Sinai, SD Current Weather Conditions

Current weather observations and 72-hour history for Sinai, SD. • View 5-Day Forecast ›

▼Current Conditions — Sinai, SD

MADISON (KMDS)

Mostly Clear

86.0 F

Humidity:	59%
Wind Speed:	S 18.3 G 27.7 mph
Barometer:	29.84 in
Dewpoint:	69.8 F
Visibility:	10.00 mi
Precip:	--
Heat Index:	90.7 F
Wind Chill:	NA

Jun 9 2026, 11:55 AM CDT

Alert Subscriptions

Severe Weather

Tornado, flood & storm warnings

Observations

Station conditions & threshold alerts

Daily Forecast

Morning summary delivered daily

Lightning

Real-time strike alerts

▼State Weather Snapshot — South Dakota

Temperature

Dewpoint

Wind Speed

Full Interactive Observation Map →

▼Radar — South Dakota

Loading radar…

Active Alerts Lightning

Full Interactive Radar Map →

▼Hourly Observation History — Sinai, SD

Time	Wind (mph)	Vis (mi)	Weather	Precip (in)	Temperature (F)		Relative Humidity	Wind Chill (F)	Heat Index (F)	Pressure
Time	Wind (mph)	Vis (mi)	Weather	Precip (in)	Air	Dwpt	Relative Humidity	Wind Chill (F)	Heat Index (F)	altimeter (in)	sea level (mb)
11:55 AM CDT	S 18.3 G 27.7	10.00	Mostly Clear	--	86.0	69.8	59%	NA	90.7	29.84	1010.5
11:35 AM CDT		10.00	Partly Cloudy	--	86.0	71.6	62%	NA	91.9	29.84	1010.5
11:15 AM CDT	18.3 G 25.3	10.00	Clear	--	86.0	71.6	62%	NA	91.9	29.86	1011.2
10:55 AM CDT	17.2	10.00	Clear	--	86.0	73.4	66%	NA	93.4	29.85	1010.8
10:35 AM CDT	16.1	10.00	Clear	--	84.2	71.6	66%	NA	89.6	29.85	1010.8
10:15 AM CDT	S 13.9 G 19.7	10.00	Clear	--	84.2	73.4	70%	NA	90.9	29.86	1011.2
09:55 AM CDT	S 12.8	10.00	Clear	--	82.4	73.4	74%	NA	88.3	29.86	1011.2
09:35 AM CDT	11.4 G 17.2	10.00	Clear	--	80.6	75.2	84%	NA	86.2	29.86	1011.2
09:15 AM CDT		10.00	Clear	--	NULL		%	NA	NA		M
08:55 AM CDT	12.8	10.00	Clear	--	77.0		%	NA	NA	29.86	1011.2
08:35 AM CDT	10.3	10.00	Clear	--	75.2		%	NA	NA	29.88	1011.9
08:15 AM CDT		10.00	Clear	--	NULL		%	NA	NA		M
07:55 AM CDT	6.9	10.00	Clear	--	71.6	71.6	100%	NA	73.2	29.88	1011.9
07:35 AM CDT	SE 9.2	10.00	Clear	--	71.6		%	NA	NA	29.87	1011.5
07:15 AM CDT	SE 11.4	10.00	Clear	--	69.8	69.8	100%	NA	NA	29.87	1011.5
06:55 AM CDT	SE 10.3	10.00	Clear	--	69.8		%	NA	NA	29.87	1011.5
06:35 AM CDT	10.3	10.00	Clear	--	68.0	68.0	100%	NA	NA	29.87	1011.5
06:15 AM CDT		10.00	NULL	--	NULL		%	NA	NA		M
05:55 AM CDT	E 5.8	10.00	Clear	--	66.2	66.2	100%	NA	NA	29.87	1011.5
05:35 AM CDT	3.4	10.00	Clear	--	66.2	66.2	100%	NA	NA	29.88	1011.9
05:15 AM CDT	4.7	10.00	Clear	--	66.2	66.2	100%	NA	NA	29.88	1011.9
04:55 AM CDT	0.0	10.00	Clear	--	66.2	66.2	100%	NA	NA	29.88	1011.9
04:35 AM CDT	0.0	10.00	Clear	--	68.0	68.0	100%	NA	NA	29.88	1011.9
04:15 AM CDT		10.00	Clear	--	NULL		%	NA	NA		M
03:55 AM CDT	0.0	10.00	Mostly Cloudy	--	68.0	68.0	100%	NA	NA	29.89	1012.2
03:35 AM CDT	SE 4.7	10.00	Cloudy	--	68.0	68.0	100%	NA	NA	29.89	1012.2
03:15 AM CDT	E 3.4	10.00	Cloudy	--	68.0	68.0	100%	NA	NA	29.89	1012.2
02:55 AM CDT	SE 3.4	10.00	Cloudy	--	69.8	69.8	100%	NA	NA	29.90	1012.5
02:35 AM CDT	S 5.8	10.00	Mostly Cloudy	--	69.8	69.8	100%	NA	NA	29.91	1012.9
