As of 00:08 PDT

Kennewick, WA weather in December

77°

Kennewick, Sunday, 9 August, 00:08

Clear. Feels like 75°. High 91°, low 64°.

Pressure29.88 inHg

Wind6.3 mph S

Humidity31%

Visibility6.2 mi

Dew point44°

See detailed hourly forecast

In December, Kennewick, WA averages a high of 41.2° and a low of 29.5°. About 1.5 inches of precipitation fall over the month (9 wet days). The record high is 67.5° (2025) and the record low -8.3° (1964). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	44.4°	32.2°	35%	66.2° (2021)	-7.6° (1985)
2	44.6°	32.9°	37%	62.8° (2021)	7.3° (1985)
3	44.1°	32.4°	25%	61.7° (1975)	15.4° (1985)
4	43°	31.5°	33%	62.4° (2007)	17.1° (1985)
5	41.9°	29.8°	27%	56.8° (2012)	16.7° (1985)
6	42.8°	30.7°	37%	61.7° (1970)	15.1° (2013)
7	40.5°	30°	25%	58.1° (1973)	14° (2013)
8	42.3°	29.7°	32%	64.6° (2015)	8.1° (1972)
9	42.1°	30.2°	28%	60.6° (1987)	10° (1972)
10	43.3°	31.3°	38%	64.6° (2025)	8.4° (1972)
11	42.8°	31.1°	28%	63.1° (2014)	6.8° (1985)
12	43.2°	30.7°	37%	59.4° (2010)	9.1° (1985)
13	42.1°	30.7°	37%	57.9° (2010)	4.1° (1972)
14	42.8°	30.2°	27%	64° (2002)	9° (1985)
15	43.3°	30°	25%	67.5° (2025)	7.5° (1985)
16	41.5°	30.6°	28%	60.8° (2025)	-4.5° (1964)
17	41.2°	29.8°	25%	60.3° (2025)	-8.3° (1964)
18	40.8°	29.5°	32%	55.8° (2024)	3.4° (1964)
19	40.8°	28°	25%	57.4° (2025)	3.9° (1984)
20	39.7°	28.9°	32%	62.2° (2019)	-1.7° (2008)
21	40.6°	28.8°	30%	63.5° (1972)	3° (1990)
22	39.7°	28°	33%	56.5° (2020)	-0.6° (1990)
23	39.7°	28.4°	32%	55.2° (2013)	3.4° (1983)
24	39.7°	28.2°	30%	53.8° (1961)	3.7° (1990)
25	38.5°	27.5°	23%	64.6° (1980)	4.8° (1990)
26	39.4°	27.9°	32%	62.2° (1980)	7.5° (2008)
27	40.5°	28.8°	28%	61° (1980)	12° (1983)
28	38.7°	27.9°	32%	56.3° (2011)	5.9° (1983)
29	37.8°	27.3°	33%	55.8° (1998)	1.4° (1968)
30	37.8°	27.1°	33%	53.4° (1998)	-3.8° (1968)
31	37.4°	25.3°	17%	54.5° (1998)	-0.2° (1968)