Lanark, IL Current Weather Conditions

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

▼Current Conditions — Lanark, IL

SAVANNA/TRITOWN (KSFY)

NULL

71.4 F

Humidity:	71%
Wind Speed:	S 8.1 mph
Barometer:	29.85 in
Dewpoint:	61.7 F
Visibility:	10.00 mi
Precip:	--
Heat Index:	71.6 F
Wind Chill:	NA

May 17 2026, 12:15 AM CDT

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▼Hourly Observation History — Lanark, IL

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)
12:15 AM CDT	S 8.1	10.00	NULL	--	71.4	61.7	71%	NA	71.6	29.85	1010.8
11:55 PM CDT	8.1	10.00	Clear	--	70.9	61.9	73%	NA	71.1	29.85	1010.8
11:35 PM CDT	4.7	10.00	Clear	--	72.5	61.9	69%	NA	72.7	29.85	1010.8
11:15 PM CDT	S 5.8	10.00	Clear	--	73.2	62.1	68%	NA	73.4	29.86	1011.2
10:55 PM CDT	S 4.7	10.00	Partly Cloudy	--	72.9	64.4	75%	NA	73.4	29.86	1011.2
10:35 PM CDT	S 6.9	10.00	Partly Cloudy	--	73.6	64.9	74%	NA	74.1	29.86	1011.2
10:15 PM CDT	5.8	10.00	Partly Cloudy	--	74.3	64.9	73%	NA	74.8	29.86	1011.2
09:55 PM CDT	S 6.9	10.00	Partly Cloudy	--	75.7	64.9	69%	NA	76.3	29.85	1010.8
09:35 PM CDT	8.1	10.00	Clear	--	76.3	64.9	68%	NA	76.8	29.85	1010.8
09:15 PM CDT	S 6.9	10.00	Clear	--	75.6	64.6	69%	NA	76.1	29.84	1010.5
08:55 PM CDT	6.9	10.00	Partly Cloudy	--	75.9	63.3	65%	NA	76.3	29.83	1010.2
08:35 PM CDT	4.7	10.00	Mostly Cloudy	--	76.1	63.7	65%	NA	76.5	29.82	1009.8
08:15 PM CDT	0.0	10.00	Mostly Cloudy	--	77.4	62.6	60%	NA	77.7	29.83	1010.2
07:55 PM CDT	0.0	10.00	Clear	--	79.3	60.4	52%	NA	79.5	29.82	1009.8
07:35 PM CDT	0.0	7.00	Clear	--	79.3	60.3	52%	NA	79.3	29.81	1009.5
07:15 PM CDT	5.8	10.00	Clear	--	81.5	60.1	48%	NA	82.0	29.79	1008.8
06:55 PM CDT	NE 8.1	10.00	Clear	--	82.6	60.1	47%	NA	82.9	29.78	1008.5
06:35 PM CDT	0.0	10.00	Clear	--	83.3	58.5	43%	NA	83.1	29.81	1009.2
06:15 PM CDT	4.7	10.00	Clear	--	84.4	58.8	42%	NA	84.0	29.81	1009.5
05:55 PM CDT	NE 4.7	10.00	Clear	--	84.2	59.4	43%	NA	84.0	29.82	1009.8
05:35 PM CDT	3.4	10.00	Clear	--	84.4	58.8	42%	NA	84.0	29.83	1010.2
05:15 PM CDT	0.0	10.00	Partly Cloudy	--	83.7	58.3	42%	NA	83.3	29.84	1010.5
04:55 PM CDT	0.0	10.00	Partly Cloudy	--	82.0	57.7	44%	NA	81.9	29.84	1010.5
04:35 PM CDT	W 3.4	10.00	NULL	--	84.4	58.5	42%	NA	83.8	29.84	1010.5
04:15 PM CDT	0.0	10.00	Clear	--	83.7	57.7	41%	NA	83.1	29.83	1010.2
03:55 PM CDT	W 4.7	10.00	Clear	--	82.6	58.1	43%	NA	82.4	29.83	1010.2
03:35 PM CDT	0.0	10.00	Clear	--	82.6		%	NA	NA	29.84	1010.5
03:15 PM CDT	S 6.9	10.00	Clear	--	82.8	58.1	43%	NA	82.6	29.85	1010.8
02:55 PM CDT	5.8	10.00	Clear	--	82.9	59.5	45%	NA	82.9	29.86	1011.2
02:35 PM CDT	8.1	10.00	Clear	--	82.2	59.4	46%	NA	82.4	29.86	1011.2
02:15 PM CDT	SW 4.7	10.00	Clear	--	81.1	59.5	48%	NA	81.7	29.87	1011.5
01:55 PM CDT	9.2	10.00	Clear	--	80.4	59.9	50%	NA	81.1	29.88	1011.9
01:35 PM CDT	SW 10.3	10.00	Clear	--	79.5	60.1	51%	NA	79.5	29.88	1011.9
