Signal Hill, California, United States Climate Change Severity

57
High
The current climate change severity in Signal Hill is High, with a 6.07% 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 Aug. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Signal Hill 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), Signal Hill temperature has changed by around -5.3%, and has experienced notable climate changes.

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

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
13917
-87.7%
cloudyCloudy
5852
-10.3%
rainyRainy
3329
-12.1%
snowySnowy
00
0%
mistyMisty
036
100%

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

Climate Change Indicators:

Over the past 15 years, Signal Hill 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, Signal Hill experienced significant changes:

Temperature change of

-0.9 °C

Variation in annual rainfall

-16.5 %

Change in average humidity

+16.2 %

PM2.5 levels surged by

-32.7 %

Heatwave changed by

-10.7 day(s)

Coldwave changed by

-1.4 day(s)

Wind speeds changed by

-0.8 km/h

These indicators show that Signal Hill 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 Aug.

Signal Hill Weather Forecast 30 Days (September - October 2025)
Signal Hill, California, United States

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Mon. 29, Sep.
sunnySunny
Temperature Icon29°/16°
Humidity Icon74%
Wind Icon18km/h
Tue. 30, Sep.
overcastOvercast
Temperature Icon24°/18°
Humidity Icon79%
Wind Icon17km/h
Wed. 1, Oct.
overcastOvercast
Temperature Icon23°/17°
Humidity Icon81%
Wind Icon16km/h
Thu. 2, Oct.
sunnySunny
Temperature Icon24°/19°
Humidity Icon63%
Wind Icon15km/h
Fri. 3, Oct.
sunnySunny
Temperature Icon24°/20°
Humidity Icon71%
Wind Icon15km/h
Sat. 4, Oct.
sunnySunny
Temperature Icon25°/19°
Humidity Icon64%
Wind Icon16km/h
Sun. 5, Oct.
partly cloudyPartly Cloudy
Temperature Icon22°/19°
Humidity Icon67%
Wind Icon16km/h
Mon. 6, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon20°/18°
Humidity Icon63%
Wind Icon21km/h
Tue. 7, Oct.
cloudyCloudy
Temperature Icon21°/18°
Humidity Icon51%
Wind Icon17km/h
Wed. 8, Oct.
sunnySunny
Temperature Icon23°/18°
Humidity Icon51%
Wind Icon17km/h
Thu. 9, Oct.
sunnySunny
Temperature Icon27°/21°
Humidity Icon39%
Wind Icon17km/h
Fri. 10, Oct.
sunnySunny
Temperature Icon25°/20°
Humidity Icon60%
Wind Icon15km/h
Sat. 11, Oct.
sunnySunny
Temperature Icon21°/18°
Humidity Icon68%
Wind Icon18km/h
Sun. 12, Oct.
sunnySunny
Temperature Icon24°/18°
Humidity Icon57%
Wind Icon16km/h
Mon. 13, Oct.
moderate rain at timesModerate rain at times
Temperature Icon25°/18°
Humidity Icon62%
Wind Icon15km/h
Tue. 14, Oct.
heavy rain at timesHeavy rain at times
Temperature Icon26°/18°
Humidity Icon61%
Wind Icon14km/h
Wed. 15, Oct.
moderate rain at timesModerate rain at times
Temperature Icon27°/18°
Humidity Icon57%
Wind Icon15km/h
Thu. 16, Oct.
patchy rain possiblePatchy rain possible
Temperature Icon27°/18°
Humidity Icon55%
Wind Icon14km/h
Fri. 17, Oct.
patchy rain possiblePatchy rain possible
Temperature Icon26°/18°
Humidity Icon60%
Wind Icon14km/h
Sat. 18, Oct.
patchy rain possiblePatchy rain possible
Temperature Icon25°/18°
Humidity Icon61%
Wind Icon15km/h
Sun. 19, Oct.
moderate rain at timesModerate rain at times
Temperature Icon26°/18°
Humidity Icon59%
Wind Icon14km/h
Mon. 20, Oct.
patchy rain possiblePatchy rain possible
Temperature Icon26°/18°
Humidity Icon59%
Wind Icon16km/h
Wed. 22, Oct.
patchy rain possiblePatchy rain possible
Temperature Icon25°/17°
Humidity Icon62%
Wind Icon15km/h
Thu. 23, Oct.
patchy rain possiblePatchy rain possible
Temperature Icon25°/17°
Humidity Icon62%
Wind Icon14km/h
Fri. 24, Oct.
patchy rain possiblePatchy rain possible
Temperature Icon25°/17°
Humidity Icon59%
Wind Icon13km/h
Sat. 25, Oct.
moderate rain at timesModerate rain at times
Temperature Icon25°/17°
Humidity Icon58%
Wind Icon15km/h
Sun. 26, Oct.
patchy rain possiblePatchy rain possible
Temperature Icon26°/17°
Humidity Icon52%
Wind Icon15km/h
Mon. 27, Oct.
patchy rain possiblePatchy rain possible
Temperature Icon25°/16°
Humidity Icon51%
Wind Icon14km/h
Tue. 28, Oct.
patchy rain possiblePatchy rain possible
Temperature Icon24°/16°
Humidity Icon53%
Wind Icon16km/h
Wed. 29, Oct.
sunnySunny
Temperature Icon25°/16°
Humidity Icon52%
Wind Icon14km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onMon. 29, Sep.

29.3°C

Low will be onWed. 29, Oct.

15.5°C

HumidityHumidity

High will be onWed. 1, Oct.

81%

Low will be onThu. 9, Oct.

39%

Wind SpeedWind Speed

High will be onMon. 6, Oct.

20.5km/h

Low will be onFri. 24, Oct.

13.3km/h

PrecipitationPrecipitation

High will be onTue. 14, Oct.

1.3mm

Low will be onTue. 7, Oct.

0.02mm

Ultraviolet IndexUV

High will be onSat. 4, Oct.

6

Low will be onMon. 6, Oct.

4

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