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

Weather in Great Falls, South Carolina

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

Great Falls, SC
Sunday, May 17 at 4:10 AM
67
°
Mostly Clear
Feels like
66°
Humidity
58%
Wind
5 mph
Sunrise
6:19 AM
Sunset
8:20 PM
Great Falls, SC
Hour by hour · 24h
55°
12a
53°
1a
51°
2a
49°
3a
47°
4a
46°
5a
44°
6a
44°
7a
50°
8a
57°
9a
62°
10a
65°
11a
69°
12p
70°
1p
72°
2p
74°
3p
75°
4p
76°
5p
77°
6p
76°
7p
71°
8p
64°
9p
62°
10p
59°
11p
L 44°H 77°
Great Falls, SC
7-day forecast
  1. Today
    May 17
    Overcast
    91°62°
  2. Monday
    May 18
    Mostly Clear
    93°67°
  3. Tuesday
    May 19
    Overcast
    92°61°
  4. Wednesday
    May 20
    Overcast
    14%
    93°64°
  5. Thursday
    May 21
    Drizzle
    71%
    95°65°
  6. Friday
    May 22
    Light Drizzle
    71%
    87°66°
  7. Saturday
    May 23
    Overcast
    64%
    85°64°
Great Falls, SC
Anemometer · 24h winds · from true
NESW
From · True
ESE
121° · veering 121°
Direction
ESE
121°
Sustained
5
mph
Gust
11
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 @ 9:00a
−24h−18h−12h−6hnow
Light breeze veering 121° from the ese.
Great Falls, SC
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1002.9
-0.6 mb in 3h · steady · 29.62 inHg
Now
1002.9
mb
3h
-0.6
mb
12h
-1.0
mb
24h
-0.5
mb
Regime · RAIN
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 10031006
−24h−18h−12h−6hnow
Pressure giving way — clouds thicken and rain edges closer.
Great Falls, SC
Air quality
61
AQI
Moderate
PM 2.5
10.4 μg/m³
PM 10
12.9 μg/m³
NO₂
4.5 μg/m³
Ozone
85.0 μg/m³
UV Index
0.0 Low
Great Falls, SC
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
9:53 AM
Sunrise
6:19 AM
Daylight
14h 01m
Sunset
8:20 PM
Civil dusk
12:49 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Great Falls, SC
The moon
New Moon
0% illuminated
Moonrise
10:31 AM
Moonset
12:43 AM
In sign
♊︎ Gemini
Great Falls, 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 →

Great Falls at a glance

  • Today vs. normal: 10°F below the seasonal normal for this latitude
  • Last frost: March 14 (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 Great Falls

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.