Waterloo, IA: 2026

9 October 2026: 2026 so far averaged 54.1°F in Waterloo, IA, the warmest 1 January to 9 October since 2025, tied 12th warmest of 131 (with 1925).

2026 so far, to 9 October 2026

Mean temperature: 54.1°F; Warmest since 2025; 12th warmest of 131
Precipitation: 40.79 in; Wettest since 2018; 6th wettest of 131

A normal 1 January to 9 October in Waterloo, IA (1991 to 2020): a mean temperature of 51.7°F, between 49.7°F and 53.6°F in eight years of ten and 28.96 in of precipitation, between 23.28 in and 39.47 in in eight years of ten.

The mean temperature of every 1 January to 9 October in Waterloo, IA since 1895: 54.1°F in 2026; the highest is 56.3°F, in 1921.

Normal range, 49.7 to 53.6°F

Every year, ranked, as a table

Every 1 January to 9 October in Waterloo, IA from 1895 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank	Days missing
2026	54.1	12	64.7	17	43.5	8	40.79	6	0
2025	54.2	10	65.5	12	42.8	16	31.86	38	0
2024	55.9	3	67.5	4	44.3	4	34.10	24	0
2023	54.8	5	66.7	7	43	14	18.23	127	0
2022	51.6	63	62.6	60	40.6	66	28.73	58	0
2021	53.6	17	64.7	17	42.6	21	19.33	124	0
2020	53.6	17	64.2	28	43	14	30.40	48	0
2019	51.2	73	61.5	82	40.8	56	37.36	11	0
2018	50.7	87	61.1	94	40.4	73	48.76	2	0
2017	53.6	17	64.4	23	42.8	16	26.02	85	0
2016	53.4	21	63.4	47	43.5	8	36.00	19	0
2015	51.1	76	61.8	74	40.3	74	27.83	65	0
2014	47.7	126	58.6	122	36.8	127	29.65	52	0
2013	50.9	80	61.2	90	40.5	69	36.70	13	0
2012	55.8	4	68	2	43.7	6	17.54	128	0
2011	51	77	61.4	85	40.6	66	24.55	96	0
2010	51.8	57	62.2	69	41.5	40	39.18	9	0
2009	49.7	105	60.3	109	39.1	103	31.93	36	0
2008	49.1	116	59.4	118	38.8	109	41.08	5	0
2007	52.4	40	62.8	54	42	32	39.29	8	0
2006	53.4	21	64.2	28	42.5	23	26.96	74	0
2005	52.9	34	63.7	38	42.1	29	27.88	64	0
2004	51.2	73	62.4	63	40.1	79	24.83	93	0
2003	51.6	63	63.8	35	39.4	93	21.98	111	0
2002	53.7	15	64.9	16	42.5	23	26.11	84	0
2001	50.6	89	60.7	102	40.5	69	28.26	61	0
2000	53.3	26	64.4	23	42.2	28	27.23	72	0
1999	52.6	36	62.9	52	42.3	27	36.79	12	0
1998	53.9	14	63.4	47	44.4	2	36.43	14	0
1997	50.3	97	60.8	101	39.8	86	26.98	73	0
1996	49.3	112	60.2	110	38.5	115	22.73	107	0
1995	52	53	62.4	63	41.6	38	26.55	78	0
1994	50	103	61.1	94	38.9	108	30.38	49	0
1993	50.2	99	59.4	118	40.9	52	51.00	1	0
1992	51.7	61	62.3	66	41.1	48	23.34	103	0
1991	52.3	45	62.8	54	41.7	37	34.71	21	0
1990	53.3	26	63.8	35	42.8	16	38.33	10	0
1989	50.6	89	61.9	72	39.2	97	16.38	129	0
1988	52.1	52	64.7	17	39.4	93	15.25	131	0
1987	54.6	8	65.6	11	43.6	7	26.83	76	0
1986	51.7	61	61.8	74	41.5	40	32.06	35	0
1985	50.9	80	61.5	82	40.3	74	24.54	97	0
1984	50.4	94	60.7	102	40	82	26.12	83	0
1983	53.1	31	62.8	54	43.4	11	28.00	63	0
1982	48.5	122	58.5	124	38.6	114	26.39	80	0
1981	51.6	63	62.8	54	40.5	69	25.50	90	0
1980	50.8	83	61.7	78	39.9	84	29.25	54	0
1979	47.8	125	57.9	130	37.8	120	32.53	31	0
1978	47.7	126	58.3	127	37.1	126	30.72	44	0
1977	50.1	101	61.4	85	38.8	109	28.36	59	0
1976	51.4	67	63.9	32	39	104	20.49	118	0
1975	49.7	105	59.8	113	39.5	92	19.97	120	0
1974	49.6	108	59.9	111	39.3	95	24.39	99	0
1973	52.4	40	61.6	80	43.1	12	32.64	29	0
1972	47.9	124	58.3	127	37.4	124	28.80	57	0
