Weather in Keystone, South Dakota
Roses Bloom Along the Shelter Rows. Day 59 of spring. Read this microseason across nine climate regions →
Keystone, SD
Sunday, May 17 at 1:31 AM
68
°
Overcast
Feels like
61°
Humidity
27%
Wind
10 mph
Sunrise
5:26 AM
Sunset
8:13 PM
Keystone, SD
Hour by hour · 24h
72°
7p
69°
8p
62°
9p
58°
10p
55°
11p
53°
12a
53°
1a
52°
2a
49°
3a
50°
4a
50°
5a
51°
6a
56°
7a
60°
8a
65°
9a
71°
10a
71°
11a
75°
12p
75°
1p
75°
2p
75°
3p
75°
4p
74°
5p
72°
6p
Keystone, SD
7-day forecast
- TodayMay 16Drizzle40%74°46°
- SundayMay 17Light Rain63%59°47°
- MondayMay 18Light Snow Shwrs92%45°27°
- TuesdayMay 19Overcast51%56°25°
- WednesdayMay 20Overcast26%67°38°
- ThursdayMay 21Light Drizzle50%63°45°
- FridayMay 22Overcast27%70°43°
Keystone, SD
Next 24 hours · Mild now
Keystone, SD
Anemometer · 24h winds · from true
From · True
E
087° · veering 132°
Direction
E
087°
Sustained
10
mph
Gust
17
mph
Peak 24h
30
avg 8
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
−24h−18h−12h−6hnow
Keystone, SD
Air quality
51
AQI
Moderate
- PM 2.5
- 1.5 μg/m³
- PM 10
- 1.9 μg/m³
- NO₂
- 0.6 μg/m³
- Ozone
- 108.0 μg/m³
- UV Index
- 0.1 Low
Keystone, SD
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:54 AM
Sunrise
5:26 AM
Daylight
14h 47m
Sunset
8:13 PM
Civil dusk
2:48 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Keystone, SD
The moon
New Moon
0% illuminated
- Moonrise
- 11:29 AM
- Moonset
- 2:52 AM
- In sign
- ♉︎ Taurus
Keystone, SD
Microseason · 28 of 72
May 16–20
Roses Bloom Along the Shelter Rows
plant
Keystone at a glance
- Today vs. normal: 68°F — typical for the season
- Last frost: May 9 (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
Cool-season window is open
As of May 17, the cool-season window is open or about to open. Direct-sow peas, lettuce, spinach, radishes, and brassicas now. Hold off on warm-season crops until 1–2 weeks after the last spring frost (around May).