Ontario, WI Current Weather Conditions

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

▼Current Conditions — Ontario, WI

SPARTA/MCCOY AAF (KCMY)

Mostly Clear

NULL F

Humidity:	%
Wind Speed:	mph
Barometer:	in
Dewpoint:	F
Visibility:	10.00 mi
Precip:	--
Heat Index:	NA
Wind Chill:	NA

May 16 2026, 11:55 PM CDT

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▼Hourly Observation History — Ontario, WI

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 PM CDT		10.00	Mostly Clear	--	NULL		%	NA	NA		M
10:55 PM CDT		10.00	Cloudy	--	NULL		%	NA	NA		M
09:55 PM CDT	0.0	10.00	Cloudy	--	59.0	50.4	73%	NA	NA	29.84	1010.5
08:55 PM CDT	0.0	10.00	Mostly Clear	--	NULL	51.6	%	NA	NA	29.83	1010.2
07:55 PM CDT		10.00	Clear	--	NULL		%	NA	NA		M
06:55 PM CDT	0.0	10.00	Clear	--	79.2	42.3	27%	NA	78.1	29.81	1009.2
05:55 PM CDT	W 6.9	10.00	Clear	--	81.1	41.9	25%	NA	79.5	29.82	1009.8
04:55 PM CDT		10.00	Clear	--	NULL		%	NA	NA		M
03:55 PM CDT	12.8	10.00	Clear	--	83.8	40.8	22%	NA	81.3	29.82	1009.8
02:55 PM CDT	W 12.8	10.00	Clear	--	84.2	38.8	20%	NA	81.5	29.82	1009.8
02:48 PM CDT	13.9	10.00	Clear	--	84.2	39.2	20%	NA	81.5	29.82	1009.8
12:55 PM CDT	4.7	10.00	Mostly Clear	--	82.2	39.6	22%	NA	80.1	29.81	1009.2
11:55 AM CDT	5.8	10.00	Clear	--	80.4	40.3	24%	NA	79.3	29.81	1009.5
10:55 AM CDT	0.0	10.00	Clear	--	77.4	44.4	31%	NA	76.3	29.81	1009.5
09:55 AM CDT		10.00	Clear	--	NULL		%	NA	NA		M
08:55 AM CDT		7.00	Clear	--	NULL		%	NA	NA		M
07:55 AM CDT	0.0	10.00	Clear	--	63.3	60.3	90%	NA	NA	29.79	1008.8
06:55 AM CDT		3.00	Fog/Mist	--	NULL		%	NA	NA		M
06:45 AM CDT	0.0	2.25	Fog/Mist	--	53.6	51.8	94%	NA	NA	29.77	1008.1
06:40 AM CDT	0.0	2.75	Fog/Mist	--	53.6	51.8	94%	NA	NA	29.76	1007.8
06:30 AM CDT	0.0	3.00	Fog/Mist	--	53.6	51.8	94%	NA	NA	29.75	1007.5
06:00 AM CDT	0.0	3.00	Fog/Mist	--	53.6	51.8	94%	NA	NA	29.73	1006.8
05:50 AM CDT	0.0	1.63	Fog/Mist	--	51.8	51.8	100%	NA	NA	29.71	1006.1
05:35 AM CDT	0.0	2.25	Fog/Mist	--	53.6	51.8	94%	NA	NA	29.70	1005.8
05:30 AM CDT	0.0	1.87	Fog/Mist	--	53.6	53.6	100%	NA	NA	29.70	1005.8
04:55 AM CDT		3.00	Fog/Mist	--	NULL		%	NA	NA		M
03:10 AM CDT	0.0	3.00	Fog/Mist	--	60.8	57.2	88%	NA	NA	29.70	1005.8
02:55 AM CDT		3.00	Haze	--	NULL		%	NA	NA		M
12:55 AM CDT		4.00	Haze	--	NULL		%	NA	NA		M
12:02 AM CDT	S 6.9 G 18.3	10.00	Clear	--	69.8	59.0	69%	NA	NA	29.68	1004.8
10:55 PM CDT	5.8	10.00	Mostly Clear	Trace	71.8	60.3	67%	NA	71.8	29.65	1004.1
10:43 PM CDT	0.0	10.00	Partly Cloudy	--	71.6	60.8	69%	NA	71.8	29.68	1005.1
10:24 PM CDT	9.2	8.00	Thunderstorms and Rain	--	73.4	59.0	61%	NA	73.2	29.68	1005.1
10:05 PM CDT	0.0	10.00	Clear	--	69.8	60.8	73%	NA	NA	29.71	1006.1
