Mount Vernon, IL Current Weather Conditions

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

▼Current Conditions — Mount Vernon, IL

CENTRALIA (KENL)

Fog/Mist

34.9 F

Humidity:	96%
Wind Speed:	E 3.4 mph
Barometer:	30.48 in
Dewpoint:	34.0 F
Visibility:	5.00 mi
Precip:	--
Heat Index:	NA
Wind Chill:	32.2 F

Oct 18 2026, 03:35 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 — Illinois

Temperature

Dewpoint

Wind Speed

Full Interactive Observation Map →

▼Radar — Illinois

Loading radar…

Active Alerts Lightning

Full Interactive Radar Map →

▼Hourly Observation History — Mount Vernon, 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)
03:35 AM CDT	E 3.4	5.00	Fog/Mist	--	34.9	34.0	96%	32.2	NA	30.48	1032.2
03:15 AM CDT	E 4.7	5.00	Fog/Mist	--	35.2	34.3	96%	31.1	NA	30.48	1032.2
02:55 AM CDT	E 3.4	4.00	Fog/Mist	--	36.1	35.4	97%	33.6	NA	30.49	1032.5
02:35 AM CDT	0.0	4.00	Fog/Mist	--	36.3	35.6	97%	NA	NA	30.49	1032.5
02:15 AM CDT	0.0	4.00	Fog/Mist	--	36.0	35.2	97%	NA	NA	30.48	1032.2
01:55 AM CDT	E 3.4	5.00	Fog/Mist	--	36.7	36.0	97%	34.2	NA	30.48	1032.2
01:35 AM CDT		5.00	Fog/Mist	--	NULL		%	NA	NA		M
01:15 AM CDT	0.0	1.50	Fog/Mist	--	37.4	36.7	97%	NA	NA	30.48	1032.2
12:55 AM CDT	0.0	1.75	Fog/Mist	--	37.4	36.5	97%	NA	NA	30.48	1032.2
12:35 AM CDT	3.4	2.50	Fog/Mist	--	37.8	37.0	97%	35.4	NA	30.48	1032.2
12:15 AM CDT	0.0	7.00	Clear	--	38.3	37.4	97%	NA	NA	30.48	1032.2
11:55 PM CDT	0.0	1.75	Fog/Mist	--	39.2	38.5	97%	NA	NA	30.49	1032.5
11:35 PM CDT	0.0	5.00	Fog/Mist	--	39.0	38.1	97%	NA	NA	30.49	1032.5
11:15 PM CDT	0.0	4.00	Fog/Mist	--	39.2	38.3	97%	NA	NA	30.49	1032.5
10:55 PM CDT		10.00	Clear	--	NULL		%	NA	NA		M
10:35 PM CDT	0.0	7.00	Clear	--	39.2	37.9	95%	NA	NA	30.49	1032.5
10:15 PM CDT		3.00	Fog/Mist	--	NULL		%	NA	NA		M
09:55 PM CDT	0.0	10.00	Clear	--	40.1	37.8	91%	NA	NA	30.49	1032.5
09:35 PM CDT	0.0	10.00	Clear	--	41.0	38.3	90%	NA	NA	30.49	1032.5
09:15 PM CDT	0.0	10.00	Clear	--	41.9	38.8	89%	NA	NA	30.49	1032.5
08:55 PM CDT	0.0	10.00	Clear	--	41.5	38.3	88%	NA	NA	30.49	1032.5
08:35 PM CDT	0.0	10.00	Clear	--	41.9	38.8	89%	NA	NA	30.48	1032.2
08:15 PM CDT	0.0	2.50	Fog/Mist	--	42.3	38.3	86%	NA	NA	30.48	1032.2
07:55 PM CDT	0.0	5.00	Haze	--	43.9	37.6	78%	NA	NA	30.48	1032.2
07:35 PM CDT	0.0	3.00	Haze	--	45.0	37.6	75%	NA	NA	30.48	1032.2
07:15 PM CDT	0.0	7.00	Clear	--	46.9	35.8	65%	NA	NA	30.48	1032.2
06:55 PM CDT	0.0	3.00	Haze	--	50.0	34.3	55%	NA	NA	30.48	1032.2
06:35 PM CDT	0.0	10.00	Clear	--	53.4	32.0	44%	NA	NA	30.47	1031.8
06:15 PM CDT	0.0	10.00	Clear	--	55.6	31.6	40%	NA	NA	30.47	1031.8
05:55 PM CDT	0.0	10.00	Clear	--	57.0	30.7	37%	NA	NA	30.47	1031.8
05:35 PM CDT	0.0	10.00	Clear	--	58.1	29.1	33%	NA	NA	30.47	1031.8
