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

Hornell, New York Weather

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

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

Hornell, NY
Saturday, July 4 at 4:07 PM
87
°
Mostly Clear
Feels like
88°
Humidity
45%
Wind
11 mph
Sunrise
1:39 AM
Sunset
4:50 PM
Hornell, NY
Hour by hour · 24h
24-Hour ForecastHornell, NY: 24-hour forecast. Temperatures range from 67 to 87 degrees Fahrenheit with a 27% chance of precipitation at 3 PM.
L 67°H 87°
Hornell, NY
7-day forecast
  1. Today
    Jul 4
    Light Drizzle
    16%
    0.01″
    87°71°—
  2. Sunday
    Jul 5
    Overcast
    27%
    —
    80°67°-7°
  3. Monday
    Jul 6
    Drizzle
    80%
    0.24″
    70°63°-10°
  4. Tuesday
    Jul 7
    Thunderstorm
    50%
    0.21″
    76°64°+6°
  5. Wednesday
    Jul 8
    Light Showers
    14%
    0.03″
    75°64°-1°
  6. Thursday
    Jul 9
    Light Drizzle
    37%
    0.04″
    76°60°+1°
  7. Friday
    Jul 10
    Drizzle
    62%
    —
    79°67°+3°
Hornell, NY
Next 24 hours · Warm now
HOT 90°62°77°92°12p6p12a6anow 87°high 87°low 67°PRECIP %
Hornell, NY
Anemometer · 24h winds · from true
NESW
From · True
WNW
286° · veering 18°
Direction
WNW
286°
Sustained
11
mph
Gust
17
mph
Peak 24h
22
avg 6
Beaufort · 3 · GENTLE 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 22 @ 3:00a
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 196SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 18° from the wnw.
Hornell, NY
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
973.4
-1.3 mb in 3h · falling · 28.74 inHg
Now
973.4
mb
3h
-1.3
mb
12h
+0.9
mb
24h
-0.8
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 973–975
965970975980-21h-18h-15h-12h-9h-6h-3h-24hNOW975.1972.5973.4
−24h−18h−12h−6hnow
Deep low still deepening — rough seas, strong wind, persistent rain.
Hornell, NY
Air quality
49
AQI
Good
→+4 in 6h

AQI 49 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±4 points). PM2.5 at 8.8 µg/m³, PM10 at 9.6 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.

PM 2.5DRIVERGood
8.8μg/m³
PM 10Good
10μg/m³
NO₂Good
1μg/m³
OzoneModerate
99μg/m³
UV IndexLow
2.0

What's driving it

Ozone × UV × Sky

Ozone at AQI 47 — peak already passed at 1 PM under clear skies. Levels should ease through evening.

Present
AQI 47
UV peak
1.8 at earlier today
Sky at peak
clear
Projected peak
AQI 47

PM × Wind × Precip

PM2.5 at 8.8 µg/m³, PM10 at 9.6 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).

7-DAY AQI TREND50100SATSUNMONTUEWEDTHUFRISAT7-DAY PM2.5 TREND · μg/m³300
Hornell, NY
Sky cover · visibility · 24h
Cloud cover
22%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
79.9mi
UNLIMITED
81 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
20:07 UTC · Hornell, NY · 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
20:07 UTC · Hornell, NY · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Hornell, NY
Satellite · infrared · animated
Hornell, NY
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Hornell, NY
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:06 AM
Sunrise
1:39 AM
Daylight
15h 11m
Sunset
4:50 PM
Civil dusk
9:26 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Hornell, NY
The moon
Waning Gibbous
79% illuminated
Moonrise
11:08 PM
Moonset
10:11 AM
In sign
♓︎ Pisces
Hornell, NY
Microseason
Jul 1–5

Cicadas claim the afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Hornell at a glance

  • Today vs. normal: 18°F above the seasonal normal for this latitude
  • Last frost: April 30 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP code: 14843

16-Day Forecast — Hornell

  1. Sat88°71°16%
  2. Sun80°66°27%
  3. Mon70°63°80%
  4. Tue76°64°50%
  5. Wed75°64°14%
  6. Thu76°60°37%
  7. Fri79°67°62%
  8. Sat73°61°27%
  9. Sun71°52°23%
  10. Mon73°53°33%
  11. Tue75°54°23%
  12. Wed79°52°39%
  13. Thu79°63°39%
  14. Fri85°60°48%
  15. Sat85°67°50%
  16. Sun72°64°42%

