Climate Johnston - Iowa

	JanJa	FebFe	MarMa	AprAp	MayMa	JunJu
Average high in ºF Av. high Hi	30	35	49	62	72	80
Average low in ºF Av. low Lo	12	17	28	40	51	61
Av. precipitation in inch Av. precip. Pre.	0.98	1.19	2.21	3.71	4.46	5.30
Av. snowfall in inch Snowfall Sn	11	10	6	2	0	0

	JulJu	AugAu	SepSe	OctOc	NovNo	DecDe
Average high in ºF Av. high Hi	85	83	76	63	47	33
Average low in ºF Av. low Lo	65	63	54	42	29	17
Av. precipitation in inch Av. precip. Pre.	4.78	4.04	3.15	2.54	1.94	1.31
Av. snowfall in inch Snowfall Sn	0	0	0	1	2	9

Johnston Climate Graph - Iowa Climate Chart

Day	High ºF	Low ºF	Prec/mo inch	Prec/yr inch	Snow/mo inch	Snow/yr inch
1 Jan	29.8	12.8	0.04	0.04	0.31	0.80
2 Jan	29.7	12.6	0.08	0.08	0.59	1.50
3 Jan	29.7	12.5	0.08	0.08	0.79	2.00
4 Jan	29.7	12.4	0.12	0.12	1.10	2.80
5 Jan	29.7	12.3	0.16	0.16	1.42	3.60
6 Jan	29.6	12.2	0.16	0.16	1.61	4.10
7 Jan	29.6	12.1	0.20	0.20	2.01	5.10
8 Jan	29.7	12.1	0.24	0.24	2.20	5.60
9 Jan	29.7	12.0	0.24	0.24	2.52	6.40
10 Jan	29.7	11.9	0.28	0.28	2.80	7.10
11 Jan	29.7	11.9	0.31	0.31	3.11	7.90
12 Jan	29.8	11.9	0.35	0.35	3.39	8.60
13 Jan	29.8	11.8	0.35	0.35	3.82	9.70
14 Jan	29.8	11.8	0.39	0.39	4.09	10.40
15 Jan	29.9	11.8	0.43	0.43	4.49	11.40
16 Jan	30.0	11.8	0.47	0.47	4.80	12.20
17 Jan	30.0	11.8	0.47	0.47	5.20	13.20
18 Jan	30.1	11.8	0.51	0.51	5.51	14.00
19 Jan	30.2	11.9	0.55	0.55	5.91	15.00
20 Jan	30.2	11.9	0.59	0.59	6.18	15.70
21 Jan	30.3	12.0	0.59	0.59	6.61	16.80
22 Jan	30.4	12.0	0.67	0.67	6.89	17.50
23 Jan	30.5	12.1	0.67	0.67	7.28	18.50
24 Jan	30.6	12.2	0.71	0.71	7.72	19.60
25 Jan	30.7	12.3	0.75	0.75	8.11	20.60
26 Jan	30.9	12.4	0.79	0.79	8.50	21.60
27 Jan	31.0	12.5	0.83	0.83	8.90	22.60
28 Jan	31.1	12.6	0.87	0.87	9.29	23.60
29 Jan	31.2	12.8	0.91	0.91	9.69	24.60
30 Jan	31.4	12.9	0.94	0.94	10.12	25.70
31 Jan	31.6	13.1	0.98	0.98	10.51	26.70

Day	High ºF	Low ºF	Precip. inch	Snow inch	Snow d. inch
01 Dec	37.0	25.0	0.24	0.51	1.0
02 Dec	34.0	18.0	0.04	0.51	1.0
03 Dec	48.9	32.0	0.00	0.00	0.0
04 Dec	51.1	30.9	0.00	0.00	0.0
05 Dec	57.9	30.0	0.00	0.00	0.0
06 Dec	33.1	23.0	0.00	0.00	0.0
07 Dec	48.0	25.0	0.00	0.00	0.0
08 Dec	46.9	35.1	0.00	0.00	0.0
09 Dec	39.9	10.9	0.00	0.00	0.0
10 Dec	21.0	9.0	0.08	0.71	1.0
11 Dec	23.0	15.1	0.00	0.00	1.0
12 Dec	45.0	21.0	0.00	0.00	0.0
13 Dec	30.9	16.0	0.00	0.00	0.0
14 Dec	28.0	10.9	0.00	0.00	0.0
15 Dec	19.0	7.0	0.00	0.00	0.0
16 Dec	28.9	12.0	0.02	0.31	0.0
17 Dec	39.0	19.9	0.00	0.00	0.0
18 Dec	30.9	8.1	0.00	0.00	0.0
19 Dec	50.0	21.9	0.00	0.00	0.0
20 Dec	48.9	28.9	0.00	0.00	0.0
21 Dec	52.0	25.0	0.00	0.00	0.0
22 Dec	57.0	33.1	0.00	0.00	0.0
23 Dec	48.9	33.1	0.00	0.00	0.0
24 Dec	53.1	37.0	0.00	0.00	0.0
25 Dec	61.0	30.0	0.00	0.00	0.0
26 Dec	37.9	30.0	0.00	0.00	0.0
27 Dec	-	-	0.00	0.00	0.0

	Dec 19	Normal
Average high temperature Av. high temp.	41.2 ºF	33 ºF
Average low temperature Av. low temp.	22.6 ºF	17 ºF
Total precipitation Total precip.	0.38 inch	1.31 inch
Total snowfall Total snowfall	2.04 inch	9 inch

Highest max temperature Highest max temp.	61.0 ºF	-
Lowest max temperature Lowest max temp.	19.0 ºF	-
Highest min temperature Highest min temp.	37.0 ºF	-
Lowest min temperature Lowest min temp.	7.0 ºF	-

Past weather December 2019 incomplete - Missing data

Station Data

Monthly averages Johnston
Longitude: -93.7058, Latitude: 41.6714
Average weather Johnston, IA - 50131

Monthly: 1981-2010 normals
History: 2008-2019

Abbreviations

Average precipitation in : Av. precipitation in
Jan: January, Feb: February, ...Jan: January, Feb: February, ...Ja: January, Fe: February, ...