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

Williamsville, New York Weather

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

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

Williamsville, NY
Saturday, July 4 at 4:06 PM
74
°
Heavy Rain
Feels like
78°
Humidity
93%
Wind
13 mph
Sunrise
1:41 AM
Sunset
4:57 PM
Williamsville, NY
Hour by hour · 24h
24-Hour ForecastWilliamsville, NY: 24-hour forecast. Temperatures range from 66 to 78 degrees Fahrenheit with a 22% chance of precipitation at 4 PM.
L 66°H 78°
Williamsville, NY
7-day forecast
  1. Today
    Jul 4
    Heavy Rain
    22%
    0.48″
    80°70°—
  2. Sunday
    Jul 5
    Overcast
    10%
    —
    80°66°0°
  3. Monday
    Jul 6
    Heavy Drizzle
    52%
    0.08″
    73°64°-7°
  4. Tuesday
    Jul 7
    Heavy Showers
    36%
    0.74″
    71°63°-2°
  5. Wednesday
    Jul 8
    Overcast
    —
    —
    81°62°+10°
  6. Thursday
    Jul 9
    Light Drizzle
    34%
    0.07″
    75°65°-6°
  7. Friday
    Jul 10
    Light Drizzle
    49%
    —
    80°69°+5°
Williamsville, NY
Next 24 hours · Mild now
64°73°82°12p6p12a6anow 74°high 78°low 66°PRECIP %
Williamsville, NY
Anemometer · 24h winds · from true
NESW
From · True
NW
312° · veering 80°
Direction
NW
312°
Sustained
13
mph
Gust
16
mph
Peak 24h
30
avg 8
Beaufort · 4 · MOD 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 8 · pk 30 @ 8:00a
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 1711SUSTGUST
−24h−18h−12h−6hnow
A fresh breeze drives the nw-bound air across the harbor.
Williamsville, NY
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
990.2
-0.6 mb in 3h · falling · 29.24 inHg
Now
990.2
mb
3h
-0.6
mb
12h
+0.5
mb
24h
+0.2
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 990–991
9859909951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW990.9989.6990.2
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Williamsville, NY
Air quality
67
AQI
Moderate
↑+23 in 6h▲Peak ~90 @ 11 PM

AQI 67 (Moderate), driven by Ozone. AQI up 23 in the last 6 hours — air quality is degrading. Ozone at AQI 98 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5Good
11.9μg/m³
PM 10Good
13μg/m³
NO₂Good
1μg/m³
OzoneDRIVERUnhealthy SG
136μg/m³
UV IndexModerate
2.6

What's driving it

Ozone × UV × Sky

Ozone at AQI 98 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.

Present
AQI 98
UV peak
2.3 at earlier today
Sky at peak
partly cloudy
Projected peak
AQI 98

PM × Wind × Precip

PM scrubbed by 2 hours of recent rain — PM2.5 down to 11.9 µg/m³, PM10 to 13.1 µg/m³.

PM2.5/PM10
0.91
Wind
breezy
Recent rain
2h in last 6h
Pattern
washed out

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
Williamsville, NY
Sky cover · visibility · 24h
Cloud cover
100%
OVERCAST
100%0%−24h−18h−12h−6hnow
Visibility
1.6mi
MIST/HAZE
68 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
20:06 UTC · Williamsville, 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
20:06 UTC · Williamsville, NY · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Williamsville, NY
Satellite · infrared · animated
Williamsville, NY
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Williamsville, NY
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:07 AM
Sunrise
1:41 AM
Daylight
15h 16m
Sunset
4:57 PM
Civil dusk
9:33 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Williamsville, NY
The moon
Waning Gibbous
79% illuminated
Moonrise
11:13 PM
Moonset
10:15 AM
In sign
♓︎ Pisces
Williamsville, NY
Microseason
Jul 1–5

Cicadas claim the afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Williamsville at a glance

  • Today vs. normal: 5°F above the seasonal normal for this latitude
  • Last frost: May 4 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

