Hillsboro, OR

Sunday 4 October 2026: a high of 83°F in Hillsboro, OR, the warmest 4 October since 2014, 7th warmest of 95.

Sunday 4 October 2026

High: 83°F; Warmest since 2014; 7th warmest of 95
Low: 46°F; Warmest since 2025; 36th warmest of 97

No measurable precipitation in Hillsboro, OR for 9 days to Sunday 4 October 2026.

Every 4 October high in Hillsboro, OR since 1930: 83°F in 2026; the highest is 88°F, in 1952 and 1932.

Normal range, 60.9 to 79.1°F

Every year as a table

Every 4 October low in Hillsboro, OR since 1930: 46°F in 2026; the lowest is 33°F, in 1999 and 1973.

Year	High, °F	Low, °F
2026	83	46
2025	67	53
2024	62	38
2023	70	51
2022	69	48
2021	68	46
2020	71	55
2019	63	46
2018	64	40
2017	72	36
2016	62	51
2015	80	42
2014	85	43
2013	63	36
2012	73	39
2011	64	49
2010	62	39
2009	67	39
2008	62	50
2007	55	39
2006	68	41
2005	60	48
2004	79	42
2003	61	49
2002	64	52
2001	78	40
2000	70	36
1999	70	33
1998	59	43
1997	61	49
1996	70	46
1995	66	41
1994	72	38
1993	82	47
1992	66	41
1991	74	38
1990	67	50
1989	71	36
1988	60	52
1987	71	46
1986	71	46
1985	69	40
1984	74	42
1983	70	50
1982	62	37
1981	63	45
1980	84	44
1979	85	44
1978	77	47
1977	66	38
1976	66	37
1975	68	48
1974	62	38
1973	72	33
1972	71	47
1971	81	44
1970	70	47
1969	68	35
1968	66	51
1967	59	41
1966	82	38
1965	66	40
1964	70	35
1963	59	49
1962	60	39
1961	82	41
1960	74	42
1959	70	46
1958	84	47
1957	53	38
1956	66	49
1955	60	47
1954	68	39
1953	76	42
1952	88	44
1951	66	45
1950	62	47
1949	65	51
1948	60	53
1947	69	50
1946		40
1945	70	37
1944	66	46
1943	72	44
1942	76	42
1941	63	41
1940	64	50
1939	60	50
1938	63	40
1937	62	47
1936	60	55
1935	63	51
1934	68	39
1933	76	44
1932	88	55
1931		36
1930	70	48

The forecast

Date	High	Low
6 October	76°FRecord 91°F, 1952	50°FRecord 31°F, 1931
7 October	Record 89°F, 1987	Record 31°F, 1970

The month and the year

Every year's 1 to 4 October in Hillsboro, OR, ranked by its mean temperature: October 2026 so far is the 6th warmest of 91.

Every year, ranked, as a table

Rank	Year	Mean, °F
1	1952	67.5
2	1958	66.8
3	1932	66.1
4	1988	64.8
5	2022	64.6
6	2026	64.3
7	1993	64
8	2020	63.9
9	1987	63.8
10	1947	63.5
11	1980	62.3
12	1979	62
13	1961	61.4
14	1970	61.3
15	1996	60.9
16	2003	60.5
17	1943	60.4
18	2004	60.3
19	1975	59.5
19	1935	59.5
21	1963	59.1
22	2014	59
22	2008	59
22	1948	59
25	2001	58.9
25	1972	58.9
27	1978	58.8
28	2012	58.5
28	1992	58.5
30	1997	58.3
31	1951	58.1
32	2015	58
33	2025	57.9
33	1944	57.9
35	1933	57.8
36	1984	57.6
37	2023	57.5
38	2010	57.1
39	1965	56.9
40	1938	56.8
41	1990	56.6
41	1956	56.6
43	2024	56.5
44	2011	56.4
44	1966	56.4
44	1959	56.4
47	1955	56.3
48	1995	56.1
48	1971	56.1
50	1985	55.9
51	1983	55.8
51	1974	55.8
53	2018	55.6
54	1945	55.5
54	1936	55.5
54	1930	55.5
57	1967	55.4
58	2021	55.3
59	1994	55
59	1976	55
59	1957	55
59	1953	55
63	2006	54.8
63	1981	54.8
63	1942	54.8
66	1968	54.6
67	2016	54.5
67	1962	54.5
69	1954	54.4
70	1937	54.3
71	1999	54.1
71	1941	54.1
73	1989	54
74	2017	53.9
75	1940	53.6
76	1949	53.5
77	1986	53.4
77	1969	53.4
79	1934	53.3
80	1998	52.8
81	1982	52.5
81	1939	52.5
83	2005	52.4
84	2002	52.3
84	2000	52.3
86	1964	51.8
87	2009	51.3
88	2007	50.6
89	1973	50.3
90	2019	49.6
91	2013	48.9

Every day as a table

Daily highs and lows in Hillsboro, OR, 1 to 4 October 2026, with each date's record range and its 1991 to 2020 normal range.