02:15 AM CDT	5.8	10.00	Mostly Clear	--	69.8	69.8	100%	NA	NA	29.91	1012.9
01:55 AM CDT	6.9	10.00	Clear	--	69.8	69.8	100%	NA	NA	29.90	1012.5
01:35 AM CDT	E 6.9	10.00	Clear	--	NULL		%	NA	NA	29.90	1012.5
01:15 AM CDT	SE 4.7	10.00	Clear	--	69.8	69.8	100%	NA	NA	29.91	1012.9
12:55 AM CDT	SW 3.4	10.00	Clear	--	71.6		%	NA	NA	29.91	1012.9
12:35 AM CDT	SW 3.4	10.00	Clear	--	71.6	71.6	100%	NA	73.2	29.91	1012.9
12:15 AM CDT	0.0	10.00	Mostly Clear	--	71.6	71.6	100%	NA	73.2	29.91	1012.9
11:55 PM CDT	0.0	10.00	Partly Cloudy	--	71.6	71.6	100%	NA	73.2	29.92	1013.2
11:35 PM CDT	SW 4.7	10.00	Partly Cloudy	--	73.4		%	NA	NA	29.91	1012.9
11:15 PM CDT		10.00	Partly Cloudy	--	NULL		%	NA	NA		M
10:55 PM CDT	3.4	10.00	Partly Cloudy	--	75.2	73.4	94%	NA	76.8	29.90	1012.5
10:35 PM CDT	6.9	10.00	Mostly Clear	--	75.2	73.4	94%	NA	76.8	29.90	1012.5
10:15 PM CDT	SW 5.8	10.00	Clear	--	77.0	73.4	89%	NA	78.6	29.89	1012.2
09:55 PM CDT	SW 6.9	10.00	Partly Cloudy	--	77.0	71.6	83%	NA	78.3	29.89	1012.2
09:35 PM CDT	S 4.7	10.00	Mostly Cloudy	--	78.8	73.4	84%	NA	82.0	29.89	1012.2
09:15 PM CDT	S 4.7	10.00	NULL	--	78.8	73.4	84%	NA	82.0	29.88	1011.9
08:55 PM CDT	SE 5.8	10.00	Partly Cloudy	--	78.8	73.4	84%	NA	82.0	29.87	1011.5
08:35 PM CDT	SE 5.8	10.00	Clear	--	80.6	73.4	79%	NA	85.3	29.87	1011.5
08:15 PM CDT	SE 5.8	10.00	Mostly Clear	--	80.6	73.4	79%	NA	85.3	29.88	1011.9
07:55 PM CDT	SE 3.4	10.00	Clear	--	80.6	73.4	79%	NA	85.3	29.88	1011.9
07:35 PM CDT	4.7	10.00	Mostly Clear	--	82.4	73.4	74%	NA	88.3	29.87	1011.5
07:15 PM CDT	4.7	10.00	NULL	--	82.4	71.6	70%	NA	87.3	29.88	1011.9
06:55 PM CDT	SE 6.9	10.00	Mostly Clear	--	84.2	71.6	66%	NA	89.6	29.87	1011.5
06:35 PM CDT	0.0	10.00	Clear	--	82.4	73.4	74%	NA	88.3	29.86	1011.2
06:15 PM CDT	0.0	10.00	Clear	--	82.4	73.4	74%	NA	88.3	29.86	1011.2
05:55 PM CDT	4.7	10.00	Clear	--	82.4	73.4	74%	NA	88.3	29.87	1011.5
05:35 PM CDT	0.0	10.00	Clear	--	80.6	73.4	79%	NA	85.3	29.87	1011.5
05:15 PM CDT	NW 4.7	10.00	Clear	--	80.6	73.4	79%	NA	85.3	29.87	1011.5
04:55 PM CDT	NW 9.2	10.00	Partly Cloudy	--	78.8	73.4	84%	NA	82.0	29.89	1012.2
04:35 PM CDT		10.00	Mostly Cloudy	--	80.6	73.4	79%	NA	85.3	29.90	1012.5
04:15 PM CDT		10.00	Cloudy	--	78.8	73.4	84%	NA	82.0	29.89	1012.2
03:55 PM CDT	3.4	10.00	Mostly Cloudy	--	82.4	73.4	74%	NA	88.3	29.89	1012.2
03:35 PM CDT	4.7	10.00	Cloudy	--	80.6	73.4	79%	NA	85.3	29.88	1011.9
03:15 PM CDT	0.0	10.00	Cloudy	--	80.6	73.4	79%	NA	85.3	29.88	1011.9
02:55 PM CDT	5.8	10.00	Mostly Cloudy	--	80.6	71.6	74%	NA	84.6	29.87	1011.5
02:35 PM CDT	S 10.3	10.00	Partly Cloudy	--	80.6	73.4	79%	NA	85.3	29.86	1011.2
02:15 PM CDT	8.1	10.00	Partly Cloudy	--	78.8	73.4	84%	NA	82.0	29.86	1011.2
01:55 PM CDT	SE 10.3	10.00	Cloudy	--	77.0	73.4	89%	NA	78.6	29.88	1011.9
01:35 PM CDT	8.1	10.00	Cloudy	--	77.0	73.4	89%	NA	78.6	29.90	1012.5
01:15 PM CDT	S 8.1	10.00	Cloudy	--	77.0	73.4	89%	NA	78.6	29.90	1012.5
12:55 PM CDT	S 9.2	10.00	Cloudy	--	77.0		%	NA	NA	29.91	1012.9
12:35 PM CDT	S 9.2	10.00	Cloudy	--	77.0		%	NA	NA	29.90	1012.5
12:15 PM CDT	S 9.2	10.00	Cloudy	--	75.2		%	NA	NA	29.90	1012.5