Weather in Johnston, South Carolina
Roses open on the Piedmont edge. Day 59 of spring. Read this microseason across nine climate regions →
Johnston, SC
Sunday, May 17 at 3:45 AM
68
°
Overcast
Feels like
69°
Humidity
71%
Wind
7 mph
Sunrise
6:25 AM
Sunset
8:22 PM
Johnston, SC
Hour by hour · 24h
63°
11p
60°
12a
57°
1a
55°
2a
53°
3a
51°
4a
50°
5a
48°
6a
47°
7a
52°
8a
57°
9a
62°
10a
66°
11a
70°
12p
72°
1p
74°
2p
76°
3p
78°
4p
78°
5p
78°
6p
76°
7p
73°
8p
66°
9p
62°
10p
Johnston, SC
7-day forecast
- TodayMay 16Overcast—86°52°
- SundayMay 17Overcast—91°65°
- MondayMay 18Partly Cloudy—92°68°
- TuesdayMay 19Overcast—90°62°
- WednesdayMay 20Overcast11%92°64°
- ThursdayMay 21Light Drizzle57%91°66°
- FridayMay 22Overcast64%89°65°
Johnston, SC
Next 24 hours · Cool now
Johnston, SC
Anemometer · 24h winds · from true
From · True
SE
139° · backing 30°
Direction
SE
139°
Sustained
7
mph
Gust
16
mph
Peak 24h
17
avg 6
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
−24h−18h−12h−6hnow
Johnston, SC
Air quality
75
AQI
Moderate
- PM 2.5
- 13.6 μg/m³
- PM 10
- 15.8 μg/m³
- NO₂
- 4.3 μg/m³
- Ozone
- 99.0 μg/m³
- UV Index
- 0.0 Low
Johnston, SC
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
9:59 AM
Sunrise
6:25 AM
Daylight
13h 57m
Sunset
8:22 PM
Civil dusk
12:50 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Johnston, SC
The moon
New Moon
0% illuminated
- Moonrise
- 10:37 AM
- Moonset
- 12:44 AM
- In sign
- ♊︎ Gemini
Johnston, SC
Microseason · 28 of 72
May 16–20
Roses open on the Piedmont edge
insect
Johnston at a glance
- Today vs. normal: 10°F below the seasonal normal for this latitude
- Last frost: March 10 (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.