The climate of Walla Walla (Washington
- United States of America)
Walla Walla is a medium sized city located in the southern part of the
state of Washington in the vicinity of the border with the state of
Oregon. Walla Walla is located in Walla Walla County. The main sources
of income are agriculture and winegrowing. The region is known for its
excellent wines. Mainly Syrah and Merlot wines are produced here.
Because of its location in the north subzero temperatures are not
uncommon. This may damage the harvest in such a way it cannot be used
anymore.
Walla Walla has a Mediterranean climate with most precipitation during
the winter. Summers are pleasant, during the day temperatures may
reach tropical values. During the summer precipitation figures are
lowest. During the winter subzero temperatures (during the night) are
not uncommon and precipitation may fall in the form of sleet or snow.
Climate information
The figures below are based on long term weather and climate records.
They are an average for Walla Walla:
average maximum
temperature (°C)
average
minimum
temperature (°C)
average
hours of sunshine
per day
average days with
precipitation
per month
average
mm precipitation
per month
average
sea
temperature (°C)
January
5
-2
2
11
n/a
February
8
0
3
10
n/a
March
12
2
6
10
n/a
April
16
4
7
9
n/a
May
21
8
9
8
n/a
June
27
12
11
6
n/a
July
31
15
13
3
n/a
August
31
15
11
4
n/a
September
25
10
9
5
n/a
October
18
5
6
6
n/a
November
10
1
2
11
n/a
December
5
-2
2
12
n/a
= 0-5 mm ●
= 6-30 mm ●
= 31-60 mm ●
= 61-100 mm ●
= 101-200 mm ●
=
over 200 mm = 0-0.2 inches ● = 0.2-1.2 inches ● = 1.2-2.4 inches ● = 2.5-4 inches ● = 4.1-8 inches ● = over 8 inches
More climate information
Climate figures are very useful but don’t present a general impression
of the climate and the eventual weather circumstances within a certain
period. The figures don’t always reflect the chance of wintry weather,
extreme heat or hurricanes. That is why we offer useful extra climate
information for each month of the year:
Disclaimer
The information at this site was carefully composed from climate data collected by meteorological services, meteorological offices, climate experts and other sources. “More climate info” is based on statistics, climate data and personal experience. No rights can be derived from this site. Weather has no memory and gives no guaranties. Nothing is as changeable and unpredictable as the weather. The authors of this site feel in no way responsible for any damages caused by misinterpretation or other circumstances that may influence your holiday or trip to a certain destination. We provide information, it’s up to the reader to use it to it’s benefit.
this site in Dutch
= 0-5 mm ●
= 6-30 mm ●
= 31-60 mm ●
= 61-100 mm ●
= 101-200 mm ●
=
over 200 mm
= 0-0.2 inches ● 
= 0.2-1.2 inches ● 
= 1.2-2.4 inches ● 
= 2.5-4 inches ● 
= 4.1-8 inches ● 
= over 8 inches
