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Weather in Groton, South Dakota

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

Groton, SD
Sunday, May 17 at 1:48 AM
62
°
Clear
Feels like
52°
Humidity
33%
Wind
15 mph
Sunrise
6:00 AM
Sunset
8:57 PM
Groton, SD
Hour by hour · 24h
77°
8p
72°
9p
67°
10p
64°
11p
59°
12a
55°
1a
52°
2a
50°
3a
50°
4a
48°
5a
46°
6a
48°
7a
55°
8a
64°
9a
70°
10a
73°
11a
76°
12p
78°
1p
78°
2p
79°
3p
80°
4p
80°
5p
79°
6p
79°
7p
L 46°H 80°
Groton, SD
7-day forecast
  1. Today
    May 16
    Clear
    73°44°
  2. Sunday
    May 17
    Rain
    50%
    67°49°
  3. Monday
    May 18
    Light Rain
    65%
    50°40°
  4. Tuesday
    May 19
    Light Drizzle
    65%
    49°40°
  5. Wednesday
    May 20
    Overcast
    67°36°
  6. Thursday
    May 21
    Light Drizzle
    18%
    65°51°
  7. Friday
    May 22
    Overcast
    21%
    74°50°
Groton, SD
Anemometer · 24h winds · from true
NESW
From · True
NE
049° · veering 77°
Direction
NE
049°
Sustained
15
mph
Gust
25
mph
Peak 24h
28
avg 10
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 10 · pk 28 @ 1:00a
−24h−18h−12h−6hnow
Sustained 15 mph with gusts pulsing to 25 — flags snap, branches bend.
Groton, SD
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
964.4
0.0 mb in 3h · falling rapidly · 28.48 inHg
Now
964.4
mb
3h
0.0
mb
12h
-2.1
mb
24h
+3.7
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 961967
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Groton, SD
Air quality
45
AQI
Good
PM 2.5
1.6 μg/m³
PM 10
2.0 μg/m³
NO₂
1.0 μg/m³
Ozone
85.0 μg/m³
UV Index
0.1 Low
Groton, SD
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:27 AM
Sunrise
6:00 AM
Daylight
14h 57m
Sunset
8:57 PM
Civil dusk
2:32 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Groton, SD
The moon
New Moon
0% illuminated
Moonrise
10:59 AM
Moonset
2:35 AM
In sign
♉︎ Taurus
Groton, 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 →

Groton at a glance

  • Today vs. normal: 4°F below the seasonal normal for this latitude
  • Last frost: May 19 (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 Groton

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.