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Aldan, Pennsylvania Weather

Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →

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

Aldan, PA
Saturday, July 4 at 10:13 PM
80
°
Heavy Drizzle
Feels like
83°
Humidity
75%
Wind
15 mph
Sunrise
1:37 AM
Sunset
4:33 PM
Aldan, PA
Hour by hour · 24h
24-Hour ForecastAldan, PA: 24-hour forecast. Temperatures range from 74 to 91 degrees Fahrenheit with a 48% chance of precipitation at 11 PM.
L 74°H 91°
Aldan, PA
7-day forecast
  1. Today
    Jul 4
    Rain
    48%
    0.30″
    99°76°—
  2. Sunday
    Jul 5
    Heavy Rain
    56%
    2.4″
    91°74°-8°
  3. Monday
    Jul 6
    Heavy Showers
    94%
    1.4″
    82°70°-9°
  4. Tuesday
    Jul 7
    Light Showers
    81%
    —
    73°67°-9°
  5. Wednesday
    Jul 8
    Overcast
    29%
    —
    78°65°+5°
  6. Thursday
    Jul 9
    Light Drizzle
    11%
    —
    92°67°+14°
  7. Friday
    Jul 10
    Light Drizzle
    42%
    0.02″
    93°74°+1°
Aldan, PA
Next 24 hours · Warm now
HOT 90°70°83°96°6p12a6a12pnow 80°high 91°low 74°PRECIP %
Aldan, PA
Anemometer · 24h winds · from true
NESW
From · True
W
268° · backing 155°
Direction
W
268°
Sustained
15
mph
Gust
30
mph
Peak 24h
30
avg 5
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 5 · pk 30 @ 10:00p
0102030MPHB1B2B3B4B5B6B7-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 3013SUSTGUST
−24h−18h−12h−6hnow
Sustained 15 mph with gusts pulsing to 30 — flags snap, branches bend.
Aldan, PA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1009.7
+4.0 mb in 3h · rising rapidly · 29.82 inHg
Now
1009.7
mb
3h
+4.0
mb
12h
-0.1
mb
24h
-0.3
mb
Regime · RAIN
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 1006–1010
1000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR-21h-18h-15h-12h-9h-6h-3h-24hNOW1010.01005.71009.7
−24h−18h−12h−6hnow
Pressure climbing out of the rain band — clearing edging in.
Aldan, PA
Air quality
100
AQI
Moderate
→-4 in 6h

AQI 100 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±4 points). PM scrubbed by 3 hours of recent rain — PM2.5 down to 9.7 µg/m³, PM10 to 9.9 µg/m³.

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

PM 2.5DRIVERGood
9.7μg/m³
PM 10Good
10μg/m³
NO₂Good
14μg/m³
OzoneUnhealthy SG
105μg/m³
UV IndexLow
0.0

What's driving it

Ozone × UV × Sky

Ozone at AQI 50. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.

Present
AQI 50
UV peak
0.0 at 1 PM
Sky at peak
overcast
Projected peak
AQI 6

PM × Wind × Precip

PM scrubbed by 3 hours of recent rain — PM2.5 down to 9.7 µg/m³, PM10 to 9.9 µg/m³.

PM2.5/PM10
0.98
Wind
breezy
Recent rain
3h 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 TREND50100SUNMONTUEWEDTHUFRISATSUN7-DAY PM2.5 TREND · μg/m³450
Aldan, PA
Sky cover · visibility · 24h
Cloud cover
100%
OVERCAST
100%0%−24h−18h−12h−6hnow
Visibility
17.5mi
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
02:13 UTC · Aldan, 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
02:13 UTC · Aldan, PA · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Aldan, PA
Satellite · infrared · animated
Aldan, PA
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Aldan, PA
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:06 AM
Sunrise
1:37 AM
Daylight
14h 56m
Sunset
4:33 PM
Civil dusk
9:06 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Aldan, PA
The moon
Waning Gibbous
77% illuminated
Moonrise
11:18 PM
Moonset
11:10 AM
In sign
♓︎ Pisces
Aldan, PA
Microseason
Jul 1–5