16-Day Forecast — Williamsville

  1. Sat82°71°22%
  2. Sun80°66°10%
  3. Mon73°64°52%
  4. Tue71°63°36%
  5. Wed81°62°8%
  6. Thu75°65°34%
  7. Fri80°69°49%
  8. Sat75°59°22%
  9. Sun76°56°21%
  10. Mon76°56°32%
  11. Tue73°56°24%
  12. Wed77°59°35%
  13. Thu80°65°29%
  14. Fri85°68°43%
  15. Sat81°68°27%
  16. Sun77°68°39%

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 — Williamsville

SPC includes Williamsville in the general thunderstorm area today — no severe risk, but storms are possible.

  • TODAYTSTMGeneral Thunderstorms
  • TOMORROWTSTMGeneral Thunderstorms
  • DAY 3TSTMGeneral Thunderstorms

Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.

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

Williamsville's warmest month is July (~73°F mean) and its coldest is January (~24°F). Rainfall peaks in July (3.8 inches) and bottoms out in February (2.5 inches).

MonthMean tempPrecipRainy days
January24°2.6″23
February25°2.5″19
March34°3.2″20
April46°3.6″19
May56°3.5″18
June67°3.6″17
July73°3.8″17
August72°3.4″17
September65°3.5″15
October54°3.2″15
November40°3.5″20
December30°3.1″22

Regional context

Per NOAA NCEI 1991-2020 normals, Williamsville runs from a 24°F January mean to 73°F in July, a 48°F seasonal spread, with near 39.5 inches of precipitation across about 221 wet days.

No season owns Williamsville's rain: July reaches 3.8 inches across 16.8 days and February keeps 2.5 inches on 19.2, an even spread through Williamsville's year. That even rhythm groups Williamsville with places like Harris Hill, NY, Eggertsville, NY and University at Buffalo, NY.

Williamsville reaches its last hard frost near late-May; that is the cue for kale, peas, spinach, and parsnips. Heat-demanding starts go out a fortnight on in Williamsville, after the soil warms and cold snaps clear. Frost returns to Williamsville near early-October, ending the tender-crop season. A creek-bottom lot in Williamsville can lag Williamsville's last frost 7-10 days behind a south slope.

Similar climates: Harris Hill, NY, Eggertsville, NY, University at Buffalo, NY, Depew, NY, Sloan, NY.

Frequently asked

When does it freeze in Williamsville?
In Williamsville, expect the last spring frost near mid-May; Williamsville's first autumn frost comes around mid-October.
What is the rainy season in Williamsville?
Williamsville sees its heaviest rain in July (around 3.8 inches), part of roughly 40 inches a year.
What is the warmest month in Williamsville?
Williamsville peaks in July, when the mean runs near 73°F.
What is the coldest month in Williamsville?
January is Williamsville's coldest month, averaging about 24°F.
When can I start a vegetable garden in Williamsville?
Around mid-May, start frost-hardy crops in Williamsville; tomatoes and basil belong a fortnight later.
How many rainy days does Williamsville get?
Williamsville averages about 221 days with measurable rain or snow each year.
What hardiness zone is Williamsville?
Since January in Williamsville averages 24°F, Williamsville's USDA zone follows that floor — confirm it by ZIP.
What is the 10-day forecast for Williamsville?
Williamsville'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 Williamsville?
See this week's day-by-day rain chances for Williamsville in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Williamsville?
Current conditions for Williamsville and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Williamsville forecast updated?
The Williamsville forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Williamsville?
Today's sunrise and sunset times for Williamsville 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 Williamsville?
The next few days in Williamsville's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

In Williamsville, New York, the warm-summer humid continental climate runs from about 24°F in January to 73°F in July, a 49°F seasonal range.

Across the year, Williamsville collects about 40 inches of precipitation over roughly 221 days with measurable rain or snow.

From 43.0°N, Williamsville sees a 49°F seasonal swing that governs Williamsville's planting and frost windows.

All cities in New York →

Buffalo, NY weather →

ZIP codes in Williamsville

  • 14221

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.