?
Olde West Chester'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 Olde West Chester?
See this week's day-by-day rain chances for Olde West Chester in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Olde West Chester?
Current conditions for Olde West Chester and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Olde West Chester forecast updated?
The Olde West Chester forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Olde West Chester?
Day length in Olde West Chester peaks around the June solstice — earliest sunrise and latest sunset — and is shortest near the December solstice.
How accurate is the weather forecast for Olde West Chester?
The next few days in Olde West Chester's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Olde West Chester, Ohio has a humid subtropical climate: January averages roughly 30°F, July about 78°F, 48°F between them.

Olde West Chester sees close to 41 inches of precipitation annually, falling across some 187 wet days.

At 39.3°N, Olde West Chester's 48°F summer-to-winter swing sets when Olde West Chester's gardens wake and when frost returns.

All cities in Ohio →

Hamilton, OH weather →

ZIP codes in Olde West Chester

  • 45069
  • 45071

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.