Yankton, SD Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Yankton, SD.

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Current Conditions — Yankton, SD

YANKTON (KYKN)

Cloudy

48.2 F
Humidity:53%
Wind Speed: 0.0 mph
Barometer: in
Dewpoint:32.0 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 28 2026, 01:35 PM CDT
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5-Day Forecast — Yankton, SD

Tuesday

High 57 °F
Chance of Rain Showers
Tuesday
Night
Low 35 °F
Chance of Rain Showers
Wednesday

High 62 °F
Slight Chance of Showers
Wednesday
Night
Low 37 °F
Slight Chance of Rain
Thursday

High 57 °F
Slight Chance of Showers
Thursday
Night
Low 32 °F
Mostly Clear
Friday

High 60 °F
Partly Sunny
Friday
Night
Low 35 °F
Mostly Clear
Saturday

High 69 °F
Mostly Sunny

Detailed Forecast — Yankton, SD

Tuesday
Chance of Rain Showers. High near 57°F. Wind 6 to 7 mph, with gusts as high as 13 mph.
Tuesday Night
Chance of Rain Showers. Low around 35°F. Wind 2 to 6 mph, with gusts as high as 9 mph.
Wednesday
Slight Chance of Showers. High near 62°F. Wind 3 to 9 mph, with gusts as high as 16 mph.
Wednesday Night
Slight Chance of Rain. Low around 37°F. Wind 3 to 8 mph, with gusts as high as 12 mph.
Thursday
Slight Chance of Showers. High near 57°F. Wind 7 to 10 mph, with gusts as high as 18 mph.
Thursday Night
Mostly Clear. Low around 32°F. Wind around 3 mph, with gusts as high as 7 mph.
Friday
Partly Sunny. High near 60°F. Wind 7 to 9 mph, with gusts as high as 15 mph.
Friday Night
Mostly Clear. Low around 35°F. Wind around 2 mph, with gusts as high as 5 mph.
Saturday
Mostly Sunny. High near 69°F. Wind 6 to 7 mph, with gusts as high as 13 mph.
Saturday Night
Mostly Clear. Low around 41°F. Wind around 5 mph, with gusts as high as 8 mph.
Sunday
Partly Sunny. High near 73°F. Wind 12 to 13 mph, with gusts as high as 18 mph.
Sunday Night
Slight Chance of Rain. Low around 44°F. Wind around 5 mph, with gusts as high as 7 mph.
Monday
Slight Chance of Showers. High near 73°F. Wind 13 to 16 mph, with gusts as high as 24 mph.
SD Radar
Current Radar • SD
Day 1 Outlook • April 28, 2026

Observation History — Yankton, SD

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
01:35 PM CDT 0.0 10.00 Cloudy -- 48.2 32.0 53% NA NA M
01:30 PM CDT 4.6 10.00 Cloudy -- 48.2 33.8 57% 46.4 NA M
01:25 PM CDT NW 5.7 10.00 Cloudy -- 50.0 33.8 54% NA NA M
01:20 PM CDT 3.4 10.00 Cloudy -- 48.2 33.8 57% 47.3 NA M
01:15 PM CDT 8.1 10.00 Cloudy -- 50.0 33.8 54% NA NA M
01:10 PM CDT NW 6.9 10.00 Cloudy -- 50.0 33.8 54% NA NA M
01:05 PM CDT 5.7 10.00 Cloudy -- 48.2 33.8 57% 45.7 NA M
01:00 PM CDT 5.7 10.00 Cloudy -- 48.2 33.8 57% 45.7 NA M
12:45 PM CDT 8.1 10.00 Mostly Cloudy -- 48.2 33.8 57% 44.6 NA M
12:40 PM CDT NW 6.9 10.00 Mostly Cloudy -- 48.2 33.8 57% 45.1 NA M
12:35 PM CDT 5.7 10.00 Mostly Cloudy -- 48.2 33.8 57% 45.7 NA M
12:25 PM CDT 4.6 10.00 Mostly Cloudy -- 48.2 32.0 53% 46.4 NA M
12:20 PM CDT 4.6 10.00 Mostly Cloudy -- 48.2 33.8 57% 46.4 NA M
12:15 PM CDT 5.7 10.00 Mostly Cloudy -- 48.2 33.8 57% 45.7 NA M
12:10 PM CDT 3.4 10.00 Mostly Cloudy -- 48.2 33.8 57% 47.3 NA M
12:05 PM CDT 3.4 10.00 Mostly Cloudy -- 48.2 33.8 57% 47.3 NA M
11:56 AM CDT 5.8 10.00 Mostly Cloudy -- 48.0 32.0 54% 45.5 NA M
11:50 AM CDT 4.6 10.00 Partly Cloudy -- 48.2 30.2 50% 46.4 NA M
11:40 AM CDT 6.9 10.00 Mostly Clear -- 48.2 33.8 57% 45.1 NA M
11:35 AM CDT 8.1 10.00 Mostly Clear -- 48.2 32.0 53% 44.6 NA M
11:30 AM CDT 8.1 10.00 Mostly Clear -- 48.2 32.0 53% 44.6 NA M
11:20 AM CDT 8.1 10.00 Mostly Clear -- 48.2 30.2 50% 44.6 NA M
11:05 AM CDT 9.2 10.00 Mostly Cloudy -- 48.2 33.8 57% 44.1 NA M
10:56 AM CDT 9.2 10.00 Mostly Cloudy -- 48.0 34.0 58% 43.9 NA M

Regional Weather Observation

YANKTON (KYKN)

Cloudy
48.2 F

MITCHELL (KMHE)

Cloudy
48.2 F

SIOUX FALLS (KFSD)

Mostly Clear
53.6 F

WAYNE MUNI (KLCG)

Partly Cloudy
52.2 F

O NEILL (KONL)

Cloudy
NULL F

MAURICE (KSXK)

Clear
51.8 F
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