2018 IA_ASOS Monthly Precipitation

This report summarizes available ASOS daily precipitation totals by station and month. No attempt was made to estimate missing data.

Generated 09 Jul 2026 9:33 am CDT for 61 station(s).

MJJA is the May through August seasonal total. Use the interactive table for sorting, filtering, and export tools. The static table remains available until you choose the interactive view.

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Monthly Precipitation Data

Units: inches Stations: 61

Monthly and seasonal (MJJA) precipitation totals (inches) for stations in the IA_ASOS network, year 2018. M denotes missing.
ID	Name	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	MJJA	Year
ADU	AUDUBON	0.48	0.45	1.67	0.95	4.38	6.10	1.90	5.35	4.90	4.13	0.80	1.95	17.73	33.06
AIO	ATLANTIC	0.22	0.19	1.05	0.21	1.33	0.96	0.39	1.15	1.30	0.17	0.73	2.62	3.83	10.32
ALO	Waterloo	2.27	2.26	1.67	1.55	3.02	7.24	3.60	6.06	13.35	5.66	2.43	2.50	19.92	51.61
AMW	Ames	1.13	0.82	3.23	1.33	6.05	11.84	4.80	6.97	7.88	3.42	1.82	1.96	29.66	51.25
AWG	WASHINGTON	M	M	M	M	1.77	4.08	1.55	4.18	2.93	3.26	1.07	1.81	11.58	20.65
AXA	Algona	0.41	0.17	1.15	0.72	5.15	6.38	2.19	5.04	4.72	2.65	0.88	1.53	18.76	30.99
BNW	BOONE MUNI	0.97	0.65	1.96	1.16	3.21	11.15	1.74	4.51	4.45	3.29	0.86	1.33	20.61	35.28
BRL	BURLINGTON	0.61	3.35	2.90	0.59	3.16	4.91	2.61	3.84	6.02	5.72	2.22	2.33	14.52	38.26
CAV	CLARION	0.50	0.48	0.36	1.90	3.20	6.54	1.92	4.00	5.51	3.45	1.37	1.62	15.66	30.85
CBF	COUNCIL BLUFFS	0.81	0.27	1.89	0.36	2.21	8.81	1.24	6.33	1.98	0.89	0.93	2.20	18.59	27.92
CCY	Charles City	1.60	0.63	0.65	2.37	5.99	9.00	3.05	6.77	11.64	3.46	1.67	2.10	24.81	48.93
CID	CEDAR RAPIDS	0.45	1.58	1.90	0.43	4.55	9.05	2.28	5.47	6.69	3.87	1.70	2.10	21.35	40.08
CIN	CARROLL	0.39	0.24	1.92	0.92	2.94	8.91	1.28	7.62	5.27	2.58	0.46	0.98	20.75	33.51
CKP	Cherokee	0.14	0.22	1.01	0.74	3.50	4.80	1.59	1.86	4.10	1.25	0.42	0.83	11.75	20.46
CNC	CHARITON	1.10	0.92	1.60	0.75	3.33	4.80	0.86	5.97	6.49	6.83	1.14	2.43	14.96	36.22
CSQ	CRESTON	0.22	0.33	0.47	0.16	0.27	5.90	1.92	3.33	3.72	0.59	0.66	1.53	11.42	19.10
CWI	CLINTON	0.28	1.52	1.32	0.54	3.14	5.66	2.12	5.68	5.96	4.91	1.47	1.83	16.60	34.44
DBQ	DUBUQUE	1.14	2.83	1.84	1.56	5.45	7.24	3.55	7.81	8.93	6.42	1.87	2.01	24.05	50.65
DEH	DECORAH	1.09	0.86	0.80	2.40	8.23	5.81	3.19	3.37	8.26	3.87	1.74	1.52	20.60	41.14
DNS	DENISON	0.36	0.22	2.00	0.27	3.27	9.51	2.93	5.28	3.78	2.96	0.63	1.92	20.99	33.13
DSM	Des Moines	1.02	1.77	2.37	1.64	5.49	7.30	0.38	3.93	8.32	3.16	1.58	2.90	17.10	39.87
DVN	QUAD CITIES	0.30	2.47	2.04	0.72	4.71	6.65	1.31	6.58	6.87	6.70	2.85	2.44	19.25	43.64
EBS	Webster City	0.71	0.18	1.26	1.40	3.68	8.83	0.53	7.58	5.20	3.45	1.09	1.65	20.62	35.56
EOK	KEOKUK MUNI	0.17	1.78	1.73	0.13	1.41	4.06	2.59	4.14	6.98	3.06	1.54	0.79	12.20	28.38
EST	ESTHERVILLE	0.12	0.06	0.79	1.30	7.37	8.63	4.02	3.88	8.64	2.30	1.09	1.34	23.90	39.55
FFL	FAIRFIELD	0.10	1.60	2.05	0.34	3.31	3.18	1.15	4.30	5.76	3.77	1.75	2.07	11.94	29.38
