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Sinking Spring, Pennsylvania Weather

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

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

Sinking Spring, PA
Saturday, July 4 at 8:56 AM
88
°
Clear
Feels like
89°
Humidity
44%
Wind
9 mph
Sunrise
1:39 AM
Sunset
4:37 PM
Sinking Spring, PA
Hour by hour · 24h
24-Hour ForecastSinking Spring, PA: 24-hour forecast. Temperatures range from 74 to 101 degrees Fahrenheit with a 50% chance of precipitation at 10 PM.
L 74°H 101°
Sinking Spring, PA
7-day forecast
  1. Today
    Jul 4
    Overcast
    50%
    —
    101°78°—
  2. Sunday
    Jul 5
    Heavy Rain
    90%
    0.81″
    95°72°-6°
  3. Monday
    Jul 6
    Thunderstorm
    90%
    0.16″
    76°63°-19°
  4. Tuesday
    Jul 7
    Light Drizzle
    72%
    —
    70°59°-6°
  5. Wednesday
    Jul 8
    Overcast
    16%
    —
    81°56°+11°
  6. Thursday
    Jul 9
    Light Drizzle
    34%
    0.01″
    87°62°+6°
  7. Friday
    Jul 10
    Light Drizzle
    36%
    —
    88°68°+1°
Sinking Spring, PA
Next 24 hours · Warm now
HOT 90°65°88°110°6a12p6p12anow 85°high 101°low 74°PRECIP %
Sinking Spring, PA
Anemometer · 24h winds · from true
NESW
From · True
WNW
288° · veering 10°
Direction
WNW
288°
Sustained
9
mph
Gust
15
mph
Peak 24h
20
avg 7
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 7 · pk 20 @ 4:00p
010203040MPHB1B2B3B4B5B6B7B8-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 366SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 10° from the wnw.
Sinking Spring, PA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1002.5
-0.2 mb in 3h · steady · 29.60 inHg
Now
1002.5
mb
3h
-0.2
mb
12h
+0.2
mb
24h
-3.4
mb
Regime · RAIN
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 1001–1005
9951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW1004.81001.11001.4
−24h−18h−12h−6hnow
Damp, unsettled regime — wet weather lingers nearby.
Sinking Spring, PA
Air quality
60
AQI
Moderate
→+2 in 6h▲Peak ~69 @ 7 PM

AQI 60 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 12.4 µg/m³, PM10 at 13.2 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 7 PM.

PM 2.5DRIVERModerate
12.4μg/m³
PM 10Good
13μg/m³
NO₂Good
4μg/m³
OzoneModerate
90μg/m³
UV IndexLow
1.4

What's driving it

Ozone × UV × Sky

Ozone at AQI 43 now. With UV 4.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 27 around 1 PM.

Present
AQI 43
UV peak
4.7 at 1 PM
Sky at peak
clear
Projected peak
AQI 27

PM × Wind × Precip

PM2.5 at 12.4 µg/m³, PM10 at 13.2 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.94
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/m³600
Sinking Spring, PA
Sky cover · visibility · 24h
Cloud cover
0%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
86.6mi
UNLIMITED
110 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
12:56 UTC · Sinking Spring, PA · 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
12:56 UTC · Sinking Spring, PA · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Sinking Spring, PA
Satellite · infrared · animated
Sinking Spring, PA
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Sinking Spring, PA
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
1:39 AM
Daylight
14h 58m
Sunset
4:37 PM
Civil dusk
9:11 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Sinking Spring, PA
The moon
Waning Gibbous
81% illuminated
Moonrise
10:58 PM
Moonset
10:07 AM
In sign
♓︎ Pisces
Sinking Spring, PA
Microseason
Jul 1–5

Cicadas claim the afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Sinking Spring at a glance

  • Today vs. normal: 17°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.

