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)

Clear

40.5 F

Humidity:	76%
Wind Speed:	8.1 mph
Barometer:	30.40 in
Dewpoint:	33.4 F
Visibility:	10.00 mi
Precip:	--
Heat Index:	NA
Wind Chill:	35.1 F

Oct 18 2026, 12:35 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)
12:35 AM CDT	8.1	10.00	Clear	--	40.5	33.4	76%	35.1	NA	30.40	1029.5
12:15 AM CDT	6.9	10.00	Clear	--	39.0	32.2	76%	34.0	NA	30.40	1029.5
11:55 PM CDT	8.1	10.00	Clear	--	40.6	32.0	71%	35.4	NA	30.40	1029.5
11:35 PM CDT	8.1	10.00	Clear	--	42.4	32.4	67%	37.6	NA	30.41	1029.8
11:15 PM CDT	S 8.1	10.00	Clear	--	42.8	32.5	67%	37.9	NA	30.41	1029.8
10:55 PM CDT	S 6.9	10.00	Clear	--	41.9	32.0	68%	37.4	NA	30.41	1029.8
10:35 PM CDT	S 8.1	10.00	Clear	--	42.3	32.2	67%	37.4	NA	30.41	1029.8
10:15 PM CDT	S 6.9	10.00	Clear	--	41.5	32.0	69%	37.0	NA	30.41	1029.8
09:55 PM CDT	S 6.9	10.00	Clear	--	41.2	32.0	70%	36.7	NA	30.41	1029.8
09:35 PM CDT	6.9	10.00	Clear	--	40.5	32.0	72%	35.8	NA	30.41	1029.8
09:15 PM CDT	6.9	10.00	Clear	--	39.9	32.0	73%	35.1	NA	30.41	1029.8
08:55 PM CDT	3.4	10.00	Clear	--	41.2	32.9	72%	39.4	NA	30.41	1029.8
08:35 PM CDT	0.0	10.00	Clear	--	41.9	32.0	68%	NA	NA	30.41	1029.8
08:15 PM CDT		10.00	Clear	--	NULL		%	NA	NA		M
07:55 PM CDT	S 3.4	10.00	Clear	--	45.5	32.5	60%	44.2	NA	30.41	1029.8
07:35 PM CDT	S 4.7	10.00	Clear	--	42.4	32.5	68%	39.6	NA	30.41	1029.8
07:15 PM CDT	3.4	10.00	Clear	--	46.6	31.8	56%	45.5	NA	30.41	1029.8
06:55 PM CDT	S 5.8	10.00	Clear	--	50.0	30.7	47%	NA	NA	30.41	1029.8
06:35 PM CDT	5.8	10.00	Clear	--	50.5	31.1	47%	NA	NA	30.41	1029.8
06:15 PM CDT	S 8.1	10.00	Clear	--	51.1	31.5	47%	NA	NA	30.41	1029.8
05:55 PM CDT	S 8.1	10.00	Clear	--	53.4	31.1	42%	NA	NA	30.42	1030.1
05:35 PM CDT	S 5.8	10.00	Clear	--	55.0	31.3	40%	NA	NA	30.42	1030.1
05:15 PM CDT	S 10.3	10.00	Clear	--	55.9	31.3	39%	NA	NA	30.42	1030.1
04:55 PM CDT	6.9	10.00	Clear	--	56.7	31.8	39%	NA	NA	30.43	1030.5
04:35 PM CDT	6.9	10.00	Clear	--	57.2	30.4	36%	NA	NA	30.43	1030.5
04:15 PM CDT	S 8.1	10.00	Clear	--	57.2	30.2	36%	NA	NA	30.44	1030.8
03:55 PM CDT	10.3	10.00	Clear	--	57.2	30.2	36%	NA	NA	30.44	1030.8
03:35 PM CDT	8.1	10.00	Clear	--	57.7	30.2	35%	NA	NA	30.45	1031.2
03:15 PM CDT	S 8.1	10.00	NULL	--	57.2	29.3	34%	NA	NA	30.46	1031.5
02:55 PM CDT		10.00	Clear	--	NULL		%	NA	NA		M
02:35 PM CDT	9.2	10.00	Clear	--	56.8	28.2	33%	NA	NA	30.47	1031.8
01:55 PM CDT		10.00	Clear	--	NULL		%	NA	NA		M
01:35 PM CDT	8.1	10.00	Clear	--	54.9	28.9	37%	NA	NA	30.51	1033.2
01:15 PM CDT	4.7	10.00	Clear	--	54.1	30.2	40%	NA	NA	30.52	1033.5
