Weather in Sinai, South Dakota
Roses Bloom Along the Shelter Rows. Day 59 of spring. Read this microseason across nine climate regions →
Sinai, SD
Sunday, May 17 at 1:50 AM
67
°
Clear
Feels like
58°
Humidity
30%
Wind
14 mph
Sunrise
5:59 AM
Sunset
8:49 PM
Sinai, SD
Hour by hour · 24h
76°
8p
72°
9p
67°
10p
63°
11p
60°
12a
58°
1a
54°
2a
53°
3a
52°
4a
52°
5a
53°
6a
55°
7a
64°
8a
72°
9a
74°
10a
78°
11a
80°
12p
81°
1p
83°
2p
83°
3p
83°
4p
81°
5p
81°
6p
79°
7p
Sinai, SD
7-day forecast
- TodayMay 16Partly Cloudy—77°48°
- SundayMay 17Light Rain53%68°54°
- MondayMay 18Heavy Drizzle66%54°43°
- TuesdayMay 19Drizzle66%49°39°
- WednesdayMay 20Clear—64°35°
- ThursdayMay 21Overcast14%65°45°
- FridayMay 22Light Drizzle20%64°52°
Sinai, SD
Next 24 hours · Mild now
Sinai, SD
Anemometer · 24h winds · from true
From · True
ENE
062° · veering 122°
Direction
ENE
062°
Sustained
14
mph
Gust
26
mph
Peak 24h
33
avg 9
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
−24h−18h−12h−6hnow
Sinai, SD
Air quality
50
AQI
Good
- PM 2.5
- 5.6 μg/m³
- PM 10
- 6.6 μg/m³
- NO₂
- 1.1 μg/m³
- Ozone
- 101.0 μg/m³
- UV Index
- 0.1 Low
Sinai, SD
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:27 AM
Sunrise
5:59 AM
Daylight
14h 50m
Sunset
8:49 PM
Civil dusk
2:23 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Sinai, SD
The moon
New Moon
0% illuminated
- Moonrise
- 11:00 AM
- Moonset
- 2:25 AM
- In sign
- ♉︎ Taurus
Sinai, SD
Microseason · 28 of 72
May 16–20
Roses Bloom Along the Shelter Rows
plant
Sinai at a glance
- Today vs. normal: 67°F — typical for the season
- Last frost: May 11 (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).