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

Weather in Allen, South Dakota

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

Allen, SD
Sunday, May 17 at 4:05 AM
63
°
Overcast
Feels like
51°
Humidity
37%
Wind
21 mph
Sunrise
5:22 AM
Sunset
8:06 PM
Allen, SD
Hour by hour · 24h
60°
10p
56°
11p
53°
12a
52°
1a
50°
2a
48°
3a
49°
4a
48°
5a
49°
6a
54°
7a
59°
8a
62°
9a
66°
10a
69°
11a
72°
12p
73°
1p
75°
2p
76°
3p
77°
4p
78°
5p
77°
6p
74°
7p
68°
8p
62°
9p
L 48°H 78°
Allen, SD
7-day forecast
  1. Today
    May 16
    Light Drizzle
    54%
    78°46°
  2. Sunday
    May 17
    Drizzle
    48%
    60°47°
  3. Monday
    May 18
    Light Snow
    99%
    46°35°
  4. Tuesday
    May 19
    Overcast
    74%
    58°33°
  5. Wednesday
    May 20
    Light Drizzle
    23%
    71°44°
  6. Thursday
    May 21
    Light Drizzle
    24%
    66°50°
  7. Friday
    May 22
    Overcast
    23%
    72°48°
Allen, SD
Anemometer · 24h winds · from true
NESW
From · True
SSE
154° · veering 150°
Direction
SSE
154°
Sustained
21
mph
Gust
33
mph
Peak 24h
33
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 33 @ 10:00p
−24h−18h−12h−6hnow
Sustained 21 mph with gusts pulsing to 33 — flags snap, branches bend.
Allen, SD
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
890.6
-1.2 mb in 3h · falling rapidly · 26.30 inHg
Now
890.6
mb
3h
-1.2
mb
12h
-5.0
mb
24h
-4.3
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 887898
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Allen, SD
Air quality
50
AQI
Good
PM 2.5
2.4 μg/m³
PM 10
3.2 μg/m³
NO₂
1.3 μg/m³
Ozone
98.0 μg/m³
UV Index
0.0 Low
Allen, SD
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:51 AM
Sunrise
5:22 AM
Daylight
14h 44m
Sunset
8:06 PM
Civil dusk
2:39 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Allen, SD
The moon
New Moon
0% illuminated
Moonrise
11:25 AM
Moonset
2:42 AM
In sign
♊︎ Gemini
Allen, 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 →

Allen at a glance

  • Today vs. normal: 5°F below the seasonal normal for this latitude
  • Last frost: May 6 (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 Allen

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.