12:55 PM CDT	SW 5.8	10.00	Clear	--	54.1	30.4	40%	NA	NA	30.53	1033.9
12:35 PM CDT	S 5.8	10.00	Clear	--	52.9	28.0	38%	NA	NA	30.54	1034.2
12:15 PM CDT	6.9	10.00	Clear	--	52.0	26.6	37%	NA	NA	30.56	1034.6
11:55 AM CDT	5.8	10.00	Clear	--	51.3	29.3	43%	NA	NA	30.56	1034.9
11:35 AM CDT	6.9	10.00	Clear	--	50.4	31.1	47%	NA	NA	30.56	1034.9
11:15 AM CDT	SW 3.4	10.00	Clear	--	49.8	28.9	44%	49.1	NA	30.56	1034.9
10:55 AM CDT	4.7	10.00	Clear	--	48.4	28.9	47%	46.6	NA	30.57	1035.2
10:35 AM CDT	5.8	10.00	Clear	--	47.7	32.7	56%	45.0	NA	30.57	1035.2
10:15 AM CDT	S 3.4	10.00	Clear	--	45.9	36.3	69%	44.6	NA	30.57	1035.2
09:55 AM CDT	0.0	10.00	Clear	--	43.9	39.7	85%	NA	NA	30.57	1035.2
09:35 AM CDT	0.0	10.00	Clear	--	41.4	39.4	93%	NA	NA	30.57	1035.2
09:15 AM CDT	0.0	10.00	Clear	--	40.1		%	NA	NA	30.57	1035.2
08:55 AM CDT	0.0	10.00	Clear	--	37.2	36.5	97%	NA	NA	30.57	1035.2
08:35 AM CDT	0.0	10.00	Clear	--	35.4	34.9	98%	NA	NA	30.56	1034.9
08:15 AM CDT	0.0	10.00	Clear	--	32.9	32.5	99%	NA	NA	30.56	1034.9
07:55 AM CDT	0.0	10.00	Clear	--	31.8	31.6	99%	NA	NA	30.56	1034.6
07:35 AM CDT	0.0	10.00	Clear	--	31.3	30.9	99%	NA	NA	30.56	1034.6
07:15 AM CDT	0.0	1.25	Fog/Mist	--	30.6	29.8	97%	NA	NA	30.56	1034.6
06:55 AM CDT	0.0	10.00	Clear	--	32.0	31.6	99%	NA	NA	30.56	1034.6
06:35 AM CDT	0.0	10.00	Clear	--	30.9	30.0	96%	NA	NA	30.56	1034.6
06:15 AM CDT	0.0	10.00	Clear	--	31.5	30.4	96%	NA	NA	30.56	1034.6
05:55 AM CDT	0.0	10.00	Clear	--	32.0	31.1	96%	NA	NA	30.54	1034.2
05:35 AM CDT	0.0	10.00	Clear	--	32.5	31.6	96%	NA	NA	30.54	1034.2
05:15 AM CDT	0.0	10.00	NULL	--	33.1	32.0	96%	NA	NA	30.54	1034.2
04:55 AM CDT	0.0	10.00	Clear	--	33.6	32.0	94%	NA	NA	30.54	1034.2
04:35 AM CDT	4.7	10.00	Clear	--	35.2	32.9	91%	31.1	NA	30.53	1033.9
04:15 AM CDT	3.4	10.00	Clear	--	34.7	32.0	90%	32.0	NA	30.53	1033.9
03:55 AM CDT	0.0	10.00	Clear	--	33.8	30.4	87%	NA	NA	30.53	1033.9
03:35 AM CDT	4.7	10.00	Clear	--	35.1	32.0	88%	30.9	NA	30.52	1033.5
03:15 AM CDT	0.0	10.00	Clear	--	35.4	32.0	87%	NA	NA	30.52	1033.5
02:55 AM CDT	0.0	10.00	Clear	--	35.1	30.7	84%	NA	NA	30.52	1033.5
02:35 AM CDT	0.0	10.00	Clear	--	37.8	32.9	82%	NA	NA	30.51	1033.2
02:15 AM CDT	0.0	10.00	Clear	--	36.0	32.0	85%	NA	NA	30.52	1033.5
01:55 AM CDT	4.7	10.00	Clear	--	37.8	32.0	80%	34.2	NA	30.51	1033.2
01:35 AM CDT		10.00	Clear	--	NULL		%	NA	NA		M
01:15 AM CDT	3.4	10.00	Clear	--	38.3	32.0	78%	36.0	NA	30.51	1033.2
12:55 AM CDT	4.7	10.00	Clear	--	39.0	32.5	77%	35.6	NA	30.51	1032.9
12:35 AM CDT	5.8	10.00	Clear	--	38.8	32.0	76%	34.5	NA	30.51	1032.9