Johnston, IA Current Weather Conditions

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

▼Current Conditions — Johnston, IA

AMES (KAMW)

Clear

32.0 F

Humidity:	86%
Wind Speed:	13.8 mph
Barometer:	30.10 in
Dewpoint:	28.4 F
Visibility:	10.00 mi
Precip:	--
Heat Index:	NA
Wind Chill:	22.1 F

Nov 12 2026, 06:55 AM CST

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▼Hourly Observation History — Johnston, IA

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)
06:55 AM CST	13.8	10.00	Clear	--	32.0	28.4	86%	22.1	NA	30.10	1019.3
05:35 AM CST	10.4	10.00	Clear	--	33.8	28.4	80%	25.7	NA	30.08	1018.6
05:15 AM CST	12.7	10.00	Clear	--	33.8	30.2	86%	24.8	NA	30.08	1018.6
04:53 AM CST		10.00	Clear	--	NULL		%	NA	NA		M
04:40 AM CST	13.8	10.00	Clear	--	35.6	30.2	81%	26.6	NA	30.07	1018.3
04:30 AM CST	15.0 G 20.7	10.00	Clear	--	35.6	30.2	81%	26.2	NA	30.06	1017.9
04:00 AM CST	13.8	10.00	Clear	--	35.6	32.0	87%	26.6	NA	30.06	1017.9
03:55 AM CST	12.7	10.00	Clear	--	35.6	32.0	87%	27.0	NA	30.06	1017.9
03:30 AM CST	13.8	10.00	Clear	--	35.6	32.0	87%	26.6	NA	30.05	1017.6
03:15 AM CST	12.7	10.00	Clear	--	35.6	32.0	87%	27.0	NA	30.05	1017.6
02:55 AM CST	12.7	10.00	Clear	--	37.4	33.8	87%	29.3	NA	30.05	1017.6
02:45 AM CST	12.7	10.00	Clear	--	37.4	33.8	87%	29.3	NA	30.04	1017.3
02:30 AM CST	11.5 G 17.3	10.00	Clear	--	37.4	33.8	87%	29.8	NA	30.05	1017.6
01:20 AM CST	10.4	10.00	Clear	--	39.2	35.6	87%	32.5	NA	30.03	1016.9
01:15 AM CST	11.5	10.00	Clear	--	39.2	35.6	87%	32.0	NA	30.03	1016.9
01:05 AM CST	12.7	10.00	Clear	--	39.2	35.6	87%	31.6	NA	30.03	1016.9
12:50 AM CST	10.4	10.00	Clear	--	39.2	35.6	87%	32.5	NA	30.03	1016.9
12:20 AM CST	13.8 G 21.9	10.00	Clear	--	42.8	35.6	76%	35.8	NA	30.03	1016.9
11:53 PM CST	15.0	10.00	Clear	--	42.1	36.0	79%	34.5	NA	30.02	1016.6
11:35 PM CST	15.0	10.00	Clear	--	42.8	37.4	81%	35.4	NA	30.02	1016.6
11:25 PM CST	12.7	10.00	Clear	--	42.8	37.4	81%	36.1	NA	30.02	1016.6
10:55 PM CST	10.4 G 16.1	10.00	Clear	--	44.6	37.4	76%	39.2	NA	30.01	1016.3
10:40 PM CST	NW 10.4 G 18.4	10.00	Clear	--	44.6	37.4	76%	39.2	NA	30.01	1016.3
10:25 PM CST	NW 10.4	10.00	Clear	--	44.6	37.4	76%	39.2	NA	30.01	1016.3
10:20 PM CST	NW 9.2	10.00	Clear	--	44.6	37.4	76%	39.7	NA	30.01	1016.3
10:05 PM CST	11.5	10.00	Clear	--	46.4	39.2	76%	41.0	NA	30.01	1016.3
09:25 PM CST	11.5	10.00	Clear	--	46.4	39.2	76%	41.0	NA	30.01	1016.3
08:53 PM CST		10.00	Clear	--	NULL		%	NA	NA		M
08:50 PM CST	NW 8.1	10.00	Clear	--	46.4	39.2	76%	42.4	NA	30.01	1016.3
08:00 PM CST	10.4	10.00	Clear	--	46.4	41.0	81%	41.4	NA	30.00	1015.9
07:50 PM CST	10.4	10.00	Clear	--	48.2	41.0	76%	43.7	NA	30.00	1015.9
07:15 PM CST	12.7 G 19.6	10.00	NULL	--	48.2	39.2	71%	43.0	NA	30.00	1015.9
