Annual mean 12°C · wettest around January · prevailing wind W
Warmest
31.6 °C
Coldest
2.1 °C
Wettest
29%
Windiest
4.3 m/s
Prevailing
W
3.4 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Kennewick over the whole year is 12°C. July is the hottest month, with highs of about 32°C; January is the coldest, with lows of about -0°C. Kennewick has no sharply defined rainy season: the chance of rain on a given day runs from 13% in July, the driest month, to 25% in January, the wettest. Winds in Kennewick are highest in April, averaging 3.6 m/s (13 km/h), and lightest in January, at 2.3 m/s (8 km/h). The prevailing wind is from the W. The clearest skies in Kennewick come in July, when the sky is typically 4% covered; December is the cloudiest month, at 56%.
Month by month Kennewick climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
3°C
-0°C
-1°C
25%
53%
2.3 m/s
0
0
10
February
6°C
-0°C
1°C
22%
42%
3.1 m/s
0
0
23
March
11°C
3°C
7°C
21%
33%
3.1 m/s
6
0
55
April
16°C
6°C
12°C
22%
27%
3.6 m/s
32
1
76
May
22°C
12°C
18°C
21%
22%
3.4 m/s
66
16
71
June
26°C
16°C
22°C
20%
15%
3.6 m/s
68
36
51
July
32°C
19°C
28°C
13%
4%
3.1 m/s
48
66
20
August
30°C
17°C
27°C
19%
8%
2.7 m/s
54
64
23
September
24°C
12°C
21°C
20%
18%
2.6 m/s
76
28
62
October
16°C
6°C
13°C
22%
24%
2.5 m/s
40
3
79
November
8°C
3°C
5°C
22%
42%
2.5 m/s
5
0
36
December
3°C
0°C
-1°C
25%
56%
2.3 m/s
0
0
9
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Kennewick weather by season
Year round, Kennewick has days of about 3°C at their warmest in January, its coolest month, and 32°C in July, its warmest; the coolest hours of the day run from -0°C to 19°C through the year, and the average temperature over the year is 12°C around the clock. Rain is most likely around January and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Kennewick weather in winterDecember to February
High 4°CLow -0°CRain 24%
Winter in Kennewick has typical daily highs of about 4°C and lows of about -0°C, with a 24% chance of rain on a given day.
Kennewick weather in springMarch to May
High 16°CLow 7°CRain 22%
Spring in Kennewick has typical daily highs of about 16°C and lows of about 7°C, with a 22% chance of rain on a given day.
Kennewick weather in summerJune to August
High 30°CLow 17°CRain 17%
Summer in Kennewick has typical daily highs of about 30°C and lows of about 17°C, with a 17% chance of rain on a given day.
Kennewick weather in autumnSeptember to November
High 16°CLow 7°CRain 21%
Autumn in Kennewick has typical daily highs of about 16°C and lows of about 7°C, with a 21% chance of rain on a given day.
When is the rainy season in Kennewick?
Kennewick has no sharply defined rainy season: the chance of rain on a given day runs from 13% in July, the driest month, to 25% in January, the wettest.
What time of year is Kennewick windiest?
Winds in Kennewick are highest in April, averaging 3.6 m/s (13 km/h), and lightest in January, at 2.3 m/s (8 km/h). The prevailing wind is from the W.
What is the average temperature in Kennewick year round?
The average temperature in Kennewick over the whole year is 12°C. July is the hottest month, with highs of about 32°C; January is the coldest, with lows of about -0°C.