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

Port Royal, South Carolina Weather

Fireflies pulse through the magnolias. Day 76 of spring. Read this microseason across nine climate regions →

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

Port Royal, SC
Wednesday, June 3 at 6:58 PM
83
°
Clear
Feels like
80°
Humidity
24%
Wind
12 mph
Sunrise
6:16 AM
Sunset
8:25 PM
Port Royal, SC
Hour by hour · 24h
24-Hour ForecastPort Royal, SC: 24-hour forecast. Temperatures range from 60 to 85 degrees Fahrenheit.
L 60°H 85°
Port Royal, SC
7-day forecast
  1. Today
    Jun 3
    Clear
    83°62°
  2. Thursday
    Jun 4
    Clear
    85°60°+2°
  3. Friday
    Jun 5
    Overcast
    86°62°+1°
  4. Saturday
    Jun 6
    Overcast
    86°66°
  5. Sunday
    Jun 7
    Overcast
    11%
    90°68°+4°
  6. Monday
    Jun 8
    Overcast
    43%
    93°69°+3°
  7. Tuesday
    Jun 9
    Overcast
    35%
    84°71°-9°
Port Royal, SC
Anemometer · 24h winds · from true
NESW
From · True
NNE
024° · backing 47°
Direction
NNE
024°
Sustained
12
mph
Gust
15
mph
Peak 24h
29
avg 10
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 10 · pk 29 @ 2:00a
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 1711SUSTGUST
−24h−18h−12h−6hnow
Light breeze backing 47° from the nne.
Port Royal, SC
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1021.8
+0.9 mb in 3h · rising · 30.17 inHg
Now
1021.8
mb
3h
+0.9
mb
12h
+0.7
mb
24h
+4.9
mb
Regime · FAIR
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 10181024
1010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW1024.21018.01022.9
−24h−18h−12h−6hnow
Fair and building — a clean high settles over the region.
Port Royal, SC
Air quality
43
AQI
Moderate
+5 in 6hPeak ~57 @ 11 PM

Ozone at AQI 60 now. AQI up 5 over the last 6 hours (gradual rise). With UV 8.5 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 68 by mid-afternoon.

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

PM 2.5Good
4.3μg/m³
PM 10Good
5μg/m³
NO₂Good
1μg/m³
OzoneDRIVERUnhealthy SG
113μg/m³
UV IndexVery high
8.5

What's driving it

Ozone × UV × Sky

Ozone at AQI 60 now. With UV 8.5 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 68 by mid-afternoon.

Present
AQI 60
UV peak
8.5 at 1 PM
Sky at peak
clear
Projected peak
AQI 68
Port Royal, SC
Sky cover · visibility · 24h
Cloud cover
0%
CLEAR
100%0%−24h−18h−12h−6hnow

Visibility
146.2mi
UNLIMITED
148 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
18:58 UTC ·Port Royal, SC · NOAA NESDIS / STAR · 21696x21696 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
18:58 UTC ·Port Royal, SC · NOAA NESDIS / STAR · 5-min cadence · 10000x6000 px
Port Royal, SC
Satellite · infrared · animated
Port Royal, SC
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Port Royal, SC
Almanac · Wednesday, June 3
The higher the clouds, the finer the weather.
Civil dawn
9:49 AM
Sunrise
6:16 AM
Daylight
14h 09m
Sunset
8:25 PM
Civil dusk
12:55 AM
Planting note
Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Port Royal, SC
The moon
Waning Gibbous
89% illuminated
Moonrise
2:48 AM
Moonset
12:45 PM
In sign
♑︎ Capricorn
Port Royal, SC
Microseason
Jun 1–5

Fireflies pulse through the magnolias

bird
Jan 142% of the yearDec 31

Read this microseason across nine climate regions →

Port Royal at a glance

  • Today vs. normal: 83°F — typical for the season
  • Last frost: March 1 (climatological average for this latitude)
  • Microseason: Jun 1–5
  • Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.

Right now in the garden

Peak growing season

As of June 3, 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.

ZIP codes in Port Royal

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.