As of 02:44 PDT

Kennewick, WA weather in September

68°

Kennewick, Sunday, 9 August, 02:44

Clear. Feels like 67°. High 91°, low 66°.

Pressure29.88 inHg

Wind3.7 mph S

Humidity58%

Visibility6.2 mi

Dew point52°

See detailed hourly forecast

In September, Kennewick, WA averages a high of 80.4° and a low of 56.2°. About 0.4 inches of precipitation fall over the month (2 wet days). The record high is 104.4° (2022) and the record low 37° (2000). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	86°	60.3°	5%	102.4° (1987)	49.1° (2021)
2	85.5°	60.1°	3%	104.4° (2022)	49.1° (1975)
3	85.6°	60.6°	5%	101.5° (2017)	48° (2000)
4	86.2°	60.1°	3%	102.7° (2017)	50.2° (1969)
5	85.8°	59.7°	2%	100.4° (2017)	50.5° (2000)
6	84.4°	59.7°	10%	99.5° (2024)	49.3° (1996)
7	84.4°	59.5°	5%	100.2° (2024)	48° (1971)
8	83.8°	58.8°	8%	99.7° (2011)	46° (1960)
9	82.9°	58.8°	7%	97.5° (2011)	46.9° (1976)
10	82.8°	57.9°	7%	97° (2011)	47.8° (1964)
11	82.6°	58.1°	8%	98.6° (2011)	47.7° (1982)
12	82.4°	56.7°	2%	97.7° (2011)	45.9° (2014)
13	81.3°	56.8°	8%	95.7° (2013)	45.5° (1970)
14	81°	56.5°	10%	95.7° (2013)	40.3° (1970)
15	80.2°	56.1°	10%	95.5° (1975)	43.5° (1982)
16	79.5°	55.4°	7%	94.1° (1981)	43.5° (1965)
17	78.8°	55.8°	10%	94.6° (1981)	40.8° (1965)
18	77.7°	55.4°	20%	94.5° (1981)	42.3° (1965)
19	77.5°	54.3°	13%	91° (2012)	40.5° (1965)
20	76.8°	54°	13%	91.2° (2012)	39.4° (1983)
21	76.3°	53.2°	12%	95° (1967)	44.2° (1983)
22	77°	53.4°	5%	91.8° (2011)	43.5° (1996)
23	77°	53.6°	7%	92.8° (2011)	37° (2000)
24	77.2°	53.1°	8%	93.4° (2011)	40.5° (1972)
25	77.5°	53.6°	5%	93° (1974)	42.3° (1970)
26	77°	53.6°	5%	89.2° (1991)	40.6° (1972)
27	76.3°	53.2°	12%	90.5° (1963)	38.5° (1972)
28	76.8°	52.5°	10%	93.6° (1963)	38.5° (1984)
29	76.3°	52.7°	8%	88.7° (1963)	37.9° (1985)
30	75.4°	52.5°	12%	88° (1991)	37.9° (2019)