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

Weather in Stephan, South Dakota

Roses Bloom Along the Shelter Rows. Day 59 of spring. Read this microseason across nine climate regions →

Stephan, SD
Sunday, May 17 at 5:15 AM
58
°
Overcast
Feels like
46°
Humidity
41%
Wind
20 mph
Sunrise
6:08 AM
Sunset
9:00 PM
Stephan, SD
Hour by hour · 24h
56°
12a
52°
1a
51°
2a
51°
3a
51°
4a
49°
5a
48°
6a
48°
7a
55°
8a
64°
9a
67°
10a
71°
11a
74°
12p
76°
1p
77°
2p
78°
3p
79°
4p
79°
5p
78°
6p
77°
7p
74°
8p
67°
9p
63°
10p
58°
11p
L 48°H 79°
Stephan, SD
7-day forecast
  1. Today
    May 17
    Rain
    48%
    70°48°
  2. Monday
    May 18
    Drizzle
    85%
    50°39°
  3. Tuesday
    May 19
    Overcast
    66%
    57°38°
  4. Wednesday
    May 20
    Light Showers
    69°37°
  5. Thursday
    May 21
    Light Drizzle
    11%
    66°48°
  6. Friday
    May 22
    Overcast
    22%
    75°47°
  7. Saturday
    May 23
    Overcast
    17%
    85°56°
Stephan, SD
Anemometer · 24h winds · from true
NESW
From · True
ENE
071° · veering 52°
Direction
ENE
071°
Sustained
20
mph
Gust
32
mph
Peak 24h
34
avg 12
Beaufort · 5 · FRESH 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 12 · pk 34 @ 5:00a
−24h−18h−12h−6hnow
Sustained 20 mph with gusts pulsing to 32 — flags snap, branches bend.
Stephan, SD
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
941.4
+2.1 mb in 3h · steady · 27.80 inHg
Now
941.4
mb
3h
+2.1
mb
12h
-4.8
mb
24h
-2.7
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 939949
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Stephan, SD
Air quality
46
AQI
Good
PM 2.5
3.8 μg/m³
PM 10
4.3 μg/m³
NO₂
1.7 μg/m³
Ozone
82.0 μg/m³
UV Index
0.0 Low
Stephan, SD
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:37 AM
Sunrise
6:08 AM
Daylight
14h 52m
Sunset
9:00 PM
Civil dusk
2:33 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Stephan, SD
The moon
New Moon
0% illuminated
Moonrise
11:10 AM
Moonset
2:36 AM
In sign
♊︎ Gemini
Stephan, SD
Microseason · 28 of 72
May 16–20

Roses Bloom Along the Shelter Rows

plant
Jan 137% of the yearDec 31

Read this microseason across nine climate regions →

Stephan at a glance

  • Today vs. normal: 9°F below the seasonal normal for this latitude
  • Last frost: May 11 (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).

ZIP codes in Stephan

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.