San Tan Valley, Arizona, United States Climate Change Severity

62
Very High
The current climate change severity in San Tan Valley is Very High, with a 20.2% worsening in the climate score compared to last 16 years. This suggests deteriorating conditions, with increasing negative impacts on weather patterns and environmental conditions.
Data: Jan. to Jul. (Historical Vs 2026) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100


San Tan Valley Weather Condition Changes (Historic Vs 2026)

0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Historic
2026

Over the past 16 year(s), San Tan Valley temperature has changed by around +10.7%, and has experienced notable climate changes.

Sunny
Cloudy
Rainy
Snowy
Misty
Data: Jan. to Jul. (Historical Vs 2026)

Comparison of Weather Condition (Historic Vs 2026)

HistoricDays

Year 2026Days

Change

sunnySunny
130138
6.1%

cloudyCloudy
4014
-65%

rainyRainy
256
-76%

snowySnowy
00
0%

mistyMisty
01
100%

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

Climate Change Indicators:

Over the past 16 years, San Tan Valley has experienced measurable shifts in key climate parameters, contributing to the current severity score of 62 (within the Very High severity category). This suggests worsening climate conditions from the previous years. Here’s a breakdown of the specific changes observed:

Severity Score

62/100


Very High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2026, San Tan Valley experienced significant changes:

Temperature change of

+2.41 °C


Variation in annual rainfall

-19.34 %


Change in average humidity

+2.13 %


PM2.5 levels surged by

-28.38 %


Heatwave changed by

+11 Days


Coldwave changed by

-2 Days


Wind speeds changed by

+4.01 km/h


These indicators show a dramatic increase in volatility and worsening conditions. San Tan Valley's Very High severity status requires urgent and immediate adaptation and mitigation strategies, particularly focused on managing extreme weather events, improving air quality, and ensuring water resources are adequate for the population.

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

San Tan Valley Weather Forecast 30 Days (August - September 2026)
San Tan Valley, Arizona, United States


Condition
Temperature IconTemperature
Humidity IconHumi.
Wind IconWind Speed
Sun. 16, Aug.
sunnySunny

Temperature Icon40°/31°

Humidity Icon24%

Wind Icon19.8km/h
Mon. 17, Aug.
sunnySunny

Temperature Icon42°/30°

Humidity Icon26%

Wind Icon13.3km/h
Tue. 18, Aug.
sunnySunny

Temperature Icon42°/33°

Humidity Icon24%

Wind Icon19.8km/h
Wed. 19, Aug.
dust hazeDust haze

Temperature Icon41°/32°

Humidity Icon29%

Wind Icon22.3km/h
Thu. 20, Aug.
sunnySunny

Temperature Icon41°/30°

Humidity Icon34%

Wind Icon19.1km/h
Fri. 21, Aug.
sunnySunny

Temperature Icon41°/31°

Humidity Icon31%

Wind Icon20.9km/h
Sat. 22, Aug.
sunnySunny

Temperature Icon42°/30°

Humidity Icon31%

Wind Icon38.5km/h
Sun. 23, Aug.
patchy rain possibleRain Possible

Temperature Icon38°/27°

Humidity Icon39%

Wind Icon15.5km/h
Mon. 24, Aug.
patchy rain possibleRain Possible

Temperature Icon38°/27°

Humidity Icon37%

Wind Icon16.2km/h
Tue. 25, Aug.
patchy rain possibleRain Possible

Temperature Icon38°/28°

Humidity Icon35%

Wind Icon14.8km/h
Wed. 26, Aug.
patchy rain possibleRain Possible

Temperature Icon38°/28°

Humidity Icon34%

Wind Icon15km/h
Thu. 27, Aug.
moderate rain at timesRain

Temperature Icon39°/28°

Humidity Icon31%

Wind Icon14.2km/h
Fri. 28, Aug.
moderate rain at timesRain

Temperature Icon39°/28°

Humidity Icon30%

Wind Icon15.4km/h
Sat. 29, Aug.
patchy rain possibleRain Possible

Temperature Icon39°/28°

Humidity Icon31%

Wind Icon14km/h
Sun. 30, Aug.
patchy rain possibleRain Possible

Temperature Icon39°/28°

Humidity Icon32%

Wind Icon15.6km/h
Mon. 31, Aug.
heavy rain at timesHeavy Rain

Temperature Icon38°/27°

Humidity Icon34%

Wind Icon18.8km/h
Tue. 1, Sep.
moderate rain at timesRain

Temperature Icon38°/27°

Humidity Icon34%

Wind Icon16km/h
Wed. 2, Sep.
heavy rain at timesHeavy Rain

Temperature Icon38°/27°

Humidity Icon35%

Wind Icon14.7km/h
Thu. 3, Sep.
patchy rain possibleRain Possible

Temperature Icon38°/26°

Humidity Icon33%

Wind Icon17.2km/h
Fri. 4, Sep.
patchy rain possibleRain Possible

Temperature Icon39°/27°

Humidity Icon31%

Wind Icon15.4km/h
Sat. 5, Sep.
patchy rain possibleRain Possible

Temperature Icon38°/26°

Humidity Icon33%

Wind Icon16.1km/h
Sun. 6, Sep.
patchy rain possibleRain Possible

Temperature Icon38°/27°

Humidity Icon33%

Wind Icon16.1km/h
Mon. 7, Sep.
moderate rain at timesRain

Temperature Icon37°/28°

Humidity Icon37%

Wind Icon13.5km/h
Tue. 8, Sep.
moderate or heavy rain showerRain Showers

Temperature Icon37°/27°

Humidity Icon37%

Wind Icon15.4km/h
Wed. 9, Sep.
moderate or heavy rain showerRain Showers

Temperature Icon36°/25°

Humidity Icon37%

Wind Icon18.1km/h
Thu. 10, Sep.
moderate or heavy rain showerRain Showers

Temperature Icon36°/24°

Humidity Icon36%

Wind Icon16.7km/h
Fri. 11, Sep.
moderate or heavy rain showerRain Showers

Temperature Icon36°/25°

Humidity Icon35%

Wind Icon15km/h
Sat. 12, Sep.
patchy rain possibleRain Possible

Temperature Icon37°/25°

Humidity Icon32%

Wind Icon15.2km/h
Sun. 13, Sep.
heavy rain at timesHeavy Rain

Temperature Icon37°/25°

Humidity Icon31%

Wind Icon15.6km/h
Mon. 14, Sep.
patchy rain possibleRain Possible

Temperature Icon36°/25°

Humidity Icon35%

Wind Icon18.5km/h
Tue. 15, Sep.
patchy rain possibleRain Possible

Temperature Icon36°/24°

Humidity Icon31%

Wind Icon14km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onMon. 17, Aug.

42°C


Low will be onThu. 10, Sep.

24°C

HumidityHumidity

High will be onSun. 23, Aug.

39%


Low will be onSun. 16, Aug.

24%

Wind SpeedWind Speed

High will be onSat. 22, Aug.

38.5km/h


Low will be onMon. 17, Aug.

13.3km/h

PrecipitationPrecipitation

High will be onThu. 10, Sep.

2.2mm


Low will be onThu. 3, Sep.

0.01mm

Ultraviolet IndexUV

High will be onSun. 16, Aug.

10.7


Low will be onThu. 10, Sep.

6