As of 04:18 PDT

Dayton, WA weather in September

47°

Dayton, Wednesday, 7 October, 04:18

Clear. Feels like 47°. High 80°, low 47°.

Pressure30.06 inHg

Wind2.2 mph SE

Humidity67%

Visibility6.2 mi

Dew point36°

See detailed hourly forecast

In September, Dayton, WA averages a high of 75.1° and a low of 54.1°. About 1.0 inches of precipitation fall over the month (5 wet days). The record high is 99.9° (2022) and the record low 31.8° (1965). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	80.4°	58.5°	12%	96.3° (1987)	44.2° (1999)
2	79.9°	58.3°	10%	99.9° (2022)	47.1° (2008)
3	80.4°	57.9°	12%	99° (1988)	44.2° (2000)
4	80.4°	57.9°	12%	97.3° (1988)	47.1° (1971)
5	80.1°	58.1°	10%	94.8° (2025)	45.3° (1969)
6	79°	57.6°	17%	96.1° (2024)	44.6° (1960)
7	78.8°	56.7°	10%	99° (2024)	43.3° (1992)
8	77.9°	56.8°	18%	94.5° (2011)	44.2° (1976)
9	77.5°	56.3°	12%	91.8° (1963)	42.1° (1970)
10	76.8°	55.4°	17%	92.5° (1990)	44.8° (1972)
11	76.5°	55.6°	8%	92.5° (2011)	44.4° (1970)
12	76.3°	55.2°	8%	90.3° (2009)	42.4° (1970)
13	75.9°	54°	15%	89.8° (2020)	38.3° (1970)
14	76.1°	54°	15%	92.3° (2013)	36.9° (1970)
15	75°	54.3°	17%	93.4° (2013)	37.9° (1970)
16	74.1°	54°	22%	92.3° (1981)	37.9° (1965)
17	73.8°	53.8°	23%	94.8° (1981)	31.8° (1965)
18	72.7°	53.8°	27%	90.1° (1981)	35.2° (1965)
19	71.6°	53.1°	22%	85.6° (1994)	36.9° (1983)
20	71.1°	51.4°	25%	87.6° (2012)	37.4° (1983)
21	70.9°	50.7°	18%	92.5° (1967)	38.8° (1983)
22	72.3°	50.7°	13%	90.3° (1966)	39.2° (1993)
23	72.5°	51.6°	15%	91.4° (2001)	32.9° (2000)
24	73°	51.3°	15%	92.7° (2011)	35.2° (1984)
25	72.9°	52.3°	17%	89.8° (1997)	34.9° (1970)
26	72.1°	51.8°	23%	85.5° (1963)	38.7° (1972)
27	71.8°	50.7°	12%	89.2° (1963)	33.4° (1972)
28	72°	50.5°	17%	91.4° (1963)	35.6° (1984)
29	72°	51.1°	17%	86.2° (1992)	34.9° (1985)
30	70.5°	51.1°	15%	86.9° (1992)	34.9° (2019)