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Day 1 Outlook • April 20, 2026
Day 2 Outlook • April 21, 2026
Day 3 Outlook • April 22, 2026
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dBZ 5
75

Hazardous Weather Conditions

  • No active alerts for LUCAS, SOUTH DAKOTA

Current Conditions: LUCAS, SOUTH DAKOTA

CHAMBERLAIN (K9V9)

Clear

38.3 F
Humidity:41%
Wind Speed:E 5.8 mph
Barometer:30.21 in
Dewpoint:16.7 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:33.8 F
Apr 19 2026, 09:55 PM CDT
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5 Day Forecast for LUCAS, SOUTH DAKOTA (57523)

Sunday

High 55 °F
Mostly Sunny
Sunday
Night
Low 33 °F
Mostly Clear
Monday

High 78 °F
Partly Sunny
Monday
Night
Low 46 °F
Partly Sunny
Tuesday

High 82 °F
Mostly Sunny
Tuesday
Night
Low 57 °F
Partly Cloudy
Wednesday

High 86 °F
Partly Sunny
Wednesday
Night
Low 55 °F
Rain Likely
Thursday

High 68 °F
Slight Chance of Showers

Detailed Forecast for LUCAS, SOUTH DAKOTA (57523)

Sunday
Mostly Sunny. High near 55°F. Wind 8 to 9 mph, with gusts as high as 15 mph.
Sunday Night
Mostly Clear. Low around 33°F. Wind 10 to 14 mph, with gusts as high as 23 mph.
Monday
Partly Sunny. High near 78°F. Wind 14 to 22 mph, with gusts as high as 33 mph.
Monday Night
Partly Sunny. Low around 46°F. Wind 7 to 12 mph, with gusts as high as 18 mph.
Tuesday
Mostly Sunny. High near 82°F. Wind 7 to 14 mph, with gusts as high as 21 mph.
Tuesday Night
Partly Cloudy. Low around 57°F. Wind 15 to 17 mph, with gusts as high as 28 mph.
Wednesday
Partly Sunny. High near 86°F. Wind 23 to 33 mph, with gusts as high as 46 mph.
Wednesday Night
Rain Likely. Low around 55°F. Wind around 30 mph, with gusts as high as 41 mph.
Thursday
Slight Chance of Showers. High near 68°F. Wind 33 to 36 mph, with gusts as high as 49 mph.
Thursday Night
Mostly Cloudy. Low around 35°F. Wind around 32 mph, with gusts as high as 44 mph.
Friday
Partly Sunny. High near 55°F. Wind 18 to 26 mph, with gusts as high as 36 mph.
Friday Night
Partly Cloudy. Low around 32°F. Wind around 14 mph, with gusts as high as 23 mph.
Saturday
Slight Chance of Rain Showers. High near 53°F. Wind 14 to 18 mph, with gusts as high as 28 mph.
Saturday Night
Slight Chance of Rain/Snow Mix. Low around 32°F. Wind around 10 mph, with gusts as high as 15 mph.
SD Radar
Current Radar • SD
Day 1 Outlook • April 20, 2026

Observation History for LUCAS, SOUTH DAKOTA

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)
09:55 PM CDT E 5.8 10.00 Clear -- 38.3 16.7 41% 33.8 NA 30.21 1023.0
09:35 PM CDT E 6.9 10.00 Clear -- 39.6 17.6 41% 34.7 NA 30.20 1022.7
09:15 PM CDT E 9.2 10.00 Clear -- 41.0 19.0 41% 35.2 NA 30.21 1023.0
08:55 PM CDT E 6.9 10.00 Clear -- 43.0 19.4 39% 38.8 NA 30.21 1023.0
08:35 PM CDT E 5.8 10.00 Clear -- 44.6 21.0 39% 41.4 NA 30.21 1023.0
08:15 PM CDT E 5.8 10.00 Clear -- 48.4 20.8 33% 45.9 NA 30.22 1023.4
07:55 PM CDT E 5.8 10.00 Clear -- 50.2 22.1 33% NA NA 30.22 1023.4
07:35 PM CDT 5.8 10.00 Clear -- 51.8 20.8 29% NA NA 30.22 1023.4
07:15 PM CDT E 5.8 10.00 Clear -- 52.9 20.3 28% NA NA 30.23 1023.7
06:55 PM CDT 0.0 10.00 Clear -- 53.6 19.9 26% NA NA 30.25 1024.1
06:35 PM CDT E 4.7 10.00 Clear -- 54.0 21.0 27% NA NA 30.25 1024.1
06:15 PM CDT 5.8 10.00 Clear -- 54.0 20.5 27% NA NA 30.25 1024.1
05:55 PM CDT 0.0 10.00 Clear -- 54.0 20.3 27% NA NA 30.25 1024.1
05:35 PM CDT 0.0 10.00 Clear -- 53.6 20.5 27% NA NA 30.25 1024.1
05:15 PM CDT 4.7 10.00 NULL -- 54.3 20.3 26% NA NA 30.25 1024.1
04:55 PM CDT NE 4.7 10.00 Clear -- 54.5 21.2 27% NA NA 30.25 1024.4
04:35 PM CDT 5.8 10.00 Clear -- 53.8 20.3 27% NA NA 30.25 1024.4
04:15 PM CDT 4.7 10.00 Clear -- 54.0 21.0 27% NA NA 30.25 1024.4
03:55 PM CDT NE 4.7 10.00 Clear -- 53.1 20.1 27% NA NA 30.25 1024.4
03:35 PM CDT 4.7 10.00 Clear -- 53.2 21.4 29% NA NA 30.26 1024.7
03:15 PM CDT NE 4.7 10.00 Clear -- 52.0 19.6 28% NA NA 30.26 1024.7
02:55 PM CDT 4.7 10.00 Clear -- 52.2 20.7 29% NA NA 30.27 1025.1
02:35 PM CDT 8.1 10.00 Clear -- 51.4 21.2 30% NA NA 30.27 1025.1
02:15 PM CDT E 4.7 10.00 Clear -- 50.2 21.2 32% NA NA 30.28 1025.4

Regional Weather Observation

WINNER (KICR)

Clear
39.2 F

CHAMBERLAIN (K9V9)

Clear
38.3 F

MITCHELL (KMHE)

Clear
37.4 F

AINSWORTH MUNICI (KANW)

Clear
46.4 F

VALENTINE (KVTN)

Clear
51.8 F

O NEILL (KONL)

Clear
43.0 F
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