Seattle, Washington, United States Climate Change Severity

43
High
The current climate change severity in Seattle is High, with a 0.3% 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 Sep. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Seattle 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), Seattle temperature has changed by around +3.04%, and has experienced notable climate changes.

Sunny
Cloudy
Rainy
Snowy
Misty
Data: Jan. to Sep. (Historical Vs 2025)

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
5831
-46.5%
cloudyCloudy
6157
-6.5%
rainyRainy
12776
-40.1%
snowySnowy
23
50%
mistyMisty
012
100%

Disclaimer: Other weather conditions not shown may affect the total day count.

Climate Change Indicators:

Over the past 15 years, Seattle has experienced measurable shifts in key climate parameters, contributing to the current severity score of 43 (within the High severity category). This suggests worsening climate conditions from the previous years. Here’s a breakdown of the specific changes observed:

Severity Score

43/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Seattle experienced significant changes:

Temperature change of

+0.3 °C

Variation in annual rainfall

-27.8 %

Change in average humidity

-2.1 %

PM2.5 levels surged by

-30.1 %

Heatwave changed by

-1.5 day(s)

Coldwave changed by

-6 day(s)

Wind speeds changed by

-0.002 km/h

These indicators show that Seattle is experiencing a more volatile and extreme climate, reinforcing the need for urgent intervention to mitigate risks. As the severity score rises, focus must shift to adaptation and emergency preparedness.

Check how we calculate Climate Change Severity
Based on data from Jan. to Sep.

Seattle Weather Forecast 30 Days (October - November 2025)
Seattle, Washington, United States

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Mon. 27, Oct.
moderate rainModerate rain
Temperature Icon13°/5°
Humidity Icon85%
Wind Icon9km/h
Tue. 28, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon12°/5°
Humidity Icon68%
Wind Icon10km/h
Wed. 29, Oct.
heavy rainHeavy rain
Temperature Icon13°/8°
Humidity Icon84%
Wind Icon12km/h
Thu. 30, Oct.
cloudyCloudy
Temperature Icon11°/6°
Humidity Icon80%
Wind Icon13km/h
Fri. 31, Oct.
moderate rainModerate rain
Temperature Icon8°/5°
Humidity Icon83%
Wind Icon12km/h
Sat. 1, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon12°/9°
Humidity Icon92%
Wind Icon21km/h
Sun. 2, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon12°/6°
Humidity Icon80%
Wind Icon12km/h
Mon. 3, Nov.
partly cloudyPartly Cloudy
Temperature Icon9°/4°
Humidity Icon79%
Wind Icon14km/h
Tue. 4, Nov.
moderate rainModerate rain
Temperature Icon6°/6°
Humidity Icon94%
Wind Icon8km/h
Wed. 5, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon10°/7°
Humidity Icon90%
Wind Icon19km/h
Thu. 6, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon12°/9°
Humidity Icon92%
Wind Icon21km/h
Fri. 7, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon9°/6°
Humidity Icon86%
Wind Icon15km/h
Sat. 8, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon8°/4°
Humidity Icon86%
Wind Icon7km/h
Sun. 9, Nov.
partly cloudyPartly Cloudy
Temperature Icon8°/3°
Humidity Icon79%
Wind Icon5km/h
Mon. 10, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon11°/5°
Humidity Icon83%
Wind Icon13km/h
Wed. 12, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon11°/5°
Humidity Icon82%
Wind Icon16km/h
Thu. 13, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon11°/6°
Humidity Icon83%
Wind Icon17km/h
Fri. 14, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon11°/5°
Humidity Icon84%
Wind Icon14km/h
Sat. 15, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon10°/4°
Humidity Icon84%
Wind Icon16km/h
Sun. 16, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon9°/4°
Humidity Icon82%
Wind Icon14km/h
Mon. 17, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon10°/4°
Humidity Icon81%
Wind Icon18km/h
Tue. 18, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon9°/4°
Humidity Icon79%
Wind Icon16km/h
Wed. 19, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon9°/4°
Humidity Icon79%
Wind Icon17km/h
Thu. 20, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon9°/3°
Humidity Icon79%
Wind Icon13km/h
Fri. 21, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon9°/3°
Humidity Icon79%
Wind Icon13km/h
Sun. 23, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon9°/3°
Humidity Icon83%
Wind Icon17km/h
Mon. 24, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon8°/3°
Humidity Icon83%
Wind Icon14km/h
Tue. 25, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon9°/3°
Humidity Icon82%
Wind Icon14km/h
Wed. 26, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon9°/4°
Humidity Icon84%
Wind Icon14km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onMon. 27, Oct.

13°C

Low will be onSun. 9, Nov.

2.5°C

HumidityHumidity

High will be onTue. 4, Nov.

94%

Low will be onTue. 28, Oct.

68%

Wind SpeedWind Speed

High will be onSat. 1, Nov.

20.9km/h

Low will be onSun. 9, Nov.

5.4km/h

PrecipitationPrecipitation

High will be onWed. 29, Oct.

20.7mm

Low will be onMon. 3, Nov.

0.04mm

Ultraviolet IndexUV

High will be onSat. 1, Nov.

3

Low will be onSun. 2, Nov.

2

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