Waterloo, IA: June

30 June 2026: June 2026 averaged 70.1°F in Waterloo, IA, the warmest June since 2025, tied 56th warmest of 131 (with 1986, 1984 and 1978).

June 2026

Mean temperature: 70.1°F; Warmest since 2025; 56th warmest of 131
Precipitation: 5.91 in; Wettest since 2025; 38th wettest of 131

A normal June in Waterloo, IA (1991 to 2020): a mean temperature of 70.1°F, between 68.3°F and 72.4°F in eight years of ten and 5.23 in of precipitation, between 2.67 in and 9.36 in in eight years of ten.

The mean temperature of every June in Waterloo, IA since 1895: 70.1°F in 2026; the highest is 78.4°F, in 1934.

Normal range, 68.3 to 72.4°F

Every year, ranked, as a table

Every June 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	70.1	56	80.6	72	59.6	43	5.91	38	0
2025	72.9	14	83.6	25	62.1	12	6.54	29	0
2024	73.3	9	84.3	19	62.3	11	7.24	22	0
2023	72.5	17	86	8	59	56	2.20	113	0
2022	72	25	84	20	60	36	6.00	35	0
2021	75.5	4	88.3	3	62.6	9	0.87	127	0
2020	74.1	6	84.7	15	63.5	4	9.34	5	0
2019	70.2	53	81.1	58	59.3	51	6.15	32	0
2018	72.4	18	82.9	34	61.8	14	9.53	4	0
2017	71	41	83.6	25	58.4	68	5.75	40	0
2016	71.9	26	83.4	29	60.5	29	8.97	6	0
2015	69.4	71	79.7	87	59	56	5.47	44	0
2014	70.2	53	80.6	72	59.7	41	9.63	3	0
2013	69.1	77	78.5	102	59.6	43	4.68	65	0
2012	71.7	32	83.8	24	59.6	43	2.53	109	0
2011	70	60	80.1	79	59.9	38	3.89	84	0
2010	70.2	53	80.1	79	60.4	31	7.95	15	0
2009	68.8	86	79.4	91	58.3	71	3.58	87	0
2008	69.5	68	80.2	77	58.9	59	8.79	7	0
2007	69.9	63	80.8	64	59	56	5.11	50	0
2006	68.9	84	80.8	64	57.1	91	3.07	95	0
2005	72.4	18	83.5	27	61.4	19	8.02	13	0
2004	67.3	104	78.2	108	56.4	98	2.68	103	0
2003	69.4	71	81.4	52	57.4	82	4.45	69	0
2002	72.7	16	83.5	27	61.9	13	2.99	99	0
2001	68.4	94	78.9	96	57.8	77	3.91	83	0
2000	67.9	98	78.6	101	57.2	87	7.06	23	0
1999	69.9	63	79.8	86	60.1	35	4.27	76	0
1998	67.6	100	76.5	119	58.7	62	8.77	8	0
1997	70.7	45	82.6	37	58.7	62	5.92	36	0
1996	70.7	45	80.2	77	61.1	22	4.42	70	0
1995	71.4	36	82	45	60.7	26	4.99	58	0
1994	71.8	29	83.1	32	60.5	29	5.35	47	0
1993	68.5	90	78.5	102	58.5	65	10.11	2	0
1992	68.3	95	81	60	55.6	107	1.93	117	0
1991	74	7	84.7	15	63.4	5	2.18	114	0
1990	69.7	65	80	83	59.5	48	7.98	14	0
1989	68.6	89	81.5	50	55.8	104	1.40	125	0
1988	73	13	87.5	5	58.5	65	3.12	93	0
1987	73.3	9	85.4	11	61.2	21	2.66	104	0
1986	70.1	56	80.5	74	59.7	41	7.40	21	0
1985	66.3	112	77.9	111	54.7	114	2.72	102	0
1984	70.1	56	80.8	64	59.4	49	4.87	61	0
1983	69.7	65	81.1	58	58.3	71	5.31	48	0
1982	64	127	75.5	124	52.5	128	3.25	91	0
1981	68.5	90	79.6	88	57.3	85	5.23	49	0
1980	69	80	80.4	75	57.5	80	8.63	9	0
1979	69.3	74	80.1	79	58.4	68	6.07	34	0
1978	70.1	56	81.4	52	58.8	60	5.70	41	0
1977	68.9	84	81.2	55	56.6	96	4.11	77	0
1976	68.7	88	81.4	52	56.1	100	2.83	101	0
1975	71	41	80.8	64	61.1	22	4.00	80	0
1974	66.5	111	78.1	109	54.9	113	3.72	86	0
1973	71.3	37	82.7	36	59.8	40	3.07	95	0
1972	67.1	106	78.9	96	55.4	109	4.33	72	0
1971	71.6	34	82.3	38	60.8	25	3.14	92	0
1970	69.5	68	80.9	63	58.2	74	2.16	115	0
1969	61.9	131	72.4	131	51.4	131	4.82	63	0
1968	69.1	77	81	60	57.2	87	4.66	67	0
