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

Lemoyne, Pennsylvania Weather

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

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

Lemoyne, PA
Saturday, July 4 at 8:17 AM
84
°
Clear
Feels like
86°
Humidity
54%
Wind
7 mph
Sunrise
1:43 AM
Sunset
4:40 PM
Lemoyne, PA
Hour by hour · 24h
24-Hour ForecastLemoyne, PA: 24-hour forecast. Temperatures range from 74 to 101 degrees Fahrenheit with a 35% chance of precipitation at 9 PM.
L 74°H 101°
Lemoyne, PA
7-day forecast
  1. Today
    Jul 4
    Rain
    35%
    0.13″
    101°74°—
  2. Sunday
    Jul 5
    Heavy Rain
    93%
    2.0″
    94°73°-7°
  3. Monday
    Jul 6
    Light Rain
    93%
    0.24″
    72°64°-22°
  4. Tuesday
    Jul 7
    Drizzle
    66%
    0.03″
    72°64°0°
  5. Wednesday
    Jul 8
    Mostly Clear
    12%
    —
    84°57°+12°
  6. Thursday
    Jul 9
    Light Drizzle
    29%
    —
    90°67°+6°
  7. Friday
    Jul 10
    Light Drizzle
    34%
    —
    88°69°-2°
Lemoyne, PA
Next 24 hours · Warm now
HOT 90°65°88°110°6a12p6p12anow 82°high 101°low 74°PRECIP %
Lemoyne, PA
Anemometer · 24h winds · from true
NESW
From · True
W
262° · backing 13°
Direction
W
262°
Sustained
7
mph
Gust
14
mph
Peak 24h
34
avg 6
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 6 · pk 34 @ 2:00a
0102030MPHB1B2B3B4B5B6B7-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 282SUSTGUST
−24h−18h−12h−6hnow
Light breeze backing 13° from the w.
Lemoyne, PA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1000.2
+1.0 mb in 3h · rising · 29.54 inHg
Now
1000.2
mb
3h
+1.0
mb
12h
+1.4
mb
24h
-2.1
mb
Regime · RAIN
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 999–1002
9909951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW1002.3998.71000.2
−24h−18h−12h−6hnow
Pressure climbing out of the rain band — clearing edging in.
Lemoyne, PA
Air quality
57
AQI
Moderate
→+1 in 6h▲Peak ~64 @ 6 PM

AQI 57 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 8.7 µg/m³, PM10 at 9.3 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 6 PM.

PM 2.5DRIVERGood
8.7μg/m³
PM 10Good
9μg/m³
NO₂Good
3μg/m³
OzoneUnhealthy SG
102μg/m³
UV IndexLow
1.3

What's driving it

Ozone × UV × Sky

Ozone at AQI 48 now. With UV 4.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 28 around 1 PM.

Present
AQI 48
UV peak
4.3 at 1 PM
Sky at peak
clear
Projected peak
AQI 28

PM × Wind × Precip

PM2.5 at 8.7 µg/m³, PM10 at 9.3 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/m³440
Lemoyne, PA
Sky cover · visibility · 24h
Cloud cover
1%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
67.5mi
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
12:17 UTC · Lemoyne, 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
12:17 UTC · Lemoyne, PA · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Lemoyne, PA
Satellite · infrared · animated
Lemoyne, PA
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Lemoyne, PA
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:11 AM
Sunrise
1:43 AM
Daylight
14h 57m
Sunset
4:40 PM
Civil dusk
9:14 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Lemoyne, PA
The moon
Waning Gibbous
82% illuminated
Moonrise
11:01 PM
Moonset
10:10 AM
In sign
♓︎ Pisces
Lemoyne, PA
Microseason
Jul 1–5

Cicadas claim the afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Lemoyne at a glance

  • Today vs. normal: 13°F above the seasonal normal for this latitude
  • Last frost: April 17 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP code: 17043

