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

Kemps Mill, Maryland Weather

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

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

Kemps Mill, MD
Saturday, July 4 at 5:55 PM
100
°
Clear
Feels like
101°
Humidity
27%
Wind
6 mph
Sunrise
1:49 AM
Sunset
4:42 PM
Kemps Mill, MD
Hour by hour · 24h
24-Hour ForecastKemps Mill, MD: 24-hour forecast. Temperatures range from 74 to 100 degrees Fahrenheit with a 45% chance of precipitation at 11 PM.
L 74°H 100°
Kemps Mill, MD
7-day forecast
  1. Today
    Jul 4
    Rain
    45%
    0.17″
    100°76°—
  2. Sunday
    Jul 5
    Light Rain
    37%
    0.09″
    94°74°-6°
  3. Monday
    Jul 6
    Heavy Drizzle
    79%
    —
    81°71°-13°
  4. Tuesday
    Jul 7
    Heavy Showers
    79%
    1.8″
    88°65°+7°
  5. Wednesday
    Jul 8
    Light Drizzle
    18%
    —
    79°64°-9°
  6. Thursday
    Jul 9
    Overcast
    11%
    —
    93°65°+14°
  7. Friday
    Jul 10
    Light Drizzle
    43%
    —
    87°67°-6°
Kemps Mill, MD
Next 24 hours · Hot now
HOT 90°65°85°105°6p12a6a12pnow 100°high 100°low 74°PRECIP %
Kemps Mill, MD
Anemometer · 24h winds · from true
NESW
From · True
SW
236° · backing 17°
Direction
SW
236°
Sustained
6
mph
Gust
14
mph
Peak 24h
21
avg 5
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 5 · pk 21 @ 2:00a
01020304050MPHB1B2B3B4B5B6B7B8B9-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 435SUSTGUST
−24h−18h−12h−6hnow
Light breeze backing 17° from the sw.
Kemps Mill, MD
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
996.5
-1.9 mb in 3h · falling · 29.43 inHg
Now
996.5
mb
3h
-1.9
mb
12h
-2.5
mb
24h
-2.4
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 997–1001
9909951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW1000.9997.2997.2
−24h−18h−12h−6hnow
Deep low still deepening — rough seas, strong wind, persistent rain.
Kemps Mill, MD
Air quality
82
AQI
Moderate
↑+29 in 6h

AQI 82 (Moderate), driven by Ozone. AQI up 29 in the last 6 hours — air quality is degrading. Ozone at AQI 76 — peak already passed at 1 PM under clear 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
8.1μg/m³
PM 10Good
9μg/m³
NO₂Good
1μg/m³
OzoneDRIVERUnhealthy SG
123μg/m³
UV IndexModerate
2.6

What's driving it

Ozone × UV × Sky

Ozone at AQI 76 — peak already passed at 1 PM under clear skies. Levels should ease through evening.

Present
AQI 76
UV peak
2.2 at earlier today
Sky at peak
clear
Projected peak
AQI 76

PM × Wind × Precip

PM2.5 at 8.1 µg/m³, PM10 at 9.0 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.90
Wind
light
Recent rain
1h 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
Kemps Mill, MD
Sky cover · visibility · 24h
Cloud cover
13%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
131.1mi
UNLIMITED
131 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
21:55 UTC · Kemps Mill, MD · 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
21:55 UTC · Kemps Mill, MD · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Kemps Mill, MD
Satellite · infrared · animated
Kemps Mill, MD
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Kemps Mill, MD
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:17 AM
Sunrise
1:49 AM
Daylight
14h 53m
Sunset
4:42 PM
Civil dusk
9:15 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Kemps Mill, MD
The moon
Waning Gibbous
78% illuminated
Moonrise
11:04 PM
Moonset
10:15 AM
In sign
♓︎ Pisces
Kemps Mill, MD
Microseason
Jul 1–5

Cicadas claim the afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Kemps Mill at a glance

  • Today vs. normal: 28°F above the seasonal normal for this latitude
  • Last frost: April 14 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

16-Day Forecast — Kemps Mill

  1. Sat100°76°45%
  2. Sun94°74°37%
  3. Mon81°71°79%
  4. Tue88°65°79%
  5. Wed79°64°18%
  6. Thu93°65°11%
  7. Fri87°67°43%
  8. Sat89°67°29%
  9. Sun80°64°20%
  10. Mon82°63°17%
  11. Tue85°59°17%
  12. Wed91°60°39%
  13. Thu92°62°33%
  14. Fri86°66°33%
  15. Sat91°68°31%
  16. Sun85°69°37%

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 — Kemps Mill

SPC has placed Kemps Mill 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

In Kemps Mill, July runs warmest near 78°F and January coldest around 33°F, while September is the wettest month (3.8 inches) and February the driest (2.0 inches).

MonthMean tempPrecipRainy days
January33°2.5″5
February36°2.0″5
March43°3.0″6
April55°3.3″7
May64°3.5″8
June73°3.4″7
July78°2.9″6
August75°2.9″6
September68°3.8″6
October57°2.8″5
November46°2.6″5
December37°2.8″5

Frequently asked

When does it freeze in Kemps Mill?
Kemps Mill's last spring frost lands near mid-April, and in Kemps Mill the first fall frost follows around mid-November.
What is the rainy season in Kemps Mill?
September is the wettest month in Kemps Mill, about 3.8 inches on average; the year totals roughly 36 inches.
What is the warmest month in Kemps Mill?
Kemps Mill peaks in July, when the mean runs near 78°F.
What is the coldest month in Kemps Mill?
January is Kemps Mill's coldest month, averaging about 33°F.
When can I start a vegetable garden in Kemps Mill?
In Kemps Mill, sow peas and hardy greens around mid-April; Kemps Mill's tomatoes and peppers wait two weeks more.
How many rainy days does Kemps Mill get?
Kemps Mill averages about 71 days with measurable rain or snow each year.
What hardiness zone is Kemps Mill?
With January around 33°F, Kemps Mill's zone reflects that minimum — the USDA ZIP map confirms Kemps Mill's band.
What is the 10-day forecast for Kemps Mill?
Kemps Mill'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 Kemps Mill?
See this week's day-by-day rain chances for Kemps Mill in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Kemps Mill?
Current conditions for Kemps Mill and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Kemps Mill forecast updated?
The Kemps Mill forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Kemps Mill?
Today's sunrise and sunset times for Kemps Mill 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 Kemps Mill?
The next few days in Kemps Mill's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Set in a warm-summer humid continental zone, Kemps Mill, Maryland swings from 33°F in the heart of winter to 78°F at midsummer — a 45°F arc.

Rain and snow bring Kemps Mill roughly 36 inches a year across approximately 71 measurable-precipitation days.

Kemps Mill's 45°F range, set by its 39.6°N position, drives frost timing and what thrives in Kemps Mill.

All cities in Maryland →

Hagerstown, MD weather →

ZIP codes in Kemps Mill

  • 21740

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.