1967	67.3	104	77.6	115	57	92	5.52	43	0
1966	70.7	45	81.5	50	59.9	38	8.34	12	0
1965	66.2	114	77.8	113	54.5	120	5.09	51	0
1964	69	80	81.2	55	56.9	93	4.01	79	0
1963	72.3	22	85.2	14	59.3	51	4.52	68	0
1962	69.6	67	79.9	85	59.2	54	2.91	100	0
1961	69.2	75	81.6	47	56.9	93	2.59	107	0
1960	66.2	114	77.8	113	54.6	116	2.29	111	0
1959	70.8	44	82.1	43	59.4	49	7.94	16	0
1958	64.4	126	74.9	125	54	122	3.35	90	0
1957	67.9	98	78.4	106	57.4	82	4.03	78	0
1956	74	7	86.3	7	61.7	15	2.07	116	0
1955	67.1	106	78.5	102	55.7	105	0.86	128	0
1954	72.9	14	83.1	32	62.7	8	5.04	55	0
1953	72.1	23	84.7	15	60	36	4.87	61	2
1952	73.3	9	85.7	9	60.9	24	3.95	82	0
1951	65.9	117	75.7	122	55.4	109	4.67	66	3
1949	71.8	29	82.1	43	61.5	16	4.92	60	0
1948	67.6	100	77.9	111	57.2	87	6.98	25	0
1947	65.5	119	74.6	127	56.3	99	12.43	1	0
1946	69	80	79.4	91	58.5	65	8.56	10	0
1945	63.9	128	73.3	130	54.6	116	3.03	97	0
1944	71.2	39	80.8	64	61.5	16	5.09	51	0
1943	72.1	23	81	60	63.1	7	5.77	39	0
1942	68.8	86	79.1	94	58.4	68	7.89	17	0
1941	70.5	49	80.3	76	60.7	26	4.38	71	0
1940	72.4	18	84.6	18	60.3	33	2.57	108	0
1939	71.5	35	81.6	47	61.5	16	3.39	89	0
1938	68.5	90	79.2	93	57.8	77	5.06	54	0
1937	68.5	90	79.5	89	57.5	80	6.75	28	0
1936	69.4	71	82.2	40	56.6	96	5.44	46	0
1935	65.6	118	75.9	121	55.3	111	7.46	20	0
1934	78.4	1	92.9	1	63.9	2	2.40	110	0
1933	78	2	92.1	2	64	1	0.79	129	0
1932	72.4	18	83.4	29	61.4	19	3.99	81	0
1931	76	3	88.3	3	63.6	3	1.50	123	0
1930	69.5	68	80.8	64	58.1	75	5.07	53	0
1929	67.4	103	80	83	54.7	114	1.00	126	0
1928	65.4	120	77	117	53.8	124	5.02	56	0
1927	66.2	114	78.4	106	54	122	0.61	131	0
1926	65.3	122	79	95	51.6	130	1.80	120	0
1925	70	60	82.2	40	57.7	79	6.99	24	0
1924	67	108	78.5	102	55.6	107	6.11	33	0
1923	71.9	26	83.4	29	60.4	31	4.79	64	0
1922	71.9	26	85.4	11	58.3	71	0.66	130	0
1921	75.1	5	87	6	63.3	6	5.01	57	0
1920	71.1	40	82.8	35	59.3	51	4.93	59	0
1919	71.7	32	80.8	64	62.5	10	5.92	36	0
1918	68.3	95	78.7	100	57.9	76	7.88	18	0
1917	65.2	123	76	120	54.3	121	8.36	11	0
1916	64.5	125	75.7	122	53.2	125	3.08	94	0
1915	63.8	129	74.5	128	53.1	127	3.75	85	0
1914	70.3	52	81.9	46	58.6	64	7.70	19	0
1913	71	41	82.3	38	59.6	43	1.61	122	0
1912	65.4	120	77.6	115	53.2	125	2.60	105	0
1911	73.1	12	85.6	10	60.6	28	3.02	98	0
1910	70	60	84	20	56	101	1.84	119	0
1909	69.2	75	79.5	89	58.8	60	6.21	31	0
1908	67.6	100	78	110	57.2	87	4.29	75	0
1907	66.3	112	76.8	118	55.7	105	6.41	30	0
1906	68	97	80.1	79	55.9	102	1.64	121	0
1905	69	80	80.7	71	57.3	85	5.53	42	0
1904	66.8	109	78.9	96	54.6	116	1.43	124	0
1903	63.3	130	74.7	126	51.8	129	1.93	117	0
1902	64.6	124	74	129	55.1	112	6.81	27	0
1901	71.8	29	84	20	59.6	43	3.48	88	0
1900	69.1	77	82.2	40	55.9	102	5.47	44	0
1899	70.4	50	81.6	47	59.2	54	6.94	26	0
1898	70.7	45	81.2	55	60.2	34	4.31	74	0
1897	66.7	110	78.9	96	54.6	116	4.32	73	0
1896	70.4	50	84	20	56.9	93	2.60	105	0
1895	71.3	37	85.3	13	57.4	82	2.22	112	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1934	78.4
1933	78
1931	76
2021	75.5
1921	75.1
2020	74.1
1991	74
1956	74
2024	73.3
1987	73.3
More years share the last value

