San Bernardino, California, United States Climate Change Severity

48
High
The current climate change severity in San Bernardino is High, with a -11.001% improvement in the climate score compared to last 15 years. This suggests improved conditions, with more favorable environmental indicators and a reduction in negative impacts.
Data: Jan. to Jul. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C

San Bernardino 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), San Bernardino temperature has changed by around -0.8%, 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
130103
-20.7%
cloudyCloudy
3954
38.4%
rainyRainy
3230
-6.2%
snowySnowy
00
0%
mistyMisty
00
0%

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

Climate Change Indicators:

Over the past 15 years, San Bernardino has experienced measurable shifts in key climate parameters, contributing to the current severity score of 48 (within the High severity category). While the score remains High, certain factors have improved over time. Here’s a breakdown of the specific changes observed:

Severity Score

48/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, San Bernardino experienced significant changes:

Temperature change of

-0.1 °C

Variation in annual rainfall

+10.5 %

Change in average humidity

+13.1 %

PM2.5 levels surged by

+100 %

Heatwave changed by

-10.8 day(s)

Coldwave changed by

+1.2 day(s)

Wind speeds changed by

-0.7 km/h

These indicators show improvement in key parametes of climate, but San Bernardino remains in the High severity category. Continuous focus on climate resilience is necessary to avoid further worsening and ensure sustainability.

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

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

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Mon. 11, Aug.
sunnySunny
Temperature Icon36°/19°
Humidity Icon41%
Wind Icon13km/h
Tue. 12, Aug.
sunnySunny
Temperature Icon33°/20°
Humidity Icon43%
Wind Icon14km/h
Wed. 13, Aug.
sunnySunny
Temperature Icon33°/19°
Humidity Icon44%
Wind Icon14km/h
Thu. 14, Aug.
sunnySunny
Temperature Icon36°/16°
Humidity Icon35%
Wind Icon16km/h
Fri. 15, Aug.
sunnySunny
Temperature Icon35°/14°
Humidity Icon41%
Wind Icon15km/h
Sat. 16, Aug.
sunnySunny
Temperature Icon33°/17°
Humidity Icon42%
Wind Icon15km/h
Sun. 17, Aug.
sunnySunny
Temperature Icon34°/17°
Humidity Icon38%
Wind Icon15km/h
Mon. 18, Aug.
sunnySunny
Temperature Icon36°/14°
Humidity Icon31%
Wind Icon14km/h
Tue. 19, Aug.
sunnySunny
Temperature Icon36°/16°
Humidity Icon28%
Wind Icon13km/h
Wed. 20, Aug.
sunnySunny
Temperature Icon37°/17°
Humidity Icon25%
Wind Icon13km/h
Thu. 21, Aug.
sunnySunny
Temperature Icon39°/18°
Humidity Icon21%
Wind Icon13km/h
Fri. 22, Aug.
sunnySunny
Temperature Icon39°/19°
Humidity Icon21%
Wind Icon13km/h
Sat. 23, Aug.
sunnySunny
Temperature Icon39°/18°
Humidity Icon22%
Wind Icon14km/h
Sun. 24, Aug.
sunnySunny
Temperature Icon39°/19°
Humidity Icon21%
Wind Icon15km/h
Mon. 25, Aug.
patchy rain possiblePatchy rain possible
Temperature Icon35°/21°
Humidity Icon38%
Wind Icon15km/h
Tue. 26, Aug.
sunnySunny
Temperature Icon36°/21°
Humidity Icon35%
Wind Icon15km/h
Wed. 27, Aug.
patchy rain possiblePatchy rain possible
Temperature Icon36°/21°
Humidity Icon33%
Wind Icon15km/h
Thu. 28, Aug.
sunnySunny
Temperature Icon37°/21°
Humidity Icon34%
Wind Icon15km/h
Fri. 29, Aug.
patchy rain possiblePatchy rain possible
Temperature Icon37°/22°
Humidity Icon33%
Wind Icon14km/h
Sat. 30, Aug.
patchy rain possiblePatchy rain possible
Temperature Icon36°/21°
Humidity Icon35%
Wind Icon14km/h
Sun. 31, Aug.
patchy rain possiblePatchy rain possible
Temperature Icon35°/21°
Humidity Icon37%
Wind Icon14km/h
Mon. 1, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon35°/21°
Humidity Icon36%
Wind Icon15km/h
Tue. 2, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon35°/20°
Humidity Icon40%
Wind Icon14km/h
Wed. 3, Sep.
moderate rain at timesModerate rain at times
Temperature Icon35°/20°
Humidity Icon42%
Wind Icon15km/h
Thu. 4, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon35°/21°
Humidity Icon40%
Wind Icon14km/h
Fri. 5, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon35°/21°
Humidity Icon38%
Wind Icon13km/h
Sat. 6, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon36°/21°
Humidity Icon37%
Wind Icon13km/h
Sun. 7, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon35°/21°
Humidity Icon39%
Wind Icon14km/h
Mon. 8, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon34°/21°
Humidity Icon37%
Wind Icon14km/h
Tue. 9, Sep.
heavy rain at timesHeavy rain at times
Temperature Icon34°/20°
Humidity Icon38%
Wind Icon14km/h
Wed. 10, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon33°/20°
Humidity Icon43%
Wind Icon14km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onFri. 22, Aug.

39.4°C

Low will be onMon. 18, Aug.

13.6°C

HumidityHumidity

High will be onWed. 13, Aug.

44%

Low will be onThu. 21, Aug.

21%

Wind SpeedWind Speed

High will be onThu. 14, Aug.

15.5km/h

Low will be onWed. 20, Aug.

12.6km/h

PrecipitationPrecipitation

High will be onTue. 9, Sep.

1.4mm

Low will be onWed. 27, Aug.

0.1mm

Ultraviolet IndexUV

High will be onTue. 19, Aug.

7

Low will be onSat. 16, Aug.

6

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