NWS COOP Climatology for 21 August

This table gives a listing of unofficial daily records for NWS COOP stations. Some records may have occured on multiple years, only one is listed here. You may click on a column to sort it. You can click on the station name to get all daily records for that station or click on the date to get all records for that date.

The data found in this table was derived from the following JSON webservice:
https://mesonet.agron.iastate.edu/geojson/climodat_dayclimo.py?network=IACLIMATE&month=8&day=21&syear=1800&eyear=2025

Select State:	Select Date:	Select Record Database:
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Station	Years	High Temperature [F]						Low Temperature [F]						Precipitation [inch]
		Avg:	Max:	Year:	Min:	Year:		Avg:	Max:	Year:	Min:	Year:		Avg:	Max:	Year:
KEOKUK LOCK DAM 19 (IA4381)	170	84.2	102	1936, 1983	68	1897		64.5	82	1936	49	1956		0.10	1.49	1977
LAMONI (IA4587)	26	84.5	98	2003	71	2009		64.3	74	2023	51	2004		0.10	1.13	2017
MUSCATINE 2N (IA5844)	26	81.8	95	2003	74	2002, 2004		63.8	73	2023	52	2012		0.11	1.06	2018
Le Claire L&D 14 (IA4705)	86	82.1	95	1947	70	1990		63.8	78	1972, 1955, 1947	49	1940		0.13	3.50	1987
Fort Madison (IA3007)	136	84.5	102	1936, 1983	73	2009, 1956		63.6	77	1900, 1916	46	1956, 1950		0.07	1.63	1964
BURLINGTON (IA1060)	59	83.5	101	2003	72	2009		63.6	76	2003	49	1967		0.08	0.79	2014
DES MOINES WSFO-JOHNSTON (IA2209)	30	82.3	94	2001	71	2009		63.2	73	2014, 2023, 2013	52	2004, 1997		0.07	1.76	2017
Burlington Airport (IA1063)	127	84.4	101	1947	69	1915		63.1	77	1936	44	1950		0.07	1.11	1904
Des Moines Airport (IA2203)	146	83.9	102	1936	68	1946		63.0	80	1886	47	1950		0.11	2.92	1946
Des Moines Area (IATDSM)	146	83.9	102	1936	68	1946		63.0	80	1886	47	1950		0.11	2.92	1946
Ottumwa (IA6389)	128	84.5	104	1936	68	1965		62.8	78	1900, 1983, 1913	48	1950		0.08	1.55	1955
RATHBUN DAM (IA6910)	54	83.2	98	1983	72	2004		62.7	78	1983	52	2012		0.09	1.16	2007
DUBUQUE-LOCK-AND-DAM (IA2364)	151	81.9	97	1936, 1947, 2003, 1886	69	1990, 1951		62.3	76	1972, 1959, 1886	47	1950		0.11	1.96	1964
Iowa - Southeast Climate Division (IAC009)	131	84.2	102	1936	73	2004, 1956		62.3	78	1983, 1955, 2003	43	1950		0.10	1.65	1964
SHENANDOAH-1-NE (IA7613)	106	85.6	102	1936	70	2018		62.2	76	1955	43	1939		0.10	1.66	2017
Iowa - South Central Climate Division (IAC008)	131	84.4	101	1936	72	1956		62.2	78	2003	44	1950		0.11	1.11	1964
CENTERVILLE (IA1354)	131	84.2	102	1983	72	2004		62.1	77	2003	46	1956, 1950		0.11	1.95	1951
IOWA CITY MUNICIPAL AP (IA4106)	80	82.5	98	1947	70	2009		62.0	75	1983	44	1950		0.08	1.17	1964
Iowa Drought Region 5 - Southeast (IAD005)	131	84.0	101	1936	72	1956		62.0	78	2003	44	1950		0.11	1.41	1964
Iowa - Southwest Climate Division (IAC007)	131	84.8	99	1936	72	2018		62.0	76	1955	47	1950		0.14	1.74	1966
