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

Weather in Seneca, South Dakota

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

Seneca, SD
Sunday, May 17 at 4:03 AM
56
°
Clear
Feels like
45°
Humidity
38%
Wind
17 mph
Sunrise
6:07 AM
Sunset
9:01 PM
Seneca, SD
Hour by hour · 24h
59°
11p
57°
12a
54°
1a
51°
2a
52°
3a
52°
4a
49°
5a
47°
6a
48°
7a
55°
8a
62°
9a
66°
10a
71°
11a
74°
12p
76°
1p
78°
2p
78°
3p
78°
4p
78°
5p
78°
6p
77°
7p
74°
8p
67°
9p
62°
10p
L 47°H 78°
Seneca, SD
7-day forecast
  1. Today
    May 16
    Clear
    75°43°
  2. Sunday
    May 17
    Rain
    54%
    68°46°
  3. Monday
    May 18
    Rain
    87%
    50°38°
  4. Tuesday
    May 19
    Light Drizzle
    87%
    53°38°
  5. Wednesday
    May 20
    Light Drizzle
    13%
    69°35°
  6. Thursday
    May 21
    Light Drizzle
    15%
    64°49°
  7. Friday
    May 22
    Overcast
    24%
    74°46°
Seneca, SD
Anemometer · 24h winds · from true
NESW
From · True
ENE
074° · veering 164°
Direction
ENE
074°
Sustained
17
mph
Gust
32
mph
Peak 24h
36
avg 11
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 11 · pk 36 @ 3:00a
−24h−18h−12h−6hnow
Sustained 17 mph with gusts pulsing to 32 — flags snap, branches bend.
Seneca, SD
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
941.2
+1.2 mb in 3h · falling rapidly · 27.79 inHg
Now
941.2
mb
3h
+1.2
mb
12h
-4.5
mb
24h
+0.2
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 938947
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Seneca, SD
Air quality
46
AQI
Good
PM 2.5
1.9 μg/m³
PM 10
2.1 μg/m³
NO₂
1.6 μg/m³
Ozone
76.0 μg/m³
UV Index
0.0 Low
Seneca, SD
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:34 AM
Sunrise
6:07 AM
Daylight
14h 54m
Sunset
9:01 PM
Civil dusk
2:36 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Seneca, SD
The moon
New Moon
0% illuminated
Moonrise
11:06 AM
Moonset
2:40 AM
In sign
♊︎ Gemini
Seneca, 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 →

Seneca at a glance

  • Today vs. normal: 11°F below the seasonal normal for this latitude
  • Last frost: May 16 (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 Seneca

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.