Ontario, OR: August

31 August 2026: August 2026 averaged 76.2°F in Ontario, OR, the warmest August since 2024, tied 16th warmest of 68 (with 2024 and 1970).

August 2026

Mean temperature: 76.2°F; Warmest since 2024; 16th warmest of 68
Precipitation: 0.01 in; Driest since 2020; 18th driest of 80

A normal August in Ontario, OR (1991 to 2020): 0.02 in of precipitation, between 0.00 in and 0.47 in in eight years of ten.

The mean temperature of every August in Ontario, OR since 1945: 76.2°F in 2026; the highest is 81.8°F, in 2022.

Every year, ranked, as a table

Every August in Ontario, OR from 1945 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	76.2	16	93	26	59.4	10	0.01	58	0
2025	75.7	21	91	46	60.5	6	0.70	9	0
2024	76.2	16	93	26	59.4	10	0.02	53	0
2023	76.9	10	91.9	39	61.8	2	2.29	2	0
2022	81.8	1	98.2	6	65.4	1	0.30	24	0
2021	75.9	19	91.7	42	60.1	7	0.63	13	0
2020	77.4	7	93.8	20	61	4	0.01	58	0
2019	77.4	7	94.2	17	60.6	5	0.07	42	0
2018	75.3	24	91.9	39	58.8	13	trace	64	1
2017	77.1	9	94.4	16	59.8	8	0.02	53	0
2016	75.1	27	92.1	37	58.1	19	0.01	58	0
2015	75.7	21	93	26	58.5	18	0.02	53	0
2014	74.3	34	90	56	58.6	17	0.53	17	0
2013	78.2	5	94.5	15	61.8	2	trace	64	0
2012	76.7	11	94.6	14	58.7	16	trace	64	0
2011	76.3	15	93.6	22	59	12	trace	64	0
2010	72	56	88.3	66	55.7	44	0.94	6	0
2009	73.7	41	89.5	60	57.8	23	0.63	13	0
2008	74.2	36	91	46	57.4	24	trace	64	0
2007	73.2	44	90.3	52	56.1	38	0.16	34	0
2006	72.2	55	89.7	58	54.7	54	0.07	42	0
2005	74.3	34	92.6	32	56	40	0.03	47	2
2004							0.45	20	4
2003	74.9	31	91.9	39	57.9	21	0.11	37	2
2002	71.7	59	88	67	55.4	48	0.08	40	0
2001	76.5	14	94.1	18	58.8	13	0.01	58	0
2000	75.2	25	92.6	32	57.9	21	0.02	53	0
1999	72.4	52	88.5	63	56.3	35	trace	64	0
1998	75.9	19	92.9	29	58.8	13	trace	64	0
1997	73.1	46	90.2	54	56.1	38			2
1996			92.6	32			0.00	77	6
1995			88.5	63			0.13	35	6
1994			95.3	12			0.00	77	5
1993					49.4	77	0.27	27	4
1992					56	40	trace	64	7
1991					57.2	26	0.02	53	7
1990					57	29	0.64	12	5
1989					54	58	1.19	5	5
1988					53.6	60	trace	64	7
1987					52.2	67	0.00	77	5
1986					56.7	31	0.05	45	5
1985					51	74	0.20	30	5
1984	75	28	93.8	20	56.3	35	0.56	16	0
1983	74.6	32	92	38	57.1	27	0.67	10	2
1982	74	38	92.9	29	55.4	48	0.23	29	1
1981	76.6	13	96.9	9	56.3	35	0.08	40	0
1980	71.3	61	89.3	61	53.4	61	trace	64	0
1979	73.8	40	90.3	52	57.3	25	1.60	3	0
1978	70.8	62	90.5	50	51.1	72	0.18	33	0
1977	75	28	93.4	24	56.6	32	0.52	18	0
1976	68	68	85.3	70	50.8	75	0.83	7	0
1975	69.8	66	87.5	68	52.1	68	0.46	19	0
1974	73.1	46	93.5	23	52.6	65	0.03	47	0
1973	75.2	25	95.8	11	54.5	56	0.03	47	0
1972	76.7	11	97.6	7	55.7	44	0.60	15	0
1971	80	2	101.9	2	58.1	19	0.05	45	0
1970	76.2	16	99.7	3	52.7	64	0.03	47	0
1969	74.6	32	97.4	8	51.9	69	0.00	77	0
1968	70	65	86.2	69	53.7	59	2.58	1	0
1967	79.5	4	102.4	1	56.6	32	trace	64	0
1966	75.7	21	96.8	10	54.6	55	0.29	25	0
1965	72.6	51	90.2	54	55	52	1.29	4	0
1964	70.8	62	90.4	51	51.1	72	0.45	20	0
1963	75	28	94.7	13	55.3	50	0.19	31	0
1962	72.7	50	92.5	35	52.8	63	0.19	31	0
1961	79.6	3	99.5	4	59.7	9	0.24	28	0
1960	70.5	64	91.2	45	49.8	76	0.67	10	0
1959	73.5	42	92.9	29	54.1	57	0.35	23	0
1958	77.8	6	98.8	5	56.8	30	0.13	35	0
1957	72.8	49	93.9	19	51.7	70	0.01	58	0
1956	72.3	54	93.2	25	51.4	71	0.83	7	0
1954	68.9	67	84.8	71	53	62	0.41	22	0
1953	73	48	89.7	58	56.4	34	0.11	37	0
1952	73.4	43	90.9	48	55.8	43	trace	64	0
1951	72	56	88.6	62	55.5	47	0.28	26	0
1950	73.2	44	90.6	49	55.7	44	0.03	47	0
1949	74.2	36	91.3	43	57.1	27	0.01	58	0
1948	71.7	59	88.4	65	55	52	0.11	37	0
1947	72.4	52	89.8	57	55.1	51	0.03	47	0
1946	74	38	92.2	36	55.9	42	trace	64	0
1945	71.9	58	91.3	43	52.4	66	0.06	44	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2022	81.8
1971	80
1961	79.6
1967	79.5
2013	78.2
1958	77.8
2020	77.4
2019	77.4
2017	77.1
2023	76.9

Coldest
Year	Mean, °F
1976	68
1954	68.9
1975	69.8
1968	70
1960	70.5
1978	70.8
1964	70.8
1980	71.3
2002	71.7
1948	71.7

Wettest
Year	Precipitation, in
1968	2.58
2023	2.29
1979	1.60
1965	1.29
1989	1.19
2010	0.94
1976	0.83
1956	0.83
2025	0.70
1983	0.67
More years share the last value

Driest
Year	Precipitation, in
1996	0.00
1994	0.00
1987	0.00
1969	0.00
2018	trace
2013	trace
2012	trace
2011	trace
2008	trace
1999	trace
More years share the last value

The hottest, coldest and wettest days

Hottest day: 99°F; 25 August 2026, 21 August 2026, 8 August 2026, 6 August 2026, 1 August 2026
Coldest night: 41°F; 31 August 2026
Wettest day: 0.01 in; 14 August 2026

Every month, season and year

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Ontario, OR the day's answers

All-time records

Every answer in words

August 2026 brought 0.01 in of precipitation in Ontario, OR, the driest August since 2020, tied 18th driest of 80 (with 2020, 2016, 2001 and 2 other years).
The hottest day of August 2026 in Ontario, OR: 99°F on Tuesday 25 August 2026, Friday 21 August 2026, Saturday 8 August 2026 and 2 other days.
The coldest night of August 2026 in Ontario, OR: a low of 41°F on Monday 31 August 2026.
The wettest day of August 2026 in Ontario, OR: 0.01 in on Friday 14 August 2026.