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

Harrisburg, South Dakota Weather

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

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

Harrisburg, SD
Saturday, July 4 at 12:43 PM
83
°
Clear
Feels like
92°
Humidity
60%
Wind
4 mph
Sunrise
12:51 AM
Sunset
4:10 PM
Harrisburg, SD
Hour by hour · 24h
24-Hour ForecastHarrisburg, SD: 24-hour forecast. Temperatures range from 66 to 88 degrees Fahrenheit.
L 66°H 88°
Harrisburg, SD
7-day forecast
  1. Today
    Jul 4
    Overcast
    —
    —
    88°66°—
  2. Sunday
    Jul 5
    Mostly Clear
    —
    —
    88°66°0°
  3. Monday
    Jul 6
    Overcast
    —
    —
    89°65°+1°
  4. Tuesday
    Jul 7
    Light Drizzle
    21%
    —
    91°68°+2°
  5. Wednesday
    Jul 8
    Light Showers
    39%
    —
    87°67°-4°
  6. Thursday
    Jul 9
    Overcast
    34%
    —
    83°63°-4°
  7. Friday
    Jul 10
    Light Drizzle
    11%
    —
    88°65°+5°
Harrisburg, SD
Next 24 hours · Warm now
HOT 90°60°78°95°12p6p12a6anow 82°high 88°low 66°
Harrisburg, SD
Anemometer · 24h winds · from true
NESW
From · True
SW
218° · veering 40°
Direction
SW
218°
Sustained
4
mph
Gust
4
mph
Peak 24h
12
avg 4
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 4 · pk 12 @ 11:00p
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 181SUSTGUST
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Harrisburg, SD
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
966.2
+0.9 mb in 3h · rising · 28.53 inHg
Now
966.2
mb
3h
+0.9
mb
12h
+1.6
mb
24h
+1.1
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 963–966
955960965970975-21h-18h-15h-12h-9h-6h-3h-24hNOW966.1962.9966.1
−24h−18h−12h−6hnow
The low is filling — pressure climbing out of storm territory.
Harrisburg, SD
Air quality
45
AQI
Good
→+1 in 6h

AQI 45 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 10.5 µg/m³ (AQI 54) with a 0.77 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.

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

PM 2.5DRIVERGood
10.5μg/m³
PM 10Good
14μg/m³
NO₂Good
2μg/m³
OzoneModerate
96μg/m³
UV IndexHigh
5.5

What's driving it

Ozone × UV × Sky

Ozone at AQI 45 now. With UV 5.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 34 around 1 PM.

Present
AQI 45
UV peak
5.7 at 1 PM
Sky at peak
clear
Projected peak
AQI 34

PM × Wind × Precip

PM2.5 at 10.5 µg/m³ (AQI 54) with a 0.77 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.

PM2.5/PM10
0.77
Wind
calm
Recent rain
0h in last 6h
Pattern
stagnant smoke

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/m³470
Harrisburg, SD
Sky cover · visibility · 24h
Cloud cover
7%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
61.0mi
UNLIMITED
71 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
17:43 UTC · Harrisburg, SD · 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
17:43 UTC · Harrisburg, SD · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Harrisburg, SD
Satellite · infrared · animated
Harrisburg, SD
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Harrisburg, SD
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
12:51 AM
Daylight
15h 19m
Sunset
4:10 PM
Civil dusk
9:47 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Harrisburg, SD
The moon
Waning Gibbous
80% illuminated
Moonrise
11:27 PM
Moonset
10:29 AM
In sign
♓︎ Pisces
Harrisburg, SD
Microseason
Jul 1–5

Cicadas claim the afternoon

bird
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Harrisburg at a glance

  • Today vs. normal: 15°F above the seasonal normal for this latitude
  • Last frost: May 7 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP code: 57032

16-Day Forecast — Harrisburg

  1. Sat88°66°5%
  2. Sun88°66°6%
  3. Mon89°65°3%
  4. Tue91°68°21%
  5. Wed87°67°39%
  6. Thu83°63°34%
  7. Fri88°65°11%
  8. Sat86°61°11%
  9. Sun81°54°8%
  10. Mon89°55°6%
  11. Tue95°67°5%
  12. Wed87°65°11%
  13. Thu92°64°13%
  14. Fri95°68°17%
  15. Sat96°67°16%
  16. Sun102°71°19%

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 — Harrisburg

SPC has placed Harrisburg in the Marginal Risk category for severe thunderstorms today.

  • TODAYMRGLMarginal Risk
  • TOMORROWNONENo severe risk
  • DAY 3TSTMGeneral Thunderstorms

Isolated severe storms possible. Limited threat for hail or damaging wind.

