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

Weather in Harleyville, South Carolina

Roses open on the Piedmont edge. Day 59 of spring. Read this microseason across nine climate regions →

Harleyville, SC
Sunday, May 17 at 5:52 AM
66
°
Overcast
Feels like
69°
Humidity
84%
Wind
4 mph
Sunrise
6:20 AM
Sunset
8:16 PM
Harleyville, SC
Hour by hour · 24h
61°
1a
59°
2a
57°
3a
54°
4a
52°
5a
51°
6a
50°
7a
56°
8a
61°
9a
64°
10a
67°
11a
70°
12p
73°
1p
75°
2p
78°
3p
79°
4p
80°
5p
80°
6p
79°
7p
75°
8p
69°
9p
66°
10p
61°
11p
62°
12a
L 50°H 80°
Harleyville, SC
7-day forecast
  1. Today
    May 17
    Foggy
    92°65°
  2. Monday
    May 18
    Clear
    92°65°
  3. Tuesday
    May 19
    Clear
    90°64°
  4. Wednesday
    May 20
    Overcast
    12%
    93°65°
  5. Thursday
    May 21
    Overcast
    41%
    93°68°
  6. Friday
    May 22
    Overcast
    68%
    92°67°
  7. Saturday
    May 23
    Light Drizzle
    68%
    90°68°
Harleyville, SC
Anemometer · 24h winds · from true
NESW
From · True
ESE
115° · backing 28°
Direction
ESE
115°
Sustained
4
mph
Gust
11
mph
Peak 24h
14
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 14 @ 8:00p
−24h−18h−12h−6hnow
Light breeze backing 28° from the ese.
Harleyville, SC
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1016.1
-0.3 mb in 3h · steady · 30.01 inHg
Now
1016.1
mb
3h
-0.3
mb
12h
-0.1
mb
24h
-1.5
mb
Regime · FAIR
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 10151020
−24h−18h−12h−6hnow
Fair, steady air — a quiet anticyclone holds the sky.
Harleyville, SC
Air quality
49
AQI
Good
PM 2.5
10.2 μg/m³
PM 10
13.1 μg/m³
NO₂
3.6 μg/m³
Ozone
82.0 μg/m³
UV Index
0.0 Low
Harleyville, SC
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
9:54 AM
Sunrise
6:20 AM
Daylight
13h 56m
Sunset
8:16 PM
Civil dusk
12:44 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Harleyville, SC
The moon
New Moon
0% illuminated
Moonrise
10:33 AM
Moonset
12:37 AM
In sign
♊︎ Gemini
Harleyville, SC
Microseason · 28 of 72
May 16–20

Roses open on the Piedmont edge

insect
Jan 137% of the yearDec 31

Read this microseason across nine climate regions →

Harleyville at a glance

  • Today vs. normal: 12°F below the seasonal normal for this latitude
  • Last frost: March 6 (climatological average for this latitude)
  • Microseason: 28 of 72, May 16–20
  • Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.

Right now in the garden

Peak growing season

As of May 17, 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 Harleyville

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.