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

Weather in Grass Ranch Colony, South Dakota

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

Grass Ranch Colony, SD
Sunday, May 17 at 4:07 AM
66
°
Partly Cloudy
Feels like
57°
Humidity
33%
Wind
13 mph
Sunrise
6:08 AM
Sunset
8:54 PM
Grass Ranch Colony, SD
Hour by hour · 24h
60°
11p
56°
12a
54°
1a
53°
2a
53°
3a
51°
4a
50°
5a
47°
6a
48°
7a
57°
8a
64°
9a
69°
10a
75°
11a
78°
12p
81°
1p
82°
2p
83°
3p
83°
4p
82°
5p
80°
6p
80°
7p
77°
8p
71°
9p
65°
10p
L 47°H 83°
Grass Ranch Colony, SD
7-day forecast
  1. Today
    May 16
    Overcast
    81°46°
  2. Sunday
    May 17
    Heavy Rain
    43%
    73°51°
  3. Monday
    May 18
    Light Rain
    67%
    51°41°
  4. Tuesday
    May 19
    Light Drizzle
    61%
    57°38°
  5. Wednesday
    May 20
    Drizzle
    69°37°
  6. Thursday
    May 21
    Overcast
    10%
    67°47°
  7. Friday
    May 22
    Light Drizzle
    18%
    76°48°
Grass Ranch Colony, SD
Anemometer · 24h winds · from true
NESW
From · True
ENE
061° · veering 61°
Direction
ENE
061°
Sustained
13
mph
Gust
23
mph
Peak 24h
34
avg 12
Beaufort · 4 · MOD 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 @ 1:00a
−24h−18h−12h−6hnow
Sustained 13 mph with gusts pulsing to 23 — flags snap, branches bend.
Grass Ranch Colony, SD
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
946.5
-1.5 mb in 3h · falling rapidly · 27.95 inHg
Now
946.5
mb
3h
-1.5
mb
12h
-6.7
mb
24h
-3.5
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 945955
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Grass Ranch Colony, SD
Air quality
51
AQI
Moderate
PM 2.5
5.3 μg/m³
PM 10
6.3 μg/m³
NO₂
2.6 μg/m³
Ozone
87.0 μg/m³
UV Index
0.0 Low
Grass Ranch Colony, 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 46m
Sunset
8:54 PM
Civil dusk
2:29 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Grass Ranch Colony, SD
The moon
New Moon
0% illuminated
Moonrise
11:11 AM
Moonset
2:31 AM
In sign
♊︎ Gemini
Grass Ranch Colony, 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 →

Grass Ranch Colony at a glance

  • Today vs. normal: 66°F — typical for the season
  • Last frost: May 8 (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 Grass Ranch Colony

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.