Lamoni (IA4585)	127	84.3	101	1936	69	1965		62.0	77	1983	45	1950		0.11	1.41	1933
Iowa Drought Region 4 - Southwest (IAD004)	131	84.6	98	2003, 1955, 1936, 1929	72	2018		61.7	76	1955	48	1950, 1939		0.14	1.64	1966
DAVENPORT WFO (IA2070)	13	81.6	89	2023	73	2016		61.7	69	2014, 2013, 2023	49	2012		0.02	0.11	2014
MOUNT-AYR (IA5769)	132	84.1	98	2003	71	2016		61.7	78	1948	45	1956		0.12	2.00	1933
KEOSAUQUA (IA4389)	148	85.9	103	1936	70	1897		61.7	76	1936	43	1950		0.08	2.57	1910
GUTTENBERG-L-AND-D-10 (IA3517)	87	82.0	97	1955	69	2009		61.7	76	1968	45	1950		0.15	2.78	1966
WASHINGTON (IA8688)	163	84.2	101	1936	72	1907		61.6	78	1983	42	1950		0.06	1.25	1964
COLUMBUS JUNCT 2 SSW (IA1731)	123	83.6	100	1924	71	2009, 1965		61.6	79	1924	40	1950		0.08	1.44	1964
Allerton (IA0149)	122	84.1	103	1936	70	2004		61.6	75	1916, 1983, 1936	45	1950		0.10	1.19	1933
Donnellson (IA2299)	87	83.8	99	1983, 1947	74	2004, 1990		61.5	74	2023	45	1950		0.12	1.49	1975
MUSCATINE (IA5837)	185	84.2	99	1983	66	2015		61.5	76	1947	44	1950		0.08	2.04	1964
GREENFIELD (IA3438)	133	84.2	100	1947	70	1961		61.5	74	1924, 2003, 1975	45	1950		0.12	4.93	1933
RED-OAK (IA6940)	152	85.3	100	1975	71	2018		61.5	75	1955	44	1939		0.11	1.78	1922
MOUNT-PLEASANT (IA5796)	160	84.4	101	1936	73	1907, 1990		61.4	76	1983	40	1950		0.07	1.50	2014
FAIRFIELD (IA2789)	169	84.7	103	1936	71	1933		61.4	79	2003, 1947	45	1950		0.07	1.11	1974
AMES 5 SE (IA0203)	124	82.9	99	1947	69	1965		61.3	75	1975	47	2012		0.11	1.31	1954
OSCEOLA-3-WSW (IA6316)	142	84.5	101	1936	68	1966		61.2	74	1924, 2023, 1947	45	1950		0.11	2.16	1987
Iowa City (IA4101)	168	84.0	101	2003	72	1990		61.2	75	1983	45	1956		0.08	1.43	2018
NEWTON (IA5992)	155	83.7	100	1936	73	2018, 2009, 1907, 2016, 1990		61.1	75	1955, 1959, 1947	47	1950		0.09	1.61	2007
AMES MUNICIPAL AP (IA0197)	27	81.1	90	2013, 2010	70	2009		61.1	71	2014, 2023	46	2012		0.09	1.65	2017
BEACONSFIELD (IA0536)	73	82.0	98	2003, 1983	70	2012		61.1	74	2003	43	1991		0.13	1.60	1957
SIGOURNEY (IA7678)	148	84.1	101	1936, 2003	74	1964, 2004		61.0	75	1947	46	1950		0.12	1.60	1905
SIOUX-CITY-WSO-AP (IA7708)	135	83.7	99	1955, 1947	64	1961		61.0	75	1918, 1968	47	2004, 1939		0.10	4.28	1961
Sioux City Area (IATSUX)	135	83.7	99	1955, 1947	64	1961		61.0	75	1918, 1968	47	2004, 1939		0.10	4.28	1961
CLINTON-1 (IA1635)	166	83.1	100	1936	71	1990, 1907		61.0	75	1955	45	1950		0.09	2.93	1987
Iowa - East Central Climate Division (IAC006)	131	82.6	99	1936	68	1956		61.0	76	1983	44	1950		0.10	1.71	1964
OSKALOOSA (IA6327)	148	83.6	100	1936, 2003, 1947	71	1908		60.9	74	1972, 1947	44	1950		0.10	1.60	1977
OELWEIN 1E (IA6199)	18	79.4	91	2023	72	2016, 2018, 2009		60.9	68	2023	50	2012		0.18	1.25	2021
CLARINDA (IA1533)	159	84.8	102	1913, 1898	70	2016		60.8	78	1968	43	1950, 1939		0.14	2.20	1922
Iowa Average (IA0000)	131	83.0	98	1947	70	1956		60.7	75	1959, 2003, 1955	46	1950		0.13	1.34	1964