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: Winter settles deep on the plains.January 6–10: Arctic cold grips the heartland.January 11–15: Sunlight returns to the sloped terrain.January 16–20: Ring-necked pheasants call from cover.January 21–25: Deepest cold locks the prairie.January 26–31: Deep winter's pivot point.February 1–5: February's first breath.February 6–10: Subtle shifts in the light.February 11–15: Bald eagles concentrate on open water.February 16–20: Cold rebound before the final thaw.February 21–25: First killdeer return to thawed fields.February 26–28: Winter's veil grows thin.March 1–5: Ice withdraws from the land.March 6–10: Hibernators wake to open air.March 11–15: Spring arrives with fury and grace.March 16–20: Sandhill Cranes Rise from the Platte.March 21–25: Equinox — Night and Day Hold Balance.March 26–31: First Green Breaks Through Brown Earth.April 1–5: Thunder Voices Wake the Prairie.April 6–10: Cliff Swallows Return to Mud Nests.April 11–15: Wild Geese Wing North in Massive Flocks.April 16–20: Rainbows Follow Afternoon Storms.April 21–25: Prairie Sedges Push Through Wet Soil.April 26–30: Last Frost Retreats North.May 1–5: Wildflowers Erupt Across the Prairie.May 6–10: Grain Rains Feed the Growing Fields.May 11–15: Seedlings Rise From Frost-Free Soil.May 16–20: Roses Bloom Along the Shelter Rows.May 21–25: Summer Arrives Early in Wind and Heat.May 26–31: Frogs Begin Their Nightly Chorus.June 1–5: Prairie lightning bugs rise.June 6–10: Earthworms surface after rain.June 11–15: Toward the solstice glow.June 16–20: Lesser ripening, greater heat.June 21–25: Solstice—sun at zenith.June 26–30: Fireflies in the darkening oak.July 1–5: Cicadas claim the afternoon.July 6–10: Warm wind sweeps the tallgrass.July 11–15: Thunder builds every afternoon.July 16–20: Corn tassels and reaches peak.July 21–25: Dog days settle in haze.July 26–31: Katydid chorus erupts at dusk.August 1–5: Great rains sometimes fall.August 6–10: Autumn's edge approaches.August 11–15: Cool wind rises from the north.August 16–20: Late summer wind through tallgrass.August 21–25: Dew settles on the tallgrass.August 26–31: Monarchs gather on prairie.September 1–5: Corn tassels and heavy skies.September 6–10: Purple asters rise on the prairie.September 11–15: Hawks ride thermal currents south.September 16–20: Equinox brings balance to day.September 21–25: Thunder stills across the plains.September 26–30: Snow geese wheel through the flyway.October 1–5: Prairie enters dormancy slowly.October 6–10: Geese gather on autumn waters.October 11–15: First widespread freeze arrives.October 16–20: Oaks turn bronze and russet.October 21–25: Frost deepens through the night.October 26–31: Light rains fall on frozen ground.November 1–5: Tallgrass turns gold.November 6–10: North wind strips the oak.November 11–15: Frost locks the prairie.November 16–20: Open sky grows cold.November 21–25: First snow falls soft.November 26–30: Blizzard drives the herds.December 1–5: Deep winter takes hold.December 6–10: Sky closes cold, winter reigns.December 11–15: Darkness deepens, life retreats.December 16–20: Rivers turn to stone.December 21–25: Solstice — 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

Millions of periodical and annual cicadas emerge, their droning chorus filling the summer heat; the soundtrack of midsummer settles over prairie and wetland.

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

Harrisburg's warmest month is July (~74°F mean) and its coldest is January (~16°F). Rainfall peaks in June (4.6 inches) and bottoms out in January (0.7 inches).

MonthMean tempPrecipRainy days
January16°0.7″2
February21°0.8″3
March33°1.5″5
April46°3.0″10
May59°3.7″12
June70°4.6″15
July74°3.3″11
August72°3.3″11
September63°3.0″10
October49°2.3″8
November34°1.2″4
December22°0.8″3

Regional context

Drawing on NOAA NCEI 1991-2020 normals, Harrisburg's January averages 16°F and July 74°F — 58°F apart — while precipitation totals roughly 28.3 inches over some 94 days.

Precipitation in Harrisburg runs summer-dominant: June averages 4.6 inches across 15.0 days of warm-season storms, while January drops to 0.7 inches over 2.0 rainy days of drier cool air. That puts Harrisburg in a summer-convective cohort with places like Shindler, SD, Tea, SD and Anderson, SD.

By late-May the frosts ease in Harrisburg, opening the season for kale, peas, spinach, and parsnips. Warm-soil crops in Harrisburg wait about two weeks past Harrisburg's last frost, once the soil warms. Harrisburg's window closes around early-October as overnight lows return below freezing. In Harrisburg, low spots run 4-7°F colder than nearby slopes, nudging Harrisburg's frost dates a week.

Similar climates: Shindler, SD, Tea, SD, Anderson, SD, Sioux Falls, SD, Worthing, SD.

Frequently asked

When does it freeze in Harrisburg?
Frost typically leaves Harrisburg by mid-May and returns to Harrisburg near mid-October.
What is the rainy season in Harrisburg?
Harrisburg sees its heaviest rain in June (around 4.6 inches), part of roughly 28 inches a year.
What is the warmest month in Harrisburg?
July is Harrisburg's warmest month, averaging about 74°F.
What is the coldest month in Harrisburg?
Harrisburg bottoms out in January, with a mean near 16°F.
When can I start a vegetable garden in Harrisburg?
Frost-hardy sowings begin at mid-May in Harrisburg; warm-season starts follow two weeks on.
How many rainy days does Harrisburg get?
Harrisburg records around 94 days of measurable precipitation annually.
What hardiness zone is Harrisburg?
Harrisburg sits in the USDA zone set by January lows near 16°F; the USDA ZIP tool gives the band.
What is the 10-day forecast for Harrisburg?
Harrisburg'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 Harrisburg?
See this week's day-by-day rain chances for Harrisburg in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Harrisburg?
Current conditions for Harrisburg and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Harrisburg forecast updated?
The Harrisburg forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Harrisburg?
Today's sunrise and sunset times for Harrisburg 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 Harrisburg?
The next few days in Harrisburg's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Harrisburg, South Dakota occupies a warm-summer humid continental zone, with January means near 16°F and July around 74°F — a 58°F swing.

Yearly precipitation in Harrisburg totals around 28 inches, spread over about 94 days of rain or snow.

The 58°F gap between Harrisburg's summer and winter, at 43.4°N, shapes Harrisburg's frost calendar.

All cities in South Dakota →

Sioux Falls, SD weather →

ZIP codes in Harrisburg

  • 57108
  • 57032

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.