01:15 PM CDT	G 18.3	10.00	Clear	--	79.9	62.1	55%	NA	81.1	29.89	1012.2
12:55 PM CDT	12.8	10.00	Partly Cloudy	--	79.2	62.8	57%	NA	79.5	29.90	1012.5
12:35 PM CDT	11.4	10.00	Partly Cloudy	--	78.1	63.3	61%	NA	78.4	29.89	1012.2
12:15 PM CDT	SW 5.8	10.00	Partly Cloudy	--	77.2	62.6	61%	NA	77.5	29.89	1012.2
11:55 AM CDT	3.4	10.00	Clear	--	76.3	62.8	63%	NA	76.6	29.88	1011.9
11:35 AM CDT	8.1	10.00	Clear	--	76.5	63.1	63%	NA	76.8	29.88	1011.9
11:15 AM CDT	W 4.7	10.00	Partly Cloudy	--	75.2	62.6	65%	NA	75.6	29.88	1011.9
10:55 AM CDT	W 4.7	10.00	Partly Cloudy	--	74.5	62.6	67%	NA	74.8	29.88	1011.9
10:35 AM CDT	5.8	10.00	Clear	--	74.3	62.6	67%	NA	74.7	29.87	1011.5
10:15 AM CDT	W 5.8	10.00	Clear	--	73.8	62.2	67%	NA	73.9	29.86	1011.2
09:55 AM CDT	NW 4.7	10.00	Clear	--	72.0	62.2	71%	NA	72.1	29.86	1011.2
09:35 AM CDT	4.7	10.00	Clear	--	70.9	61.9	73%	NA	71.1	29.85	1010.8
09:15 AM CDT	W 4.7	10.00	Clear	--	70.5	62.2	75%	NA	70.9	29.85	1010.8
08:55 AM CDT	NW 6.9	10.00	Clear	--	69.1	62.2	79%	NA	NA	29.85	1010.8
08:35 AM CDT	W 5.8	10.00	Clear	--	67.6	60.8	79%	NA	NA	29.84	1010.5
08:15 AM CDT	0.0	10.00	Clear	--	66.7	60.1	79%	NA	NA	29.82	1009.8
07:55 AM CDT	0.0	10.00	Clear	--	64.8	60.4	86%	NA	NA	29.81	1009.5
07:35 AM CDT	0.0	10.00	Clear	--	63.5	60.1	89%	NA	NA	29.81	1009.5
07:15 AM CDT	W 5.8	10.00	Clear	--	62.8	59.9	90%	NA	NA	29.81	1009.5
06:55 AM CDT	NW 5.8	10.00	Partly Cloudy	--	62.6	59.9	91%	NA	NA	29.79	1008.8
06:35 AM CDT		10.00	Partly Cloudy	--	62.8	60.1	91%	NA	NA	29.81	1009.2
06:15 AM CDT	SW 5.8	10.00	Clear	--	62.6	59.9	91%	NA	NA	29.77	1008.1
05:55 AM CDT	5.8	10.00	Partly Cloudy	00.07	62.1	59.5	91%	NA	NA	29.77	1008.1
05:35 AM CDT	E 9.2	10.00	Drizzle	00.06	62.2	59.7	91%	NA	NA		M
05:15 AM CDT	S 13.9	10.00	Cloudy	00.03	62.6	59.5	90%	NA	NA	29.78	1008.5
04:55 AM CDT	0.0	7.00	Cloudy	00.08	63.7	59.5	86%	NA	NA	29.82	1009.8
04:35 AM CDT	4.7	7.00	Rain	00.04	63.5	59.7	87%	NA	NA	29.84	1010.5
04:15 AM CDT	4.7	10.00	Rain	00.01	63.5	60.1	89%	NA	NA	29.83	1010.2
03:55 AM CDT	9.2	10.00	Light Rain	--	62.4	59.7	91%	NA	NA	29.82	1009.8
03:35 AM CDT	4.7	10.00	Partly Cloudy	--	61.2	58.5	91%	NA	NA	29.76	1007.8
03:15 AM CDT	3.4	10.00	Mostly Cloudy	--	62.2	59.4	90%	NA	NA	29.78	1008.5
02:55 AM CDT	4.7	10.00	Cloudy	--	62.6	59.5	90%	NA	NA	29.81	1009.5
02:35 AM CDT	0.0	10.00	Partly Cloudy	--	62.8	59.4	89%	NA	NA	29.81	1009.2
02:15 AM CDT	0.0	10.00	Partly Cloudy	--	63.3	59.2	86%	NA	NA	29.81	1009.5
01:55 AM CDT	NE 3.4	10.00	Partly Cloudy	--	63.7	59.2	85%	NA	NA	29.79	1008.8
01:35 AM CDT	4.7	10.00	Mostly Cloudy	--	64.0	59.5	85%	NA	NA	29.78	1008.5
01:15 AM CDT	11.4 G 24.2	10.00	Light Rain	--	64.6	59.9	85%	NA	NA	29.82	1009.8
12:55 AM CDT	NW 4.7	10.00	Rain	00.02	68.4	61.2	78%	NA	NA	29.79	1008.8
12:35 AM CDT	W 3.4	10.00	Thunderstorms and Rain	00.01	69.4	60.8	74%	NA	NA	29.77	1008.1