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Weather in Belle Fourche, South Dakota

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

Belle Fourche, SD
Sunday, May 17 at 1:31 AM
70
°
Partly Cloudy
Feels like
58°
Humidity
28%
Wind
22 mph
Sunrise
5:25 AM
Sunset
8:17 PM
Belle Fourche, SD
Hour by hour · 24h
75°
7p
70°
8p
63°
9p
58°
10p
54°
11p
50°
12a
49°
1a
47°
2a
46°
3a
45°
4a
45°
5a
46°
6a
53°
7a
59°
8a
62°
9a
67°
10a
69°
11a
72°
12p
73°
1p
74°
2p
75°
3p
75°
4p
75°
5p
75°
6p
L 45°H 75°
Belle Fourche, SD
7-day forecast
  1. Today
    May 16
    Overcast
    19%
    75°40°
  2. Sunday
    May 17
    Light Rain
    38%
    63°45°
  3. Monday
    May 18
    Light Rain
    89%
    52°37°
  4. Tuesday
    May 19
    Overcast
    67%
    64°31°
  5. Wednesday
    May 20
    Overcast
    18%
    75°40°
  6. Thursday
    May 21
    Light Drizzle
    29%
    65°46°
  7. Friday
    May 22
    Overcast
    20%
    74°45°
Belle Fourche, SD
Anemometer · 24h winds · from true
NESW
From · True
ESE
118° · backing 112°
Direction
ESE
118°
Sustained
22
mph
Gust
40
mph
Peak 24h
40
avg 15
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 15 · pk 40
−24h−18h−12h−6hnow
Sustained 22 mph with gusts pulsing to 40 — flags snap, branches bend.
Belle Fourche, SD
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
897.5
+0.3 mb in 3h · falling rapidly · 26.50 inHg
Now
897.5
mb
3h
+0.3
mb
12h
-6.6
mb
24h
-4.3
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 894906
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Belle Fourche, SD
Air quality
49
AQI
Good
PM 2.5
2.9 μg/m³
PM 10
3.5 μg/m³
NO₂
0.6 μg/m³
Ozone
105.0 μg/m³
UV Index
0.1 Low
Belle Fourche, 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 52m
Sunset
8:17 PM
Civil dusk
2:52 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Belle Fourche, SD
The moon
New Moon
0% illuminated
Moonrise
11:27 AM
Moonset
2:57 AM
In sign
♉︎ Taurus
Belle Fourche, 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 →

Belle Fourche at a glance

  • Today vs. normal: 3°F above the seasonal normal for this latitude
  • Last frost: May 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

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 Belle Fourche

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.