As of 02:44 PDT

Hillsboro, OR weather in September

61°

Hillsboro, Sunday, 9 August, 02:44

Partly cloudy. Feels like 59°. High 85°, low 57°.

Pressure30.06 inHg

Wind3 mph N

Humidity67%

Visibility6.2 mi

Dew point49°

See detailed hourly forecast

In September, Hillsboro, OR averages a high of 74.5° and a low of 53.5°. About 1.9 inches of precipitation fall over the month (7 wet days). The record high is 101.8° (1988) and the record low 34.5° (1972). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	77.9°	55.4°	18%	95.4° (1988)	45.9° (1973)
2	78.8°	55.4°	13%	101.8° (1988)	44.2° (1960)
3	78.4°	55.8°	18%	96.6° (2017)	45.5° (1964)
4	78.6°	55.2°	17%	100.9° (2017)	47.3° (2015)
5	77.5°	55°	12%	98.6° (2024)	45.3° (1969)
6	77.5°	55°	15%	95.5° (2024)	46.2° (1960)
7	77.2°	55.4°	17%	94.3° (2011)	45° (1992)
8	76.3°	54.7°	22%	91° (2011)	45.9° (1985)
9	76.5°	55°	17%	92.1° (1963)	45.7° (1964)
10	77.2°	55°	17%	95.5° (2011)	44.8° (1964)
11	76.6°	54.5°	18%	96.1° (2011)	45.1° (2012)
12	76.1°	54°	15%	88.9° (1975)	47.1° (1967)
13	76.5°	53.2°	17%	90.7° (1999)	44.1° (1970)
14	75.4°	54.3°	23%	90.5° (1995)	44.2° (1970)
15	74.1°	53.6°	20%	94.6° (1981)	43.9° (1970)
16	72.9°	53.2°	27%	90.5° (2008)	42.6° (2021)
17	71.4°	53.4°	28%	90.1° (1991)	43.7° (1965)
18	71.6°	53.4°	40%	90.9° (1991)	41.5° (1978)
19	71.6°	52.3°	33%	91.8° (1974)	40.8° (1983)
20	71.6°	51.8°	25%	91.2° (2014)	42.3° (1968)
21	73°	52°	17%	90.5° (1974)	42.4° (1993)
22	73°	52.2°	20%	92.1° (1987)	43.9° (1993)
23	72.5°	51.8°	20%	91° (1974)	41.9° (1972)
24	72.9°	51.8°	28%	92.1° (1974)	41.7° (1970)
25	71.6°	52.9°	37%	92.8° (1991)	39° (1972)
26	71.4°	51.8°	25%	88.3° (1967)	39.6° (1972)
27	72.1°	51.4°	17%	91° (2003)	34.5° (1972)
28	72.3°	51.8°	20%	86.7° (2003)	40.8° (1983)
29	71.1°	51.4°	32%	86.2° (1993)	39.7° (2019)
30	70.2°	50.9°	27%	89.6° (1987)	37.9° (1971)