As of 05:11 PDT

Riverton, WA weather in September

53°

Riverton, Wednesday, 7 October, 05:11

Overcast. Feels like 52°. High 70°, low 52°.

Pressure30.12 inHg

Wind8.1 mph NE

Humidity95%

Visibility0.2 mi

Dew point51°

See detailed hourly forecast

In September, Riverton, WA averages a high of 68.7° and a low of 52.3°. About 2.8 inches of precipitation fall over the month (9 wet days). The record high is 92.8° (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	71.8°	54.9°	27%	88.3° (1987)	43.9° (1973)
2	72.3°	54.3°	30%	92.8° (1988)	45.3° (1960)
3	72.3°	54.5°	23%	91.8° (1988)	44.2° (1975)
4	72°	54.3°	20%	85.1° (2003)	45.5° (1965)
5	71.4°	54.7°	30%	92.8° (2017)	46.4° (2000)
6	71.1°	54.1°	27%	89.6° (2017)	44.6° (1960)
7	71.1°	54°	32%	88.2° (1981)	42.4° (1960)
8	70.7°	54.1°	30%	82.9° (2011)	44.1° (1976)
9	70.3°	53.6°	23%	87.1° (1963)	40.6° (1970)
10	70.7°	53.6°	28%	88.3° (2020)	43.9° (1964)
11	70.3°	52.5°	23%	84.4° (2011)	42.8° (1964)
12	69.8°	52.2°	18%	81° (1989)	43.7° (1970)
13	70.3°	51.8°	20%	82.6° (1999)	44.6° (1984)
14	70°	52.7°	25%	84.6° (1979)	41.4° (1971)
15	68.9°	52.5°	32%	85.6° (1981)	42.1° (1971)
16	68.4°	52.5°	38%	89.2° (2025)	40.6° (1965)
17	66.6°	52.5°	40%	80.4° (1991)	41.2° (1965)
18	66.4°	52.3°	38%	81° (1991)	42.8° (1965)
19	66.2°	51.8°	38%	82° (1999)	38.3° (1983)
20	66.2°	51.3°	38%	83.5° (1974)	38.8° (1983)
21	67.5°	50.2°	23%	84.4° (1974)	41.4° (1968)
22	67.6°	50.2°	28%	84.7° (1990)	42.8° (1961)
23	66.7°	51.3°	32%	80.6° (1989)	38.5° (2000)
24	66.7°	50.4°	30%	83.3° (1974)	37.2° (1970)
25	66.2°	51.4°	33%	83.7° (1991)	37° (1972)
26	66°	50.7°	35%	79.7° (1991)	39° (1972)
27	66.2°	50.2°	25%	83.5° (1967)	33.3° (1972)
28	66.2°	49.8°	27%	82.6° (2017)	39.4° (1983)
29	65.5°	50.4°	30%	78.4° (1992)	38.5° (1983)
30	64.6°	50°	33%	78.1° (1987)	38.5° (1971)