Coldest
Year	Mean, °F
1969	61.9
1903	63.3
1915	63.8
1945	63.9
1982	64
1958	64.4
1916	64.5
1902	64.6
1917	65.2
1926	65.3

Wettest
Year	Precipitation, in
1947	12.43
1993	10.11
2014	9.63
2018	9.53
2020	9.34
2016	8.97
2008	8.79
1998	8.77
1980	8.63
1946	8.56

Driest
Year	Precipitation, in
1927	0.61
1922	0.66
1933	0.79
1955	0.86
2021	0.87
1929	1.00
1989	1.40
1904	1.43
1931	1.50
1913	1.61

The hottest, coldest and wettest days

Hottest day: 92°F; 29 June 2026
Coldest night: 46°F; 15 June 2026
Wettest day: 1.96 in; 11 June 2026

Every month, season and year

Months

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Waterloo, IA the day's answers

All-time records

Every answer in words

June 2026 brought 5.91 in of precipitation in Waterloo, IA, the wettest June since 2025, 38th wettest of 131.
The hottest day of June 2026 in Waterloo, IA: 92°F on Monday 29 June 2026.
The coldest night of June 2026 in Waterloo, IA: a low of 46°F on Monday 15 June 2026.
The wettest day of June 2026 in Waterloo, IA: 1.96 in on Thursday 11 June 2026.