Day	High, °F	Low, °F	Record high	Year	Record low	Year	Normal high	Normal low
1 October 2026	82	47	89	1987	30	1950	68.5	45
2 October 2026	78	49	92	1987	31	1950	66.5	43
3 October 2026	82	47	88	1958	32	1931	65.5	45
4 October 2026	83	46	88	1952	33	1999	66.5	41.5

The warmest, coldest and wettest on this date

The 20 warmest 4 October highs in Hillsboro, OR since 1930.
Rank	Year	High, °F
1	1952	88
1	1932	88
3	2014	85
3	1979	85
5	1980	84
5	1958	84
7	2026	83
8	1993	82
8	1966	82
8	1961	82
11	1971	81
12	2015	80
13	2004	79
14	2001	78
15	1978	77
16	1953	76
16	1942	76
16	1933	76
19	1991	74
19	1984	74

The 20 coldest 4 October lows in Hillsboro, OR since 1930.
Rank	Year	Low, °F
1	1999	33
1	1973	33
3	1969	35
3	1964	35
5	2017	36
5	2013	36
5	2000	36
5	1989	36
5	1931	36
10	1982	37
10	1976	37
10	1945	37
13	2024	38
13	1994	38
13	1991	38
13	1977	38
13	1974	38
13	1966	38
13	1957	38
20	2012	39

The 20 wettest 4 October days in Hillsboro, OR since 1930.
Rank	Year	Precipitation, in
1	1939	0.78
2	1997	0.63
3	1955	0.59
4	1949	0.49
5	1935	0.48
6	1996	0.42
7	2011	0.39
8	1950	0.33
9	2024	0.32
10	1936	0.29
11	1931	0.20
12	2016	0.19
13	1941	0.15
14	1967	0.14
15	1968	0.13
15	1957	0.13
17	2008	0.12
17	1946	0.12
19	1948	0.10
20	1984	0.09

Every answer in words

Sunday 4 October 2026: a low of 46°F in Hillsboro, OR, the warmest 4 October night since 2025, tied 36th warmest of 97 (with 2021, 2019, 1996 and 4 other years).
Forecast for Tuesday 6 October 2026: a high of 76°F in Hillsboro, OR, which would be the warmest 6 October since 2025, tied 25th warmest of 95 (with 1972 and 1932) (National Weather Service forecast).
Forecast for Tuesday 6 October 2026: a low of 50°F in Hillsboro, OR, which would be the warmest 6 October night since 2023, tied 10th warmest of 97 (with 2016, 2004, 1993 and 3 other years) (National Weather Service forecast).
Hillsboro, OR on 6 October: record high 91°F (1952), record low 31°F (1931).
Hillsboro, OR on 7 October: record high 89°F (1987), record low 31°F (1970).
October 2026 so far averaged 64.3°F in Hillsboro, OR, the warmest 1 to 4 October since 2022, 6th warmest of 91.
October 2026 so far brought 0.00 in of precipitation in Hillsboro, OR, tying the record for the driest 1 to 4 October, set in 2022, 2021, 2020 and 26 other years, in 97 years since 1930; provisional.
Fall 2026 so far averaged 61.3°F in Hillsboro, OR, the warmest 1 September to 4 October since 2025, tied 43rd warmest of 97 (with 2006).
Fall 2026 so far brought 0.83 in of precipitation in Hillsboro, OR, the driest 1 September to 4 October since 2022, 23rd driest of 97.
The 30 days to Sunday 4 October 2026 brought 0.39 in of precipitation in Hillsboro, OR, the driest 30 days to 4 October since 2022, tied 15th driest of 97 (with 1994).
The 60 days to Sunday 4 October 2026 brought 0.83 in of precipitation in Hillsboro, OR, the driest 60 days to 4 October since 2022, 13th driest of 97.
The 90 days to Sunday 4 October 2026 brought 1.07 in of precipitation in Hillsboro, OR, the driest 90 days to 4 October since 2022, 12th driest of 96.

Nearby

Portland Downtown, OR 13.1 mi
Vancouver, WA 15.4 mi
Portland, OR 17.1 mi
McMinnville, OR 25.8 mi
Salem, OR 44.5 mi
Washington County, OR county average
Oregon every city and county

All-time records

About these figures

Daily records for Hillsboro, OR run from 1929 to 4 October 2026, with 378 days missing; current station PORTLAND-HILLSBORO AP.

Our calculation from NOAA records for Hillsboro, OR, 1929 to 2026. Preliminary until NOAA's final data.