Sebastopol, California, United States Climate Change Severity

57
High
The current climate change severity in Sebastopol is High, with a 10.3% 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 Jul. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Sebastopol 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), Sebastopol temperature has changed by around -8.9%, and has experienced notable climate changes.

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

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
9621
-78.1%
cloudyCloudy
5444
-18.5%
rainyRainy
4437
-15.9%
snowySnowy
00
0%
mistyMisty
055
100%

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

Climate Change Indicators:

Over the past 15 years, Sebastopol has experienced measurable shifts in key climate parameters, contributing to the current severity score of 57 (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

57/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Sebastopol experienced significant changes:

Temperature change of

-1.2 °C

Variation in annual rainfall

-0.2 %

Change in average humidity

+12.7 %

PM2.5 levels surged by

-42.1 %

Heatwave changed by

-5.1 day(s)

Coldwave changed by

-1.5 day(s)

Wind speeds changed by

-0.8 km/h

These indicators show that Sebastopol 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 Jul.

Sebastopol Weather Forecast 30 Days (August - September 2025)
Sebastopol, California, United States

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Mon. 25, Aug.
partly cloudyPartly Cloudy
Temperature Icon33°/14°
Humidity Icon70%
Wind Icon16km/h
Tue. 26, Aug.
partly cloudyPartly Cloudy
Temperature Icon24°/13°
Humidity Icon72%
Wind Icon15km/h
Wed. 27, Aug.
mistMist
Temperature Icon25°/11°
Humidity Icon76%
Wind Icon16km/h
Thu. 28, Aug.
sunnySunny
Temperature Icon31°/10°
Humidity Icon57%
Wind Icon14km/h
Fri. 29, Aug.
sunnySunny
Temperature Icon32°/12°
Humidity Icon48%
Wind Icon15km/h
Sat. 30, Aug.
sunnySunny
Temperature Icon34°/13°
Humidity Icon40%
Wind Icon14km/h
Sun. 31, Aug.
sunnySunny
Temperature Icon34°/14°
Humidity Icon48%
Wind Icon14km/h
Mon. 1, Sep.
sunnySunny
Temperature Icon35°/13°
Humidity Icon49%
Wind Icon14km/h
Tue. 2, Sep.
sunnySunny
Temperature Icon33°/13°
Humidity Icon52%
Wind Icon14km/h
Wed. 3, Sep.
sunnySunny
Temperature Icon30°/11°
Humidity Icon64%
Wind Icon16km/h
Thu. 4, Sep.
sunnySunny
Temperature Icon28°/10°
Humidity Icon69%
Wind Icon15km/h
Fri. 5, Sep.
sunnySunny
Temperature Icon29°/11°
Humidity Icon64%
Wind Icon15km/h
Sat. 6, Sep.
sunnySunny
Temperature Icon31°/12°
Humidity Icon60%
Wind Icon13km/h
Sun. 7, Sep.
sunnySunny
Temperature Icon31°/13°
Humidity Icon52%
Wind Icon16km/h
Mon. 8, Sep.
sunnySunny
Temperature Icon29°/14°
Humidity Icon58%
Wind Icon15km/h
Tue. 9, Sep.
sunnySunny
Temperature Icon29°/14°
Humidity Icon58%
Wind Icon14km/h
Wed. 10, Sep.
sunnySunny
Temperature Icon28°/13°
Humidity Icon60%
Wind Icon13km/h
Thu. 11, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon28°/14°
Humidity Icon62%
Wind Icon12km/h
Sat. 13, Sep.
moderate rain at timesModerate rain at times
Temperature Icon26°/13°
Humidity Icon68%
Wind Icon13km/h
Sun. 14, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon25°/12°
Humidity Icon68%
Wind Icon14km/h
Mon. 15, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon25°/12°
Humidity Icon70%
Wind Icon16km/h
Tue. 16, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon25°/12°
Humidity Icon69%
Wind Icon14km/h
Wed. 17, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon25°/12°
Humidity Icon69%
Wind Icon17km/h
Thu. 18, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon25°/13°
Humidity Icon71%
Wind Icon16km/h
Fri. 19, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon26°/13°
Humidity Icon68%
Wind Icon14km/h
Sat. 20, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon27°/13°
Humidity Icon62%
Wind Icon13km/h
Sun. 21, Sep.
moderate rain at timesModerate rain at times
Temperature Icon27°/13°
Humidity Icon58%
Wind Icon16km/h
Mon. 22, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon26°/12°
Humidity Icon60%
Wind Icon14km/h
Tue. 23, Sep.
sunnySunny
Temperature Icon27°/12°
Humidity Icon58%
Wind Icon14km/h
Wed. 24, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon28°/14°
Humidity Icon57%
Wind Icon14km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onMon. 1, Sep.

34.7°C

Low will be onThu. 28, Aug.

10°C

HumidityHumidity

High will be onWed. 27, Aug.

76%

Low will be onSat. 30, Aug.

40%

Wind SpeedWind Speed

High will be onWed. 17, Sep.

16.6km/h

Low will be onThu. 11, Sep.

11.9km/h

PrecipitationPrecipitation

High will be onThu. 18, Sep.

2.2mm

Low will be onSat. 20, Sep.

0.1mm

Ultraviolet IndexUV

High will be onSat. 30, Aug.

6

Low will be onThu. 11, Sep.

4

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