16-Day Forecast — Lemoyne

  1. Sat101°74°35%
  2. Sun94°73°93%
  3. Mon72°64°93%
  4. Tue72°64°66%
  5. Wed84°57°12%
  6. Thu90°67°29%
  7. Fri88°69°34%
  8. Sat87°71°33%
  9. Sun75°65°26%
  10. Mon71°65°16%
  11. Tue80°63°13%
  12. Wed86°66°24%
  13. Thu93°69°26%
  14. Fri94°73°35%
  15. Sat83°71°39%
  16. Sun87°68°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 — Lemoyne

SPC has placed Lemoyne 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

The year in Lemoyne tops out in July (~75°F) and dips lowest in January (~29°F), with July wettest at 4.8 inches and February driest at 2.8 inches.

MonthMean tempPrecipRainy days
January29°2.9″6
February31°2.8″5
March39°3.9″6
April51°3.9″8
May61°4.0″9
June71°4.0″8
July75°4.8″7
August73°4.3″8
September65°4.6″6
October53°3.8″7
November42°2.9″6
December34°3.4″7

Regional context

By the nearest station's NOAA NCEI 1991-2020 normals, Lemoyne sees 29°F Januarys and 75°F Julys, a 46°F range, plus around 45.2 inches of precipitation across 82 days.

Lemoyne's precipitation spreads evenly: July peaks at 4.8 inches on 7.4 wet days, while February holds 2.8 inches over 5.3 — no month dominates Lemoyne's rain calendar. That lines Lemoyne up with places like Wormleysburg, PA, Camp Hill, PA and New Cumberland, PA, fed by overlapping storm tracks.

Lemoyne's growing window opens around mid-April, once Lemoyne's overnight lows stop freezing — sow kale, peas, spinach, and parsnips. Hold Lemoyne's tender crops — tomatoes, peppers, basil — until 10-14 days past Lemoyne's last frost. Lemoyne's window closes around mid-November as overnight lows return below freezing. In Lemoyne, low spots run 4-7°F colder than nearby slopes, nudging Lemoyne's frost dates a week.

Similar climates: Wormleysburg, PA, Camp Hill, PA, New Cumberland, PA, Harrisburg, PA, West Fairview, PA.

Frequently asked

When does it freeze in Lemoyne?
Lemoyne's last spring frost lands near mid-April, and in Lemoyne the first fall frost follows around mid-November.
What is the rainy season in Lemoyne?
Lemoyne sees its heaviest rain in July (around 4.8 inches), part of roughly 45 inches a year.
What is the warmest month in Lemoyne?
July is Lemoyne's warmest month, averaging about 75°F.
What is the coldest month in Lemoyne?
Lemoyne bottoms out in January, with a mean near 29°F.
When can I start a vegetable garden in Lemoyne?
Time tomatoes in Lemoyne for two weeks after mid-April; peas and greens start at Lemoyne's frost line.
How many rainy days does Lemoyne get?
Expect roughly 82 wet days a year in Lemoyne.
What hardiness zone is Lemoyne?
Lemoyne sits in the USDA zone set by January lows near 29°F; the USDA ZIP tool gives the band.
What is the 10-day forecast for Lemoyne?
Lemoyne'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 Lemoyne?
See this week's day-by-day rain chances for Lemoyne in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Lemoyne?
Current conditions for Lemoyne and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Lemoyne forecast updated?
The Lemoyne forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Lemoyne?
Today's sunrise and sunset times for Lemoyne 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 Lemoyne?
The next few days in Lemoyne's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Lemoyne, Pennsylvania occupies a warm-summer humid continental zone, with January means near 29°F and July around 75°F — a 46°F swing.

Lemoyne sees close to 45 inches of precipitation annually, falling across some 82 wet days.

The 46°F gap between Lemoyne's summer and winter, at 40.2°N, shapes Lemoyne's frost calendar.

All cities in Pennsylvania →

Harrisburg, PA weather →

ZIP codes in Lemoyne

  • 17043

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.