06:15 PM CST	13.8	10.00	Partly Cloudy	--	51.8	41.0	67%	NA	NA	29.99	1015.6
05:53 PM CST	12.8	10.00	Clear	--	52.0	42.1	69%	NA	NA	29.98	1015.2
05:50 PM CST	11.5	10.00	Clear	--	51.8	42.8	71%	NA	NA	29.98	1015.2
05:40 PM CST	NW 11.5	10.00	Clear	--	51.8	42.8	71%	NA	NA	29.98	1015.2
05:35 PM CST	NW 10.4	10.00	Clear	--	51.8	41.0	67%	NA	NA	29.97	1014.9
05:20 PM CST	11.5 G 17.3	10.00	Clear	--	53.6	41.0	62%	NA	NA	29.97	1014.9
05:05 PM CST	10.4	10.00	Clear	--	53.6	41.0	62%	NA	NA	29.96	1014.6
04:50 PM CST	13.8	10.00	Clear	--	53.6	41.0	62%	NA	NA	29.96	1014.6
04:45 PM CST	13.8	10.00	Mostly Clear	--	53.6	42.8	67%	NA	NA	29.96	1014.6
04:20 PM CST	NW 12.7 G 18.4	10.00	Mostly Cloudy	--	55.4	42.8	62%	NA	NA	29.95	1014.2
03:53 PM CST	9.2 G 24.2	10.00	Cloudy	--	57.9	42.1	55%	NA	NA	29.94	1013.6
03:20 PM CST	NW 9.2	10.00	Cloudy	--	57.2	42.8	59%	NA	NA	29.92	1013.2
03:00 PM CST	NW 10.4	10.00	Cloudy	--	57.2	42.8	59%	NA	NA	29.91	1012.9
02:40 PM CST	NW 9.2	10.00	Cloudy	--	57.2	42.8	59%	NA	NA	29.91	1012.9
02:35 PM CST	11.5	10.00	Cloudy	--	57.2	42.8	59%	NA	NA	29.91	1012.9
01:53 PM CST	12.8	10.00	Cloudy	--	59.0	41.0	51%	NA	NA	29.91	1012.9
01:45 PM CST	9.2	10.00	Cloudy	--	59.0	41.0	51%	NA	NA	29.91	1012.9
01:35 PM CST	NW 8.1	10.00	Cloudy	--	60.8	41.0	48%	NA	NA	29.90	1012.5
12:55 PM CST	11.5	10.00	Mostly Cloudy	--	60.8	39.2	45%	NA	NA	29.90	1012.5
12:45 PM CST	8.1	10.00	Mostly Clear	--	60.8	41.0	48%	NA	NA	29.90	1012.5
12:20 PM CST	6.9	10.00	Clear	--	60.8	39.2	45%	NA	NA	29.89	1012.2
12:10 PM CST	6.9	10.00	Clear	--	60.8	39.2	45%	NA	NA	29.89	1012.2
11:30 AM CST	4.6	10.00	Partly Cloudy	--	59.0	39.2	48%	NA	NA	29.89	1012.2
11:25 AM CST	4.6	9.00	Mostly Cloudy	--	59.0	41.0	51%	NA	NA	29.89	1012.2
11:05 AM CST	3.4	10.00	Cloudy	--	57.2	41.0	55%	NA	NA	29.89	1012.2
10:40 AM CST	0.0	10.00	Mostly Cloudy	--	57.2	41.0	55%	NA	NA	29.90	1012.5
10:25 AM CST	W 4.6	10.00	Mostly Clear	--	57.2	41.0	55%	NA	NA	29.89	1012.2
10:20 AM CST	0.0	10.00	Clear	--	55.4	41.0	58%	NA	NA	29.89	1012.2
09:35 AM CST	3.4	10.00	Clear	--	53.6	41.0	62%	NA	NA	29.88	1011.9
09:15 AM CST	NW 4.6	10.00	Clear	--	51.8	41.0	67%	NA	NA	29.87	1011.5
08:53 AM CST		10.00	Clear	--	NULL		%	NA	NA		M
08:45 AM CST	4.6	10.00	Clear	--	48.2	41.0	76%	46.4	NA	29.87	1011.5
08:35 AM CST	4.6	10.00	Clear	--	48.2	39.2	71%	46.4	NA	29.86	1011.2
08:30 AM CST	4.6	10.00	Clear	--	46.4	39.2	76%	44.2	NA	29.86	1011.2
07:53 AM CST		10.00	Clear	--	NULL		%	NA	NA		M
07:35 AM CST	5.7	10.00	Clear	--	42.8	39.2	87%	39.2	NA	29.84	1010.5
07:10 AM CST	3.4	10.00	Clear	--	39.2	37.4	93%	37.0	NA	29.84	1010.5
07:00 AM CST	0.0	10.00	Clear	--	37.4	37.4	100%	NA	NA	29.83	1010.2
06:45 AM CST	NW 3.4	10.00	Clear	--	39.2	37.4	93%	37.0	NA	29.83	1010.2
06:30 AM CST	NW 4.6	10.00	Clear	--	39.2	37.4	93%	35.8	NA	29.83	1010.2