Signal Hill, California, United States Climate Change Severity

57
High
The current climate change severity in Signal Hill is High, with a 11.3% 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

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 -5.9%, 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
11516
-86.08%
cloudyCloudy
5340
-24.5%
rainyRainy
3229
-9.3%
snowySnowy
00
0%
mistyMisty
027
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

-1.03 °C

Variation in annual rainfall

-13.5 %

Change in average humidity

+16.7 %

PM2.5 levels surged by

-51.5 %

Heatwave changed by

-9 day(s)

Coldwave changed by

-1.4 day(s)

Wind speeds changed by

-0.9 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 Jul.

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

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Mon. 11, Aug.
partly cloudyPartly Cloudy
Temperature Icon27°/18°
Humidity Icon77%
Wind Icon15km/h
Tue. 12, Aug.
cloudyCloudy
Temperature Icon26°/18°
Humidity Icon79%
Wind Icon15km/h
Wed. 13, Aug.
overcastOvercast
Temperature Icon27°/18°
Humidity Icon76%
Wind Icon17km/h
Thu. 14, Aug.
sunnySunny
Temperature Icon27°/21°
Humidity Icon67%
Wind Icon17km/h
Fri. 15, Aug.
sunnySunny
Temperature Icon24°/19°
Humidity Icon71%
Wind Icon16km/h
Sat. 16, Aug.
sunnySunny
Temperature Icon24°/19°
Humidity Icon69%
Wind Icon16km/h
Sun. 17, Aug.
sunnySunny
Temperature Icon25°/19°
Humidity Icon64%
Wind Icon16km/h
Mon. 18, Aug.
sunnySunny
Temperature Icon26°/20°
Humidity Icon60%
Wind Icon15km/h
Tue. 19, Aug.
sunnySunny
Temperature Icon28°/21°
Humidity Icon56%
Wind Icon15km/h
Wed. 20, Aug.
sunnySunny
Temperature Icon29°/22°
Humidity Icon53%
Wind Icon16km/h
Thu. 21, Aug.
sunnySunny
Temperature Icon29°/22°
Humidity Icon52%
Wind Icon16km/h
Fri. 22, Aug.
sunnySunny
Temperature Icon29°/22°
Humidity Icon53%
Wind Icon15km/h
Sat. 23, Aug.
sunnySunny
Temperature Icon29°/22°
Humidity Icon55%
Wind Icon15km/h
Sun. 24, Aug.
sunnySunny
Temperature Icon28°/20°
Humidity Icon64%
Wind Icon17km/h
Mon. 25, Aug.
sunnySunny
Temperature Icon28°/20°
Humidity Icon62%
Wind Icon17km/h
Tue. 26, Aug.
sunnySunny
Temperature Icon29°/20°
Humidity Icon59%
Wind Icon18km/h
Wed. 27, Aug.
patchy rain possiblePatchy rain possible
Temperature Icon30°/20°
Humidity Icon58%
Wind Icon17km/h
Thu. 28, Aug.
sunnySunny
Temperature Icon30°/20°
Humidity Icon59%
Wind Icon17km/h
Fri. 29, Aug.
sunnySunny
Temperature Icon30°/21°
Humidity Icon59%
Wind Icon17km/h
Sat. 30, Aug.
sunnySunny
Temperature Icon29°/20°
Humidity Icon61%
Wind Icon16km/h
Sun. 31, Aug.
patchy rain possiblePatchy rain possible
Temperature Icon29°/20°
Humidity Icon63%
Wind Icon16km/h
Mon. 1, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon29°/20°
Humidity Icon63%
Wind Icon16km/h
Tue. 2, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon28°/20°
Humidity Icon64%
Wind Icon17km/h
Wed. 3, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon29°/20°
Humidity Icon62%
Wind Icon17km/h
Thu. 4, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon29°/20°
Humidity Icon61%
Wind Icon17km/h
Fri. 5, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon29°/21°
Humidity Icon58%
Wind Icon17km/h
Sat. 6, Sep.
sunnySunny
Temperature Icon30°/21°
Humidity Icon58%
Wind Icon17km/h
Sun. 7, Sep.
sunnySunny
Temperature Icon29°/21°
Humidity Icon61%
Wind Icon16km/h
Mon. 8, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon29°/21°
Humidity Icon61%
Wind Icon16km/h
Tue. 9, Sep.
heavy rain at timesHeavy rain at times
Temperature Icon29°/21°
Humidity Icon59%
Wind Icon17km/h
Wed. 10, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon28°/20°
Humidity Icon64%
Wind Icon16km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onFri. 29, Aug.

29.6°C

Low will be onWed. 13, Aug.

17.6°C

HumidityHumidity

High will be onTue. 12, Aug.

79%

Low will be onThu. 21, Aug.

52%

Wind SpeedWind Speed

High will be onTue. 26, Aug.

17.6km/h

Low will be onMon. 11, Aug.

14.8km/h

PrecipitationPrecipitation

High will be onTue. 9, Sep.

1.5mm

Low will be onThu. 14, Aug.

0.01mm

Ultraviolet IndexUV

High will be onThu. 21, Aug.

7

Low will be onWed. 27, Aug.

5

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