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 — Hornell

SPC has placed Hornell 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: The year turns in silence.January 6–10: Ice thickens on still water.January 11–15: Shortest shadows lengthen.January 16–20: Pheasants begin to call.January 21–25: Springs begin to thaw.January 26–31: Chickadees announce dawn.February 1–5: East wind softens the frost.February 6–10: Sap begins to rise.February 11–15: First snowdrops appear.February 16–20: Red-winged blackbirds return.February 21–25: Rain begins to replace snow.February 26–28: Skunk cabbage pushes through ice.March 1–5: Ice withdraws from the reservoir.March 6–10: Crocuses open to weak sun.March 11–15: Peepers call from the marsh.March 16–20: Woodcocks spiral at dusk.March 21–25: Equinox — light overtakes dark.March 26–31: Forsythia opens along the fences.April 1–5: Cherry blossoms drift like snow.April 6–10: Warblers appear in the understory.April 11–15: Magnolias bloom and fall in a day.April 16–20: Dogwoods float above the forest.April 21–25: Lilacs perfume the evening.April 26–30: Last frost releases the garden.May 1–5: Warblers flood the Ramble.May 6–10: Tulip poplars light their candles.May 11–15: Shad run up the rivers.May 16–20: Roses open along the stoops.May 21–25: Firefly scouts appear at dusk.May 26–31: Strawberries ripen in the sun.June 1–5: Fireflies rise from the lawn.June 6–10: Elderflowers open in hedgerows.June 11–15: Solstice approaches — longest light.June 16–20: Honeysuckle sweetens the night.June 21–25: Solstice — the sun stands still.June 26–30: Lightning bugs drift through oaks.July 1–5: Cicadas claim the afternoon.July 6–10: Queen Anne's lace lines the roads.July 11–15: Thunder builds each afternoon.July 16–20: Corn reaches for the tassels.July 21–25: Dog days settle in the haze.July 26–31: Katydids begin their chorus.August 1–5: Night falls a minute earlier.August 6–10: Sunflowers face the morning.August 11–15: Goldenrod begins to bloom.August 16–20: Crickets pulse through warm nights.August 21–25: First cool morning surprises.August 26–31: Monarchs stage for flight.September 1–5: School buses reappear.September 6–10: Asters purple the roadsides.September 11–15: Hawk migration over the Hudson.September 16–20: Equinox — dark overtakes light.September 21–25: Apples hang heavy on the branch.September 26–30: Geese begin to chevron south.October 1–5: Witch hazel blooms as others fade.October 6–10: Maples begin to blaze.October 11–15: Frost paints the garden black.October 16–20: Oaks turn bronze and russet.October 21–25: Leaves rattle down the gutters.October 26–31: Clocks fall back — dusk at five.November 1–5: Ginkgos drop overnight.November 6–10: Last leaves cling stubbornly.November 11–15: Juncos arrive from the north.November 16–20: Bare branches reveal the sky.November 21–25: First flurries dust the rooftops.November 26–30: Woodsmoke curls through the block.December 1–5: Darkness settles before dinner.December 6–10: Holly and winterberry persist.December 11–15: Shortest day approaches.December 16–20: Ice begins to form at the edges.December 21–25: Solstice — the sun begins 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 afternoon

Annual cicada buzz begins, peaking in the heat of the day.

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——
April——
Maylettuce, peas, spinach, radisheslettuce, peas, radishes
Junelettuce, peas, spinach, radishes, tomatoes, peppers, beans, squashlettuce, peas, radishes
Julytomatoes, peppers, beans, squashtomatoes, beans, summer squash
Augusttomatoes, peppers, beans, squash, fall brassicas, garlic (overwinter), carrotstomatoes, beans, summer squash
Septemberfall brassicas, garlic (overwinter), carrotstomatoes, beans, summer squash
October—winter squash, tomatoes (last)
November——
December——

A year in weather

In Hornell, July runs warmest near 68°F and January coldest around 21°F, while June is the wettest month (4.1 inches) and February the driest (1.9 inches).

MonthMean tempPrecipRainy days
January21°2.4″7
February23°1.9″6
March31°2.6″7
April43°3.3″8
May55°3.4″8
June63°4.1″9
July68°4.0″8
August66°3.9″7
September59°3.9″7
October48°3.6″8
November37°2.7″7
December28°2.7″7

Regional context

Hornell swings from 21°F in January to 68°F in July (47°F) per NOAA NCEI 1991-2020 normals; precipitation in Hornell runs about 38.4 inches on roughly 89 measurable days.

Hornell's rain peaks in summer: June brings 4.1 inches over 8.6 thunderstorm-fed days, while February sees just 1.9 inches across 5.8 days under cooler, drier air. It is a warm-season-wet pattern Hornell shares with places like North Hornell, NY, Arkport, NY and Canaseraga, NY.

Hornell reaches its last hard frost near late-May; that is the cue for kale, peas, spinach, and parsnips. Tomatoes and peppers do best set out two weeks later in Hornell, once nights clear the mid-40s°F. By early-October, frost is back in Hornell — protect or harvest anything tender. A creek-bottom lot in Hornell can lag Hornell's last frost 7-10 days behind a south slope.

Similar climates: North Hornell, NY, Arkport, NY, Canaseraga, NY, Dansville, NY, Cumminsville, NY.

Frequently asked

When does it freeze in Hornell?
Frost typically leaves Hornell by mid-May and returns to Hornell near mid-October.
What is the rainy season in Hornell?
Rainfall in Hornell peaks in June near 4.1 inches, out of about 38 inches annually.
What is the warmest month in Hornell?
On average July tops the year in Hornell at about 68°F.
What is the coldest month in Hornell?
The coldest stretch in Hornell falls in January, around 21°F on average.
When can I start a vegetable garden in Hornell?
Hardy spring crops go in near mid-May in Hornell; tender peppers and squash wait 10–14 days.
How many rainy days does Hornell get?
Hornell averages about 89 days with measurable rain or snow each year.
What hardiness zone is Hornell?
Because Hornell bottoms near 21°F in January, that winter low sets Hornell's USDA zone — verify by ZIP.
What is the 10-day forecast for Hornell?
Hornell'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 Hornell?
See this week's day-by-day rain chances for Hornell in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Hornell?
Current conditions for Hornell and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Hornell forecast updated?
The Hornell forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Hornell?
Today's sunrise and sunset times for Hornell 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 Hornell?
The next few days in Hornell's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

In Hornell, New York, the warm-summer humid continental climate runs from about 21°F in January to 68°F in July, a 47°F seasonal range.

In a typical year Hornell records about 38 inches of precipitation on around 89 days.

Hornell's 47°F range, set by its 42.3°N position, drives frost timing and what thrives in Hornell.

All cities in New York →

Rochester, NY weather →

ZIP codes in Hornell

  • 14843

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.