Iowa - Central Climate Division (IAC005)	131	82.8	99	1947	69	1956		60.7	75	1959, 2003, 1955	47	1950		0.13	1.74	1987
CEDAR-RAPIDS-1 (IA1319)	142	83.2	100	1916	69	1990		60.7	74	1983	45	2004, 1950		0.11	2.36	1910, 1987
Iowa - West Central Climate Division (IAC004)	131	83.6	98	1955, 1947	71	1956, 2009		60.7	75	1959, 1955	47	1925, 1939		0.15	1.85	2017
Dubuque Area (IATDBQ)	151	80.9	98	1947	67	1990		60.7	76	1886, 1947	41	2004		0.14	5.99	2002
WINTERSET (IA9132)	131	83.9	100	1936	70	1897		60.6	75	1916, 1959	46	1956, 1970, 1950		0.10	3.72	1946
Cedar Rapids Airport (IA1314)	71	81.5	95	1983, 1955	68	2009		60.5	75	1959	46	2004		0.07	0.86	2017
LOGAN (IA4894)	158	84.9	100	1936, 1955	70	1961		60.5	77	1916	45	1950		0.15	2.40	1986
SIOUX CITY ANG (IA7702)	27	83.2	91	1998	75	2000, 2016		60.4	71	2013	51	2004, 2015		0.12	1.34	2007
Cedar Rapids Area (IATCID)	131	82.6	100	1916	68	2009		60.4	75	1959	45	1950		0.09	2.36	1910
MARSHALLTOWN MUNICIPAL AP (IA5199)	27	80.2	91	2023	69	2009		60.4	71	2014, 2013, 2023	45	2004		0.09	0.89	2017
SPIRIT LAKE (IA7859)	145	81.9	95	1947	67	2009		60.3	80	1983	40	2004		0.17	5.00	2017
CHARITON (IA1394)	129	84.3	104	1936	71	1897		60.2	76	1983	44	1950		0.10	1.50	2007
Creston (IA1962)	119	83.1	100	1936	67	1966		60.2	74	1959	39	1950		0.09	1.61	1966
OAKLAND-2-E (IA6151)	105	83.2	98	1936, 1955	66	1961		60.2	75	1937, 1924	42	1939		0.13	2.16	1941
JEFFERSON (IA4228)	135	83.1	99	1936	70	1961		60.1	76	1959	43	1925		0.12	1.32	1983
Iowa Drought Region 2 - Northcentral (IAD002)	131	82.3	97	1955, 1947	69	1956		60.1	75	1959	45	2004		0.15	1.32	1964
Iowa Drought Region 3 - Northeast (IAD003)	131	81.8	97	1955, 1947	67	1956		60.0	75	2003	45	1950		0.11	1.56	1964
DENISON (IA2171)	149	82.5	100	1955	64	1961		60.0	75	1959	45	1920, 1925, 2023		0.19	6.47	2017
Iowa Drought Region 1 - Northwest (IAD001)	131	83.2	98	1955, 1947	71	2009, 1956		59.9	76	1959	45	1925, 1939		0.13	1.31	1922
ATLANTIC-1-NE (IA0364)	148	84.7	100	1936	69	1961		59.9	76	1924	40	1956		0.13	2.99	2017
LITTLE SIOUX 2NW (IA4874)	37	83.3	93	1998	72	2009, 2018		59.8	70	2023, 2019, 2003	47	2015		0.11	1.74	1998
AMES-8-WSW (IA0200)	131	83.2	101	1936	70	1961		59.8	75	1959	44	1908		0.10	1.55	2007
BELLEVUE-L-AND-D-12 (IA0608)	87	82.0	96	1947, 2003, 1955	70	2009		59.8	76	1968	38	1950		0.18	2.75	1958
Dubuque Airport (IA2367)	73	79.7	95	1955	67	1990		59.8	72	1968	41	2004		0.19	5.99	2002
CORNING (IA1833)	131	83.9	99	1983	70	1961		59.8	73	1959, 1916, 2023	43	1907		0.09	1.49	1922
PRIMGHAR (IA6800)	129	83.1	98	1947	65	1966		59.8	73	1947	38	2004		0.13	3.56	1974
GUTHRIE-CENTER (IA3509)	131	83.5	98	1955, 1900	68	1961		59.8	77	1959	44	2004		0.15	4.85	2017
Ames Area (IATAME)	131	83.0	101	1936	70	1961		59.7	75	1959	44	1908		0.10	1.14	1998
MAPLETON NO. 2 (IA5123)	86	83.0	100	1955	63	1961		59.7	76	1959	44	1939		0.15	2.94	2017
