Walla Walla, Washington, United States Climate Change Severity

62
Very High
The current climate change severity in Walla Walla is Very High, with a 22.04% worsening in the climate score compared to last 15 years. This suggests deteriorating conditions, with increasing negative impacts on weather patterns and environmental conditions.
Data: Jan. to May (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C

Walla Walla Weather Condition Changes (Historic Vs 2025)

2025
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Historic
2025

Over the past 15 year(s), Walla Walla temperature has changed by around -25.7%, and has experienced notable climate changes.

Sunny
Cloudy
Rainy
Snowy
Misty

Data: Jan. to May (Historical Vs 2025)

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
4227
-35.7%
cloudyCloudy
5428
-48.1%
rainyRainy
6454
-15.6%
snowySnowy
45
25%
mistyMisty
00
0%

Climate Change Indicators:

Over the past 15 years, Walla Walla has experienced measurable shifts in key climate parameters, contributing to the current severity score of 62 (within the Very High severity category). This suggests worsening climate conditions from the previous years. Here’s a breakdown of the specific changes observed:

Severity Score

62/100

Very High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Walla Walla experienced significant changes:

Temperature change of

-2.2 °C

Variation in annual rainfall

+33.2 %

Change in average humidity

+11.5 %

PM2.5 levels surged by

+10.6 %

Heatwave changed by

-2.7 day(s)

Coldwave changed by

-2.06 day(s)

Wind speeds changed by

-1.1 km/h

These indicators show a dramatic increase in volatility and worsening conditions. Walla Walla's Very High severity status requires urgent and immediate adaptation and mitigation strategies, particularly focused on managing extreme weather events, improving air quality, and ensuring water resources are adequate for the population.

Check how we calculate Climate Change Severity

Based on data from Jan. to May

Walla Walla Weather Forecast 30 Days (July 2025)
Walla Walla, Washington, United States

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Tue. 1, Jul.
sunnySunny
Temperature Icon34°/20°
Humidity Icon31%
Wind Icon17km/h
Wed. 2, Jul.
sunnySunny
Temperature Icon29°/17°
Humidity Icon50%
Wind Icon35km/h
Thu. 3, Jul.
partly cloudyPartly Cloudy
Temperature Icon24°/10°
Humidity Icon59%
Wind Icon28km/h
Fri. 4, Jul.
patchy rain possiblePatchy rain nearby
Temperature Icon27°/13°
Humidity Icon27%
Wind Icon22km/h
Sat. 5, Jul.
sunnySunny
Temperature Icon27°/14°
Humidity Icon31%
Wind Icon32km/h
Sun. 6, Jul.
sunnySunny
Temperature Icon31°/14°
Humidity Icon33%
Wind Icon24km/h
Mon. 7, Jul.
sunnySunny
Temperature Icon32°/15°
Humidity Icon27%
Wind Icon22km/h
Tue. 8, Jul.
sunnySunny
Temperature Icon34°/17°
Humidity Icon25%
Wind Icon14km/h
Wed. 9, Jul.
sunnySunny
Temperature Icon38°/21°
Humidity Icon20%
Wind Icon14km/h
Thu. 10, Jul.
sunnySunny
Temperature Icon40°/24°
Humidity Icon19%
Wind Icon17km/h
Fri. 11, Jul.
sunnySunny
Temperature Icon38°/21°
Humidity Icon22%
Wind Icon18km/h
Sat. 12, Jul.
patchy rain possiblePatchy rain nearby
Temperature Icon35°/20°
Humidity Icon34%
Wind Icon22km/h
Sun. 13, Jul.
patchy rain possiblePatchy rain nearby
Temperature Icon31°/18°
Humidity Icon46%
Wind Icon25km/h
Mon. 14, Jul.
patchy rain possiblePatchy rain possible
Temperature Icon30°/16°
Humidity Icon40%
Wind Icon14km/h
Tue. 15, Jul.
patchy rain possiblePatchy rain possible
Temperature Icon30°/17°
Humidity Icon37%
Wind Icon17km/h
Wed. 16, Jul.
patchy rain possiblePatchy rain possible
Temperature Icon30°/17°
Humidity Icon39%
Wind Icon18km/h
Thu. 17, Jul.
patchy rain possiblePatchy rain possible
Temperature Icon30°/17°
Humidity Icon39%
Wind Icon19km/h
Fri. 18, Jul.
patchy rain possiblePatchy rain possible
Temperature Icon30°/16°
Humidity Icon38%
Wind Icon17km/h
Sat. 19, Jul.
patchy rain possiblePatchy rain possible
Temperature Icon30°/16°
Humidity Icon39%
Wind Icon17km/h
Sun. 20, Jul.
patchy rain possiblePatchy rain possible
Temperature Icon30°/17°
Humidity Icon36%
Wind Icon18km/h
Mon. 21, Jul.
patchy rain possiblePatchy rain possible
Temperature Icon30°/17°
Humidity Icon34%
Wind Icon17km/h
Tue. 22, Jul.
patchy rain possiblePatchy rain possible
Temperature Icon30°/17°
Humidity Icon36%
Wind Icon19km/h
Wed. 23, Jul.
patchy rain possiblePatchy rain possible
Temperature Icon30°/16°
Humidity Icon37%
Wind Icon18km/h
Thu. 24, Jul.
patchy rain possiblePatchy rain possible
Temperature Icon30°/16°
Humidity Icon37%
Wind Icon18km/h
Fri. 25, Jul.
patchy rain possiblePatchy rain possible
Temperature Icon31°/16°
Humidity Icon35%
Wind Icon16km/h
Sat. 26, Jul.
sunnySunny
Temperature Icon32°/17°
Humidity Icon34%
Wind Icon14km/h
Sun. 27, Jul.
patchy rain possiblePatchy rain possible
Temperature Icon31°/18°
Humidity Icon35%
Wind Icon16km/h
Mon. 28, Jul.
sunnySunny
Temperature Icon32°/18°
Humidity Icon35%
Wind Icon14km/h
Tue. 29, Jul.
sunnySunny
Temperature Icon34°/19°
Humidity Icon31%
Wind Icon13km/h
Wed. 30, Jul.
sunnySunny
Temperature Icon34°/20°
Humidity Icon31%
Wind Icon16km/h
Thu. 31, Jul.
sunnySunny
Temperature Icon34°/19°
Humidity Icon33%
Wind Icon16km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onThu. 10, Jul.

40.2°C

Low will be onThu. 3, Jul.

10.1°C

HumidityHumidity

High will be onThu. 3, Jul.

59%

Low will be onThu. 10, Jul.

19%

Wind SpeedWind Speed

High will be onWed. 2, Jul.

35.3km/h

Low will be onTue. 29, Jul.

13km/h

PrecipitationPrecipitation

High will be onSat. 12, Jul.

0.8mm

Low will be onTue. 15, Jul.

0.1mm

Ultraviolet IndexUV

High will be onThu. 10, Jul.

8

Low will be onSun. 13, Jul.

5

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