1971	47.3	129	58.1	129	36.5	129	22.51	109	0
1970	48.8	119	59.5	117	38.1	118	26.55	78	0
1969	48.8	119	58.9	121	38.7	112	29.97	51	0
1968	50.2	99	61.2	90	39.2	97	40.73	7	0
1967	48.7	121	59.9	111	37.5	123	25.66	87	0
1966	49.4	110	60.9	99	38	119	36.17	18	0
1965	47	131	57.2	131	36.8	127	43.78	4	0
1964	51.3	68	62.9	52	39.7	90	32.71	27	0
1963	50.5	93	61.7	78	39.2	97	28.83	55	0
1962	48.9	118	58.6	122	39.2	97	30.81	43	0
1961	50.4	94	60.7	102	40.1	79	36.42	15	0
1960	49.2	115	59.8	113	38.7	112	31.91	37	0
1959	50.8	83	61	98	40.5	69	32.67	28	0
1958	49.8	104	60.4	108	39.2	97	22.70	108	0
1957	50.9	80	61.1	94	40.8	56	21.64	114	0
1956	50.1	101	61.4	85	38.8	109	19.49	122	0
1955	53.3	26	64.5	22	42.1	29	19.40	123	0
1954	53.4	21	64	30	42.7	19	28.03	62	3
1953	52.4	40	63.6	41	41.3	43	22.19	110	2
1952	52.6	36	63.7	38	41.6	38	21.88	113	3
1951	49	117	58.5	124	39.2	97	35.19	20	20
1950									31
1949	51.6	63	62.3	66	40.8	56	19.70	121	0
1948	51.8	57	62.7	59	40.9	52	27.58	68	0
1947	51.3	68	61.3	89	41.3	43	33.54	25	0
1946	53	32	63.8	35	42.1	29	32.19	34	0
1945	51.2	73	61.4	85	41.1	48	30.49	46	0
1944	52.4	40	62.4	63	42.4	25	32.34	33	0
1943	50.8	83	61.6	80	40.1	79	26.74	77	0
1942	52.2	48	62.6	60	41.8	34	36.33	17	0
1941	53.7	15	64	30	43.5	8	29.51	53	0
1940	50.6	89	61.2	90	39.9	84	30.33	50	0
1939	54.2	10	65.9	10	42.6	21	19.06	125	0
1938	54.5	9	65	15	43.9	5	34.51	22	0
1937	51.3	68	62.3	66	40.3	74	24.81	94	0
1936	51.3	68	63	51	39.6	91	26.38	81	0
1935	52	53	62.1	71	41.9	33	25.28	91	0
1934	54.7	6	66.8	6	42.7	19	23.05	104	0
1933	54.7	6	66.2	9	43.1	12	23.63	101	0
1932	52.4	40	63.6	41	41.3	43	28.34	60	0
1931	56.2	2	68	2	44.4	2	23.40	102	0
1930	53.2	29	65.4	13	40.9	52	25.63	88	0
1929	49.3	112	60.7	102	37.8	120	21.63	115	0
1928	52.2	48	63.6	41	40.8	56	31.13	42	0
1927	52.5	38	63.5	44	41.5	40	27.33	71	0
1926	52.5	38	63.7	38	41.3	43	25.61	89	0
1925	54.1	12	67	5	41.2	47	22.80	106	0
1924	49.4	110	60.7	102	38.2	116	33.45	26	0
1923	51.8	57	63.5	44	40	82	31.15	41	0
1922	53.2	29	65.2	14	41.1	48	26.93	75	0
1921	56.3	1	68.1	1	44.5	1	27.46	70	0
1920	50.6	89	61.8	74	39.3	95	26.13	82	0
1919	53.6	17	64.7	17	42.4	25	31.24	40	0
1918	49.7	105	61.8	74	37.7	122	27.56	69	0
1917	47.3	129	59	120	35.6	131	24.72	95	0
1916	50.8	83	62.5	62	39	104	18.96	126	0
1915	49.3	112	59.6	116	39	104	36.34	16	0
1914	52.3	45	63.9	32	40.7	63	32.53	31	0
1913	51.8	57	62.8	54	40.8	56	24.46	98	0
1912	47.4	128	58.4	126	35.9	130	27.77	66	3
1911	53.4	21	64.4	23	41.8	34	30.51	45	6
1910	52.2	48	64.6	21	39.8	86	16.09	130	0
1909	51.3	68	61.9	72	40.6	66	25.97	86	0
1908	53	32	64.3	27	41.8	34	27.66	67	0
1907	50.7	87	61.1	94	40.2	78	28.82	56	0
1906	51.9	56	63.1	50	40.7	63	21.25	116	0
1905	50.3	97	61.5	82	39	104	30.48	47	0
1904	48.5	122	59.7	115	37.3	125	21.97	112	0
1903	51	77	61.2	90	40.7	63	34.14	23	0
1902	50.4	94	60.9	99	39.8	86	44.86	3	0
1901	52.7	35	64.4	23	40.9	52	20.14	119	0
1900	52.2	48	63.5	44	41	51	31.62	39	0
1899	49.5	109	60.7	102	38.2	116	25.12	92	0
1898	52.3	45	63.9	32	40.8	56	22.90	105	0
1897	51	77	62.2	69	39.8	86	23.88	100	0
1896	52	53	63.2	49	40.8	56	32.54	30	0
1895	53.4	21	66.4	8	40.3	74	20.95	117	20

