Weather in Jefferson, South Dakota
Roses Bloom Along the Shelter Rows. Day 59 of spring. Read this microseason across nine climate regions →
Jefferson, SD
Sunday, May 17 at 2:51 AM
72
°
Overcast
Feels like
65°
Humidity
30%
Wind
12 mph
Sunrise
6:02 AM
Sunset
8:42 PM
Jefferson, SD
Hour by hour · 24h
74°
9p
71°
10p
67°
11p
66°
12a
64°
1a
62°
2a
61°
3a
58°
4a
56°
5a
54°
6a
54°
7a
61°
8a
68°
9a
72°
10a
78°
11a
83°
12p
86°
1p
89°
2p
91°
3p
90°
4p
92°
5p
93°
6p
97°
7p
91°
8p
Jefferson, SD
7-day forecast
- TodayMay 16Overcast—84°51°
- SundayMay 17Thunderstorm48%83°62°
- MondayMay 18Rain82%62°52°
- TuesdayMay 19Overcast82%59°43°
- WednesdayMay 20Overcast—65°40°
- ThursdayMay 21Light Drizzle—68°47°
- FridayMay 22Light Rain17%63°55°
Jefferson, SD
Next 24 hours · Mild now
Jefferson, SD
Anemometer · 24h winds · from true
From · True
E
084° · veering 174°
Direction
E
084°
Sustained
12
mph
Gust
21
mph
Peak 24h
28
avg 11
Beaufort · 3 · GENTLE 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
Jefferson, SD
Air quality
54
AQI
Moderate
- PM 2.5
- 3.6 μg/m³
- PM 10
- 4.3 μg/m³
- NO₂
- 2.2 μg/m³
- Ozone
- 101.0 μg/m³
- UV Index
- 0.0 Low
Jefferson, SD
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:32 AM
Sunrise
6:02 AM
Daylight
14h 40m
Sunset
8:42 PM
Civil dusk
2:15 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Jefferson, SD
The moon
New Moon
0% illuminated
- Moonrise
- 11:05 AM
- Moonset
- 2:16 AM
- In sign
- ♊︎ Gemini
Jefferson, SD
Microseason · 28 of 72
May 16–20
Roses Bloom Along the Shelter Rows
plant
Jefferson at a glance
- Today vs. normal: 3°F above the seasonal normal for this latitude
- Last frost: May 2 (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).