Cicadas claim the afternoon

fish
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Aldan at a glance

  • Today vs. normal: 8°F above the seasonal normal for this latitude
  • Last frost: April 16 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

16-Day Forecast — Aldan

  1. Sat99°76°48%
  2. Sun91°74°56%
  3. Mon82°70°94%
  4. Tue73°67°81%
  5. Wed78°65°29%
  6. Thu92°67°11%
  7. Fri93°74°42%
  8. Sat89°69°37%
  9. Sun76°69°29%
  10. Mon87°66°20%
  11. Tue89°66°17%
  12. Wed91°69°26%
  13. Thu90°72°30%
  14. Fri93°72°32%
  15. Sat89°72°29%
  16. Sun95°76°36%

Forecast data from Open-Meteo (CC BY 4.0).

Right now in the garden

Peak growing season

As of July 5, 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 — Aldan

SPC has placed Aldan 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 186 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

The year in Aldan tops out in July (~77°F) and dips lowest in January (~31°F), with December wettest at 4.2 inches and February driest at 2.9 inches.

MonthMean tempPrecipRainy days
January31°3.4″13
February33°2.9″12
March42°3.7″15
April53°3.9″17
May61°3.7″17
June71°3.7″17
July77°3.3″16
August75°4.0″17
September69°3.7″13
October58°3.0″11
November45°3.6″13
December36°4.2″13

Regional context

Per NOAA NCEI 1991-2020 normals, Aldan runs from a 31°F January mean to 77°F in July, a 46°F seasonal spread, with near 43.1 inches of precipitation across about 173 wet days.

Aldan's precipitation spreads evenly: December peaks at 4.2 inches on 13.0 wet days, while February holds 2.9 inches over 12.4 — no month dominates Aldan's rain calendar. It is a balanced pattern Aldan shares with places like Clifton Heights, PA, Collingdale, PA and Lansdowne, PA.

Once Aldan passes mid-April, overnight freezes fade and peas, lettuce, spinach, and radishes can be sown. Tomatoes and peppers do best set out two weeks later in Aldan, once nights clear the mid-40s°F. By mid-November, frost is back in Aldan — protect or harvest anything tender. Aldan's low ground holds frost later into spring than Aldan's benches, which run 3-5 days ahead.

Similar climates: Clifton Heights, PA, Collingdale, PA, Lansdowne, PA, Darby, PA, Sharon Hill, PA.

Frequently asked

When does it freeze in Aldan?
Aldan's last spring frost lands near mid-April, and in Aldan the first fall frost follows around mid-November.
What is the rainy season in Aldan?
Rainfall in Aldan peaks in December near 4.2 inches, out of about 43 inches annually.
What is the warmest month in Aldan?
Aldan peaks in July, when the mean runs near 77°F.
What is the coldest month in Aldan?
January is Aldan's coldest month, averaging about 31°F.
When can I start a vegetable garden in Aldan?
Around mid-April, start frost-hardy crops in Aldan; tomatoes and basil belong a fortnight later.
How many rainy days does Aldan get?
Aldan records around 173 days of measurable precipitation annually.
What hardiness zone is Aldan?
Because Aldan bottoms near 31°F in January, that winter low sets Aldan's USDA zone — verify by ZIP.
What is the 10-day forecast for Aldan?
Aldan'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 Aldan?
See this week's day-by-day rain chances for Aldan in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Aldan?
Current conditions for Aldan and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Aldan forecast updated?
The Aldan forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Aldan?
Today's sunrise and sunset times for Aldan 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 Aldan?
The next few days in Aldan's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

In Aldan, Pennsylvania, the warm-summer humid continental climate runs from about 31°F in January to 77°F in July, a 46°F seasonal range.

Across the year, Aldan collects about 43 inches of precipitation over roughly 173 days with measurable rain or snow.

From 39.9°N, Aldan sees a 46°F seasonal swing that governs Aldan's planting and frost windows.

All cities in Pennsylvania →

Camden, NJ weather →

ZIP codes in Aldan

  • 19018

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.