09:56 PM CDT	0.0	10.00	Light Rain	--	69.8	59.0	69%	NA	NA	29.69	1005.4
09:07 PM CDT	0.0	8.00	Clear	--	69.8	59.0	69%	NA	NA	29.68	1005.1
08:55 PM CDT	0.0	5.00	Light Rain	Trace	70.2	58.6	67%	NA	70.0	29.66	1004.4
08:51 PM CDT	0.0	6.00	Light Rain	--	71.6	59.0	65%	NA	71.4	29.65	1004.1
08:41 PM CDT	0.0	10.00	Clear	--	73.4	57.2	57%	NA	73.0	29.65	1004.1
08:20 PM CDT	0.0	9.00	Light Rain	--	73.4	57.2	57%	NA	73.0	29.68	1004.8
07:55 PM CDT	0.0	10.00	Clear	--	79.2	55.4	44%	NA	78.8	29.68	1004.8
06:55 PM CDT	S 9.2	10.00	Clear	--	82.9	54.0	37%	NA	81.9	29.65	1004.1
05:55 PM CDT	9.2	10.00	Clear	--	84.6	51.4	32%	NA	82.8	29.68	1005.1
04:55 PM CDT	G 17.3	10.00	Clear	--	NULL		%	NA	NA		M
04:28 PM CDT	SW 12.7 G 19.6	10.00	Clear	--	84.2	53.6	35%	NA	82.8	29.68	1005.1
03:55 PM CDT		10.00	Clear	--	NULL		%	NA	NA		M
01:55 PM CDT	0.0	10.00	Clear	--	80.2	53.1	39%	NA	79.9	29.71	1006.1
12:55 PM CDT		10.00	Clear	--	NULL		%	NA	NA		M
11:55 AM CDT	S 10.3	10.00	Clear	--	75.7	52.3	44%	NA	75.0	29.73	1006.8
10:55 AM CDT	SW 5.7 G 17.3	10.00	Clear	--	72.1	51.3	48%	NA	71.2	29.75	1007.5
09:55 AM CDT	SW 11.4 G 17.2	10.00	Clear	--	69.4	50.5	51%	NA	NA	29.75	1007.5
08:55 AM CDT	9.2	10.00	Clear	--	66.2	48.6	53%	NA	NA	29.76	1007.8
07:55 AM CDT	13.8	10.00	NULL	--	62.8	46.4	55%	NA	NA	29.76	1007.8
06:55 AM CDT		10.00	Clear	--	NULL		%	NA	NA		M
05:55 AM CDT	G 17.3	10.00	Clear	--	NULL		%	NA	NA		M
04:55 AM CDT	S 4.7	10.00	Mostly Cloudy	--	59.7	45.3	59%	NA	NA	29.75	1007.5
03:55 AM CDT	S 9.2 G 16.1	10.00	Mostly Cloudy	--	59.4	46.4	62%	NA	NA	29.75	1007.5
02:55 AM CDT	S 13.9 G 18.3	10.00	Mostly Cloudy	--	58.6	46.9	65%	NA	NA	29.78	1008.5
01:55 AM CDT	9.2	10.00	Mostly Cloudy	--	54.7	50.0	84%	NA	NA	29.83	1010.2
01:26 AM CDT	0.0	10.00	Mostly Cloudy	--	55.4	50.0	82%	NA	NA	29.85	1010.8
01:07 AM CDT	0.0	7.00	Clear	--	55.4	50.0	82%	NA	NA	29.85	1010.8
12:42 AM CDT	0.0	7.00	Mostly Clear	--	53.6	51.8	94%	NA	NA	29.87	1011.5
12:32 AM CDT	0.0	6.00	Light Rain and Fog/Mist	--	53.6	51.8	94%	NA	NA	29.87	1011.5
10:55 PM CDT	0.0	6.00	Light Rain and Fog/Mist	--	56.5	52.7	87%	NA	NA	29.93	1013.5
10:45 PM CDT	0.0	8.00	Light Rain	--	55.4	53.6	94%	NA	NA	29.92	1013.2
10:29 PM CDT	0.0	10.00	Partly Cloudy	--	55.4	53.6	94%	NA	NA	29.91	1012.9
09:55 PM CDT	0.0	7.00	Light Rain	00.05	NULL	51.8	%	NA	NA	29.92	1013.2
08:55 PM CDT	3.4	10.00	Partly Cloudy	--	67.3	37.2	33%	NA	NA	29.86	1011.2
06:55 PM CDT		10.00	Clear	--	NULL		%	NA	NA		M
05:55 PM CDT		10.00	Clear	--	NULL		%	NA	NA		M
04:55 PM CDT	G 17.3	10.00	Clear	--	NULL		%	NA	NA		M
04:34 PM CDT		10.00	Clear	--	75.2	37.4	25%	NA	73.6	29.87	1011.5