PERRY (IA6566)	123	83.0	102	1936	67	1966		59.7	76	1911	44	1925		0.12	2.40	1998
Boone (IA0807)	119	83.1	101	1936	70	1961		59.7	76	1947	45	1925, 1956, 1927		0.12	2.15	1954
WILLIAMSBURG (IA9067)	145	82.8	97	1947	70	1925		59.7	75	1983	45	1956, 1950		0.10	1.20	1975
VINTON (IA8568)	155	83.1	101	1947	70	2018		59.6	75	1959	41	1950		0.09	1.17	1951
BELLE-PLAINE (IA0600)	135	83.0	101	1936	70	1965		59.6	73	2023, 1983, 1959	41	2012		0.07	1.25	1898
LEMARS (IA4735)	148	83.1	99	1983	70	1966, 1990		59.5	76	1947	39	1925		0.13	2.75	2002
Iowa - Northwest Climate Division (IAC001)	131	82.4	97	1955, 1947	70	1956		59.5	75	1959	44	2004		0.13	1.46	1922
AUDUBON (IA0385)	131	83.0	100	1955	65	1961		59.5	75	1916	43	2004		0.20	5.42	2017
Iowa - Northeast Climate Division (IAC003)	131	81.1	96	1955, 1947, 1916	66	1956		59.5	74	2003	45	2004, 1925, 1950		0.12	1.47	1964
SIOUX CENTER 2 SE (IA7700)	125	83.2	98	1947	68	1966		59.4	74	1947	40	2004		0.14	2.31	2017
CARROLL-2-SSW (IA1233)	135	83.4	101	1947	68	1961		59.4	76	1900, 1959	43	1939		0.17	1.88	1920
ALGONA (IA0133)	163	81.6	98	1947	67	1920		59.3	74	1900	42	2004		0.18	3.88	1979
STORM-LAKE-2-E (IA7979)	147	81.4	98	1955	69	1920, 1904, 1966		59.3	74	1924, 1959	42	2004		0.17	3.92	2002
Ida Grove Area (IATIDA)	121	83.2	100	1955	71	2016, 1966, 1990		59.3	75	1959	45	2004, 2012, 1939		0.21	4.76	2017
Iowa - North Central Climate Division (IAC002)	131	81.3	97	1955, 1947	68	1956		59.3	74	1959	42	2004		0.14	1.44	1951
LOWDEN (IA4963)	37	81.6	95	2003	68	2009		59.2	71	2003	42	2012		0.15	2.28	1987
Postville (IA6766)	133	80.0	99	1955	67	1965		59.1	74	1968	39	2004		0.13	1.92	1964
SAC-CITY (IA7312)	154	82.6	101	1955	66	1961		59.1	76	1959	43	1897		0.15	1.67	1986
WATERLOO (IA8706)	131	82.5	100	1916	69	1965		59.0	75	1947	39	2004		0.09	1.29	1920
Waterloo Area (IATALO)	129	82.5	100	1916	69	1965		59.0	75	1947	39	2004		0.09	1.29	1920
Emmetsburg (IA2689)	131	82.0	98	1955	64	1966		59.0	74	1959	39	2004		0.16	4.83	1979
BATTLE CREEK 3NE (IA0512)	14	82.6	89	2021	71	2016		59.0	69	2013	45	2012		0.54	4.76	2017
GRINNELL-3-SW (IA3473)	136	82.8	100	1947, 1936	71	1969, 2018		59.0	74	1959	42	1967		0.10	1.90	2007
FORT-DODGE (IA2999)	173	82.3	100	1955	67	2018		59.0	76	1959	43	2004, 1925		0.18	2.80	2018
TOLEDO (IA8296)	130	82.7	100	1936, 1947	70	1921		58.9	75	1959	45	2004, 1925		0.12	1.93	2018
ALLISON (IA0157)	110	81.9	102	1947	69	1951		58.9	74	1959, 1947	44	1985, 2004, 1925		0.12	1.85	1966
MARSHALLTOWN (IA5198)	148	83.0	102	1947	71	1990, 1966		58.8	75	1916, 1959	44	1985, 1950		0.10	1.95	1964
ANAMOSA 3 SSW (IA0214)	13	79.9	94	2023	71	2018		58.8	70	2023	48	2012		0.41	2.90	2018
MAQUOKETA-2-W (IA5131)	167	82.2	99	1947, 1936	71	1951		58.8	75	1968	42	1940		0.13	2.30	1980
STANLEY (IA7892)	19	80.2	92	2023	71	2016, 2018		58.8	70	2023	43	2012		0.09	1.22	2021
