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

Weather in Rapid City, South Dakota

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

Rapid City, SD
Sunday, May 17 at 4:51 AM
60
°
Drizzle
Feels like
56°
Humidity
63%
Wind
9 mph
Sunrise
5:25 AM
Sunset
8:13 PM
Rapid City, SD
Hour by hour · 24h
60°
10p
56°
11p
54°
12a
53°
1a
52°
2a
52°
3a
49°
4a
51°
5a
53°
6a
58°
7a
63°
8a
65°
9a
69°
10a
72°
11a
75°
12p
75°
1p
78°
2p
79°
3p
79°
4p
77°
5p
76°
6p
73°
7p
69°
8p
65°
9p
L 49°H 79°
Rapid City, SD
7-day forecast
  1. Today
    May 16
    Light Rain
    40%
    79°48°
  2. Sunday
    May 17
    Rain
    49%
    60°49°
  3. Monday
    May 18
    Light Snow
    90%
    48°35°
  4. Tuesday
    May 19
    Overcast
    56%
    62°29°
  5. Wednesday
    May 20
    Overcast
    24%
    73°42°
  6. Thursday
    May 21
    Overcast
    40%
    65°48°
  7. Friday
    May 22
    Overcast
    22%
    72°47°
Rapid City, SD
Anemometer · 24h winds · from true
NESW
From · True
SE
139° · backing 170°
Direction
SE
139°
Sustained
9
mph
Gust
19
mph
Peak 24h
33
avg 9
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
avg 9 · pk 33 @ 8:00p
−24h−18h−12h−6hnow
Light breeze backing 170° from the se.
Rapid City, SD
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
889.7
+2.1 mb in 3h · falling · 26.27 inHg
Now
889.7
mb
3h
+2.1
mb
12h
-3.3
mb
24h
-3.4
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 886898
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Rapid City, SD
Air quality
50
AQI
Good
PM 2.5
3.4 μg/m³
PM 10
4.2 μg/m³
NO₂
1.6 μg/m³
Ozone
94.0 μg/m³
UV Index
0.0 Low
Rapid City, SD
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:53 AM
Sunrise
5:25 AM
Daylight
14h 48m
Sunset
8:13 PM
Civil dusk
2:47 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Rapid City, SD
The moon
New Moon
0% illuminated
Moonrise
11:27 AM
Moonset
2:51 AM
In sign
♊︎ Gemini
Rapid City, 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 →

Rapid City at a glance

  • Today vs. normal: 8°F below the seasonal normal for this latitude
  • Last frost: May 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

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 Rapid City

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.