05:15 PM CDT		10.00	Clear	--	NULL		%	NA	NA		M
04:55 PM CDT	3.4	10.00	Clear	--	59.2	30.2	33%	NA	NA	30.47	1031.8
04:35 PM CDT	0.0	10.00	Clear	--	59.2	29.7	32%	NA	NA	30.48	1032.2
04:15 PM CDT	4.7	10.00	Clear	--	59.0	30.2	33%	NA	NA	30.49	1032.5
03:55 PM CDT	3.4	10.00	Clear	--	59.2	30.6	34%	NA	NA	30.49	1032.5
03:35 PM CDT	0.0	10.00	Clear	--	58.8	29.8	33%	NA	NA	30.49	1032.5
03:15 PM CDT	5.8	10.00	Clear	--	58.3	30.6	35%	NA	NA	30.49	1032.5
02:55 PM CDT	E 4.7	10.00	Clear	--	58.3	31.3	36%	NA	NA	30.49	1032.5
02:35 PM CDT	6.9	10.00	Clear	--	58.6	31.5	36%	NA	NA	30.51	1032.9
01:35 PM CDT	NE 3.4	4.00	Haze	--	57.0	32.2	39%	NA	NA	30.52	1033.5
01:15 PM CDT		10.00	Clear	--	NULL		%	NA	NA		M
12:55 PM CDT	NE 6.9	10.00	Clear	--	56.3	34.7	44%	NA	NA	30.54	1034.2
12:35 PM CDT	NE 8.1	10.00	Clear	--	55.0	34.3	45%	NA	NA	30.56	1034.6
12:15 PM CDT	6.9	10.00	Clear	--	54.7	35.2	48%	NA	NA	30.56	1034.6
11:55 AM CDT	5.8	10.00	Clear	00.01	54.0	35.4	49%	NA	NA	30.56	1034.6
11:35 AM CDT	NE 6.9	10.00	Clear	00.01	53.6	37.0	53%	NA	NA	30.56	1034.6
11:15 AM CDT	6.9	10.00	Clear	00.01	52.5	37.6	57%	NA	NA	30.56	1034.9
10:55 AM CDT	9.2	10.00	Partly Cloudy	--	51.8	37.6	58%	NA	NA	30.57	1035.2
10:35 AM CDT	8.1	10.00	Partly Cloudy	--	51.3	39.7	65%	NA	NA	30.57	1035.2
10:15 AM CDT	6.9	10.00	Mostly Cloudy	--	51.4	40.3	66%	NA	NA	30.57	1035.2
09:55 AM CDT	6.9	10.00	Clear	--	49.6	39.7	69%	46.8	NA	30.57	1035.2
09:35 AM CDT	8.1	10.00	Clear	--	48.6	39.4	70%	45.0	NA	30.56	1034.9
09:15 AM CDT	4.7	10.00	Clear	--	47.5	39.2	73%	45.5	NA	30.56	1034.9
08:55 AM CDT	4.7	10.00	Clear	--	46.6	38.5	73%	44.4	NA	30.56	1034.6
08:35 AM CDT	5.8	10.00	Clear	--	45.7	38.5	76%	42.6	NA	30.56	1034.6
08:15 AM CDT	5.8	10.00	Clear	--	44.6	38.8	80%	41.4	NA	30.54	1034.2
07:55 AM CDT	5.8	10.00	NULL	--	43.7	38.7	82%	40.3	NA	30.52	1033.5
07:35 AM CDT	4.7	10.00	Clear	--	42.8	38.7	85%	39.9	NA	30.52	1033.5
07:15 AM CDT	5.8	10.00	Clear	--	41.9	38.5	88%	38.1	NA	30.52	1033.5
06:55 AM CDT	4.7	10.00	Clear	--	42.4	38.3	85%	39.6	NA	30.51	1033.2
06:35 AM CDT	5.8	10.00	Clear	--	42.8	38.7	85%	39.2	NA	30.51	1033.2
06:15 AM CDT	6.9	10.00	Clear	--	43.0	38.8	85%	38.8	NA	30.51	1032.9
05:55 AM CDT		10.00	Clear	--	NULL		%	NA	NA		M
05:35 AM CDT	5.8	10.00	Clear	--	43.7	39.2	84%	40.3	NA	30.48	1032.2
05:15 AM CDT	6.9	10.00	Clear	--	44.8	39.7	82%	41.0	NA	30.48	1032.2
04:55 AM CDT	8.1	10.00	Clear	--	45.1	40.1	82%	40.8	NA	30.47	1031.8
04:35 AM CDT	8.1	10.00	Clear	--	45.3	40.6	84%	41.0	NA	30.47	1031.8
04:15 AM CDT	6.9	10.00	Clear	--	45.5	41.0	84%	41.7	NA	30.46	1031.5
03:55 AM CDT	8.1	10.00	Clear	--	46.0	41.0	82%	41.9	NA	30.46	1031.5
03:35 AM CDT	8.1	10.00	Clear	--	46.6	41.5	83%	42.6	NA	30.45	1031.2
03:15 AM CDT	8.1	10.00	Clear	--	47.1	42.3	83%	43.2	NA	30.44	1030.8