SIOUX-RAPIDS (IA7726)	83	82.2	102	1947	64	1961		58.7	78	1947	44	2004, 1970		0.15	2.12	2007
CHARLES-CITY (IA1402)	148	81.2	100	1955	68	1951		58.6	75	1959	38	2004		0.11	2.05	1987
GRUNDY-CENTER (IA3487)	131	81.9	98	1936	68	1985		58.6	75	1947	42	2004		0.13	5.00	1966
ESTHERVILLE MUNICIPAL AP (IA2725)	28	79.0	91	2023	69	2000		58.6	70	2013	36	2004		0.15	2.32	2017
Milford (IA5493)	104	80.7	98	1947	65	1961, 1920		58.6	73	1924	39	2004		0.14	3.09	2017
Oelwein Area (IATOEL)	101	81.2	100	1947	67	1951		58.6	75	1947	40	1956		0.19	4.44	1966
OSAGE (IA6305)	158	80.9	102	1955	68	1951, 2004		58.5	74	1959	40	2004		0.12	1.54	1987
WEBSTER-CITY (IA8806)	154	82.8	101	1947	70	1990, 1966, 2016, 2018		58.5	75	1959	41	1908		0.16	5.20	1998
FOREST-CITY (IA2977)	130	81.5	100	1955, 1947	67	1951		58.5	75	1959	38	2004		0.18	6.97	1979
HOLSTEIN 5 NNW (IA3910)	9	80.6	87	2019, 2021	72	2018		58.4	65	2019	51	2016, 2015		0.63	3.28	2017
Spencer (IA7844)	129	82.3	98	1947	65	1945		58.3	76	1926	38	2004		0.13	2.22	2017
HAMPTON-2-NW (IA3584)	147	82.0	103	1955	69	1951, 1985		58.3	76	1968	41	2004		0.15	2.25	2018
Spencer Airport (IAKSPW)	29	81.4	94	2020	70	2000		58.2	72	2013	36	2004		0.08	1.57	2017
NEW-HAMPTON (IA5952)	127	80.5	97	1955, 1947	67	1913		58.2	75	1947	40	2004		0.13	1.48	1964
SANBORN (IA7386)	142	81.3	97	1947, 1968	67	1961, 1990		58.2	79	1947	40	1925		0.11	3.93	1974
Spencer Area (IATSPW)	129	82.4	98	1947	65	1945		58.1	76	1926	36	2004		0.12	1.98	1988
CASCADE (IA1257)	83	81.7	99	1983, 1955	71	1990, 2018		58.1	73	1959	40	1956		0.19	2.23	2018
POCAHONTAS (IA6719)	120	82.0	102	1947	67	1961		58.0	76	1959	42	2004, 1925		0.17	2.47	1966
IOWA-FALLS (IA4142)	160	82.0	100	1955	70	1965, 1966		58.0	73	1924	42	2004		0.15	2.52	1988
MASON CITY MUNICIPAL AP (IA5235)	82	80.4	98	1955	66	1951		58.0	73	1983	36	2004		0.16	3.25	1979
DECORAH-2-N (IA2110)	131	81.8	104	1955	69	1973		58.0	78	1948	38	2004		0.12	2.49	1939
NORTHWOOD (IA6103)	128	80.1	99	1955	67	2004, 2016		57.9	75	1959	39	2004		0.15	1.84	1979
MASON-CITY (IA5230)	137	80.7	102	1955	66	1961		57.8	77	1959	40	2004		0.14	2.34	1979
ROCK-RAPIDS (IA7147)	131	82.7	99	1947	66	1990		57.8	75	1968	40	2004, 1925		0.09	1.64	1966
CHEROKEE (IA1442)	102	82.5	99	1947	70	1923, 1945		57.6	75	1959	40	1925		0.17	3.48	1979
SWEA CITY 4 W (IA8026)	69	80.5	97	1955	69	1990, 1966, 1964		57.6	74	1959	38	2004		0.22	3.66	1979
MANCHESTER-2 (IA5086)	102	81.2	99	1983	69	1990, 1985		57.6	72	1968, 1959, 1947	38	2004		0.13	2.99	1966
FAYETTE (IA2864)	136	81.2	99	1955, 1947	70	1904, 1951, 1990		57.2	74	1968	38	2004		0.10	2.36	1964
Elkader 6SSW (Osborn) (IA2603)	136	82.7	102	1947	69	1990		57.0	74	1968	37	1950		0.08	2.02	1980
Estherville 4E (IA2724)	135	80.8	98	1947	65	1966		56.9	77	1959	37	2004		0.16	2.40	2017
SIBLEY-5-NNE (IA7664)	145	81.5	95	1955, 1905, 1968, 1901	65	1990		56.8	74	1959	38	1939		0.16	5.22	1979