16-Day Forecast — Sinking Spring

  1. Sat101°78°50%
  2. Sun95°72°90%
  3. Mon76°63°90%
  4. Tue70°59°72%
  5. Wed81°56°16%
  6. Thu87°62°34%
  7. Fri88°68°36%
  8. Sat83°71°31%
  9. Sun72°65°29%
  10. Mon72°65°14%
  11. Tue80°65°17%
  12. Wed86°64°24%
  13. Thu90°71°32%
  14. Fri92°72°29%
  15. Sat80°71°21%
  16. Sun86°68°27%

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 — Sinking Spring

SPC has placed Sinking Spring in the Slight Risk category for severe thunderstorms today.

  • TODAYSLGTSlight Risk
  • TOMORROWSLGTSlight Risk
  • DAY 3TSTMGeneral Thunderstorms

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: 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——
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 Sinking Spring's warmest stretch (~76°F) and January its coldest (~29°F); precipitation crests in May at 4.0 inches and ebbs in February to 2.8 inches.

MonthMean tempPrecipRainy days
January29°3.2″14
February32°2.8″13
March40°3.5″16
April52°3.8″17
May61°4.0″18
June70°3.9″17
July76°3.3″17
August75°3.8″17
September68°3.6″14
October57°3.0″12
November43°3.6″14
December34°4.0″14

Regional context

In Sinking Spring, NOAA NCEI 1991-2020 normals put January near 29°F and July near 76°F — a 47°F seasonal arc — with about 42.6 inches of precipitation over 183 rainy or snowy days.

Sinking Spring's precipitation spreads evenly: May peaks at 4.0 inches on 18.4 wet days, while February holds 2.8 inches over 13.4 — no month dominates Sinking Spring's rain calendar. That lines Sinking Spring up with places like Springmont, PA, Whitfield, PA and West Wyomissing, PA, fed by overlapping storm tracks.

Once Sinking Spring passes mid-April, overnight freezes fade and kale, peas, spinach, and parsnips can be sown. Heat-demanding starts go out a fortnight on in Sinking Spring, after the soil warms and cold snaps clear. The season ends by mid-November in Sinking Spring, once hard frosts set back in. A creek-bottom lot in Sinking Spring can lag Sinking Spring's last frost 7-10 days behind a south slope.

Similar climates: Springmont, PA, Whitfield, PA, West Wyomissing, PA, West Lawn, PA, Lincoln Park, PA.

Frequently asked

When does it freeze in Sinking Spring?
In Sinking Spring, expect the last spring frost near mid-April; Sinking Spring's first autumn frost comes around mid-November.
What is the rainy season in Sinking Spring?
Sinking Spring sees its heaviest rain in May (around 4.0 inches), part of roughly 43 inches a year.
What is the warmest month in Sinking Spring?
Sinking Spring peaks in July, when the mean runs near 76°F.
What is the coldest month in Sinking Spring?
January is Sinking Spring's coldest month, averaging about 29°F.
When can I start a vegetable garden in Sinking Spring?
In Sinking Spring, sow peas and hardy greens around mid-April; Sinking Spring's tomatoes and peppers wait two weeks more.
How many rainy days does Sinking Spring get?
Sinking Spring averages about 183 days with measurable rain or snow each year.
What hardiness zone is Sinking Spring?
Because Sinking Spring bottoms near 29°F in January, that winter low sets Sinking Spring's USDA zone — verify by ZIP.
What is the 10-day forecast for Sinking Spring?
Sinking Spring'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 Sinking Spring?
See this week's day-by-day rain chances for Sinking Spring in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Sinking Spring?
Current conditions for Sinking Spring and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Sinking Spring forecast updated?
The Sinking Spring forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Sinking Spring?
Today's sunrise and sunset times for Sinking Spring 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 Sinking Spring?
The next few days in Sinking Spring's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

In Sinking Spring, Pennsylvania, the warm-summer humid continental climate runs from about 29°F in January to 76°F in July, a 47°F seasonal range.

Across the year, Sinking Spring collects about 43 inches of precipitation over roughly 183 days with measurable rain or snow.

From 40.3°N, Sinking Spring sees a 47°F seasonal swing that governs Sinking Spring's planting and frost windows.

All cities in Pennsylvania →

Reading, PA weather →

ZIP codes in Sinking Spring

  • 19608

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.