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1921	56.3
1931	56.2
2024	55.9
2012	55.8
2023	54.8
1934	54.7
1933	54.7
1987	54.6
1938	54.5
2025	54.2
More years share the last value

Coldest
Year	Mean, °F
1965	47
1971	47.3
1917	47.3
1912	47.4
2014	47.7
1978	47.7
1979	47.8
1972	47.9
1982	48.5
1904	48.5

Wettest
Year	Precipitation, in
1993	51.00
2018	48.76
1902	44.86
1965	43.78
2008	41.08
2026	40.79
1968	40.73
2007	39.29
2010	39.18
1990	38.33

Driest
Year	Precipitation, in
1988	15.25
1910	16.09
1989	16.38
2012	17.54
2023	18.23
1916	18.96
1939	19.06
2021	19.33
1955	19.40
1956	19.49

The hottest, coldest and wettest days

Hottest day: 96°F; 26 July 2026
Coldest night: -18°F; 23 January 2026
Wettest day: 2.91 in; 1 October 2026

Month by month

Month	Mean temperature	Precipitation
January	16.2°F 48th coldest of 130	1.61 in 21st wettest of 131
February	28.2°F 22nd warmest of 132	0.79 in 55th driest of 132
March	41.9°F 9th warmest of 131	2.20 in 52nd wettest of 131
April	51.9°F 18th warmest of 131	5.80 in 8th wettest of 132
May	60.9°F 45th warmest of 132	2.76 in 38th driest of 132
June	70.1°F 56th warmest of 131	5.91 in 38th wettest of 131
July	75.8°F 27th warmest of 132	7.11 in 19th wettest of 132
August	71.7°F 53rd warmest of 132	3.60 in 57th wettest of 132
September	67°F 17th warmest of 132	8.06 in 10th wettest of 132
October so far	60.4°F 28th warmest of 130	2.95 in 6th wettest of 131

Hot days and freezes

Waterloo, IA has had 12 days at 90°F or above in 2026 through 9 October, the most by that date since 2025, tied 98th most of 131 (with 1997, 1990 and 1944).
Waterloo, IA has had 84 freezing nights (a low of 32°F or below) in 2026 through 9 October, the most by that date since 2025, tied 118th most of 131 (with 2000).
The last freeze of spring 2026 in Waterloo, IA came on Monday 11 May 2026, the latest since 2020, tied 31st latest of 130 (with 1990 and 1946).

Daily records set

Date	Record	Value	Before	Check
30 March	Warmest day	86°F	84°F 1967	Provisional
21 March	Warmest day	87°F	83°F 1938	Provisional
16 February	Warmest day	66°F	62°F 1981	Provisional

Daily records set and not listed: 0

Every month, season and year

Months

Seasons

Years

2025
2026

Waterloo, IA the day's answers

All-time records

Every answer in words

2026 so far brought 40.79 in of precipitation in Waterloo, IA, the wettest 1 January to 9 October since 2018, 6th wettest of 131.
The hottest day of 2026 so far in Waterloo, IA: 96°F on Sunday 26 July 2026.
The coldest night of 2026 so far in Waterloo, IA: a low of -18°F on Friday 23 January 2026.
The wettest day of 2026 so far in Waterloo, IA: 2.91 in on Thursday 1 October 2026.