FOD	FORT DODGE	0.67	0.67	2.30	2.16	5.48	7.92	1.83	13.67	5.12	3.88	1.28	1.91	28.90	46.90
FSW	FORT MADISON	0.10	0.38	M	M	0.38	M	M	0.15	M	M	0.00	0.00	0.53	1.01
FXY	Forest City	0.32	0.19	0.46	0.85	4.35	10.80	4.12	4.77	9.62	2.49	0.33	0.55	24.04	38.85
GGI	Grinnell	0.84	0.45	1.28	0.25	4.72	5.31	2.76	3.91	9.12	5.15	1.10	1.21	16.70	36.10
HNR	HARLAN	0.44	0.11	1.49	2.14	2.58	2.92	0.52	5.45	3.73	2.89	0.00	1.12	11.47	23.39
HPT	Hampton	M	M	M	M	3.89	0.33	0.04	4.03	9.22	3.37	1.34	1.32	8.29	23.54
I75	Osceola	0.59	0.30	1.81	0.44	3.57	7.68	1.46	3.76	2.38	5.44	0.84	1.74	16.47	30.01
ICL	CLARINDA	0.43	0.32	2.66	0.39	1.19	4.18	2.48	4.19	6.05	3.83	0.56	1.64	12.04	27.92
IFA	Iowa Falls	0.53	0.51	1.11	0.79	3.74	3.58	1.99	4.63	6.38	4.31	1.29	1.04	13.94	29.90
IIB	INDEPENDENCE	0.81	0.65	0.68	0.93	2.91	1.80	0.18	1.87	6.58	2.02	1.14	0.42	6.76	19.99
IKV	ANKENY	0.77	0.58	2.11	0.83	4.71	3.69	0.04	3.64	6.14	2.63	0.00	0.00	12.08	25.14
IOW	IOWA CITY	0.29	2.46	3.14	0.68	3.77	7.69	2.52	8.18	7.05	7.22	2.65	2.38	22.16	48.03
LRJ	LE MARS	M	M	M	0.00	M	M	M	1.80	7.02	2.56	1.33	1.39	1.80	14.10
LWD	LAMONI	1.39	1.64	2.39	0.79	4.54	6.16	1.08	6.21	7.05	6.70	1.86	2.84	17.99	42.65
MCW	MASON CITY	1.13	0.72	0.95	2.50	7.04	7.69	3.75	4.46	8.03	4.07	1.13	1.58	22.94	43.06
MIW	MARSHALLTOWN	1.23	0.96	2.49	0.99	4.32	5.23	2.96	6.06	8.22	3.18	1.93	2.26	18.57	39.83
MPZ	MOUNT PLEASANT	0.04	0.35	1.41	0.10	2.46	1.57	0.44	2.93	4.00	3.18	0.83	1.03	7.40	18.34
MUT	MUSCATINE	0.04	1.81	1.21	M	M	M	M	0.03	0.38	M	0.00	0.00	0.03	3.47
MXO	MONTICELLO MUNI	0.72	1.32	1.23	0.75	4.71	5.23	3.34	8.72	7.98	3.97	1.68	1.41	22.00	41.06
OLZ	OELWEIN	1.03	0.55	0.93	1.33	3.91	2.63	0.25	2.25	8.25	2.19	M	M	9.04	23.32
OOA	Oskaloosa	0.19	0.82	1.35	0.18	3.18	4.00	1.49	2.42	3.82	4.00	1.53	1.50	11.09	24.48
ORC	Orange City	0.09	0.25	2.47	1.03	4.28	10.49	3.66	5.07	9.25	2.83	1.34	1.69	23.50	42.45
OTM	OTTUMWA	0.32	0.96	0.30	0.45	3.41	4.58	2.38	6.70	5.06	5.01	1.83	2.32	17.07	33.33
OXV	Knoxville	0.78	0.85	2.06	0.08	0.90	0.69	0.19	1.21	1.40	0.69	1.11	1.75	2.99	11.71
PEA	PELLA	0.51	0.22	0.57	0.18	2.54	0.16	0.23	0.74	6.10	5.39	1.05	1.04	3.67	18.73
PRO	Perry	0.41	0.32	1.63	0.36	4.00	8.13	0.83	3.83	2.26	3.05	0.48	1.34	16.79	26.64
RDK	RED OAK	0.39	0.22	1.33	0.28	2.88	5.34	1.95	0.74	5.74	3.74	0.42	2.55	10.91	25.58
SDA	SHENANDOAH MUNI	0.24	0.29	1.35	0.15	2.87	4.02	0.91	0.15	0.06	0.00	0.00	0.00	7.95	10.04
SHL	SHELDON	0.00	0.15	1.84	0.44	0.55	1.71	0.10	2.10	7.01	0.23	0.62	0.79	4.46	15.54
SLB	Storm Lake	0.12	0.11	2.07	0.42	3.25	2.53	1.12	3.43	3.99	1.39	0.38	1.07	10.33	19.88
SPW	SPENCER	0.01	0.05	2.46	0.70	3.45	6.98	0.74	2.16	8.51	0.67	0.18	0.74	13.33	26.66
SUX	SIOUX CITY	1.19	1.05	1.95	0.87	3.71	8.63	2.30	4.51	7.42	2.84	0.93	1.83	19.15	37.24
TNU	NEWTON MUNI	0.97	0.52	0.78	0.23	2.14	1.80	M	2.30	10.20	4.17	1.18	1.69	6.24	25.98
TVK	Centerville	0.18	0.44	2.24	0.40	2.22	3.30	0.93	5.10	5.31	4.79	1.43	2.98	11.55	29.32
VTI	VINTON	M	M	M	0.03	M	M	M	0.74	3.34	3.09	0.20	0.21	0.74	7.61