As of 13:47 PDT

Bryn Mawr, WA weather in September

77°

Bryn Mawr, Sunday, 9 August, 13:47

Overcast. Feels like 77°. High 77°, low 56°.

Pressure30.00 inHg

Wind1 mph SE

Humidity50%

Visibility6.2 mi

Dew point57°

See detailed hourly forecast

In September, Bryn Mawr, WA averages a high of 69.3° and a low of 52.4°. About 2.9 inches of precipitation fall over the month (9 wet days). The record high is 94.8° (1988) and the record low 33.3° (1972). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	72.3°	54.9°	27%	89.1° (1987)	43.5° (1973)
2	72.9°	54.7°	30%	94.8° (1988)	44.8° (1960)
3	72.9°	54.7°	25%	93° (1988)	44.1° (1975)
4	72.7°	54.3°	22%	86.4° (2003)	45.7° (1965)
5	72°	54.9°	32%	92.5° (2017)	46° (2000)
6	71.8°	54.1°	28%	88.3° (2017)	44.4° (1960)
7	71.8°	54.1°	30%	89.6° (1981)	42.6° (1960)
8	71.2°	54.1°	30%	84.2° (2011)	43.9° (1976)
9	71.1°	53.8°	25%	88.2° (1963)	41° (1970)
10	71.2°	53.8°	30%	90.9° (2022)	44.2° (1964)
11	70.9°	52.7°	25%	86.2° (2011)	43.7° (1964)
12	70.3°	52.3°	22%	81.7° (1989)	43.3° (1970)
13	71.1°	51.8°	20%	84° (1999)	41.5° (1970)
14	70.5°	52.9°	23%	86.5° (1979)	41.4° (1971)
15	69.6°	52.7°	33%	87.3° (1981)	42.1° (1971)
16	68.9°	52.5°	40%	86.7° (2025)	39.9° (1965)
17	67.1°	52.7°	40%	82.2° (1991)	42.3° (1965)
18	66.9°	52.3°	42%	82° (1991)	42.1° (1965)
19	66.7°	51.8°	40%	83.5° (1999)	37.9° (1983)
20	66.7°	51.3°	43%	85.1° (1974)	39.4° (1983)
21	68.2°	50.2°	23%	86° (1974)	40.8° (1968)
22	68.2°	50.4°	32%	86.5° (1990)	42.3° (1961)
23	67.5°	51.1°	33%	82° (1989)	39.6° (2000)
24	67.6°	50.4°	32%	84.9° (1974)	36.9° (1970)
25	66.9°	51.4°	33%	85.8° (1991)	37.6° (1972)
26	66.7°	50.7°	35%	80.8° (2022)	39.9° (1972)
27	67.1°	50.2°	25%	84.7° (1967)	33.3° (1972)
28	66.9°	50°	27%	80.1° (2017)	39.4° (1999)
29	66.4°	50.4°	33%	80.2° (1992)	38.3° (1983)
30	65.3°	50.2°	33%	80.1° (1987)	38.5° (1971)