San Tan Valley, Arizona, United States Climate Change Severity

48
High
The current climate change severity in San Tan Valley is High, with a -7.3% 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 Tan Valley 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 Tan Valley temperature has changed by around -2.02%, 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
130132
1.5%
cloudyCloudy
4032
-20%
rainyRainy
2519
-24%
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 Tan Valley 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 Tan Valley experienced significant changes:

Temperature change of

-0.4 °C

Variation in annual rainfall

-39.6 %

Change in average humidity

+3.2 %

PM2.5 levels surged by

+100 %

Heatwave changed by

-9.9 day(s)

Coldwave changed by

-2.2 day(s)

Wind speeds changed by

+2.3 km/h

These indicators show improvement in key parametes of climate, but San Tan Valley 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 Tan Valley Weather Forecast 30 Days (August - September 2025)
San Tan Valley, Arizona, United States

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Mon. 11, Aug.
sunnySunny
Temperature Icon41°/25°
Humidity Icon35%
Wind Icon16km/h
Tue. 12, Aug.
sunnySunny
Temperature Icon42°/27°
Humidity Icon28%
Wind Icon25km/h
Wed. 13, Aug.
sunnySunny
Temperature Icon41°/29°
Humidity Icon27%
Wind Icon24km/h
Thu. 14, Aug.
sunnySunny
Temperature Icon40°/30°
Humidity Icon26%
Wind Icon25km/h
Fri. 15, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon38°/28°
Humidity Icon41%
Wind Icon31km/h
Sat. 16, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon37°/25°
Humidity Icon47%
Wind Icon22km/h
Sun. 17, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon36°/28°
Humidity Icon42%
Wind Icon12km/h
Mon. 18, Aug.
sunnySunny
Temperature Icon38°/30°
Humidity Icon28%
Wind Icon11km/h
Tue. 19, Aug.
sunnySunny
Temperature Icon41°/32°
Humidity Icon20%
Wind Icon13km/h
Wed. 20, Aug.
sunnySunny
Temperature Icon41°/31°
Humidity Icon16%
Wind Icon16km/h
Thu. 21, Aug.
sunnySunny
Temperature Icon40°/32°
Humidity Icon27%
Wind Icon22km/h
Fri. 22, Aug.
moderate rainModerate rain
Temperature Icon32°/24°
Humidity Icon53%
Wind Icon24km/h
Sat. 23, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon36°/28°
Humidity Icon49%
Wind Icon10km/h
Sun. 24, Aug.
patchy rain possiblePatchy rain possible
Temperature Icon38°/27°
Humidity Icon36%
Wind Icon15km/h
Mon. 25, Aug.
patchy rain possiblePatchy rain possible
Temperature Icon38°/28°
Humidity Icon36%
Wind Icon13km/h
Tue. 26, Aug.
patchy rain possiblePatchy rain possible
Temperature Icon38°/28°
Humidity Icon33%
Wind Icon15km/h
Wed. 27, Aug.
moderate rain at timesModerate rain at times
Temperature Icon39°/28°
Humidity Icon31%
Wind Icon13km/h
Thu. 28, Aug.
moderate rain at timesModerate rain at times
Temperature Icon39°/28°
Humidity Icon30%
Wind Icon16km/h
Fri. 29, Aug.
moderate rain at timesModerate rain at times
Temperature Icon39°/28°
Humidity Icon31%
Wind Icon14km/h
Sat. 30, Aug.
moderate rain at timesModerate rain at times
Temperature Icon39°/28°
Humidity Icon33%
Wind Icon16km/h
Sun. 31, Aug.
moderate rain at timesModerate rain at times
Temperature Icon38°/28°
Humidity Icon34%
Wind Icon16km/h
Mon. 1, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon37°/27°
Humidity Icon35%
Wind Icon16km/h
Tue. 2, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon37°/27°
Humidity Icon35%
Wind Icon13km/h
Wed. 3, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon38°/27°
Humidity Icon32%
Wind Icon16km/h
Thu. 4, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon38°/28°
Humidity Icon31%
Wind Icon15km/h
Fri. 5, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon38°/27°
Humidity Icon30%
Wind Icon13km/h
Sat. 6, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon38°/27°
Humidity Icon31%
Wind Icon13km/h
Sun. 7, Sep.
heavy rain at timesHeavy rain at times
Temperature Icon37°/28°
Humidity Icon37%
Wind Icon13km/h
Mon. 8, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon36°/27°
Humidity Icon38%
Wind Icon16km/h
Tue. 9, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon35°/25°
Humidity Icon38%
Wind Icon15km/h
Wed. 10, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon35°/25°
Humidity Icon37%
Wind Icon14km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onTue. 12, Aug.

41.6°C

Low will be onFri. 22, Aug.

24.1°C

HumidityHumidity

High will be onFri. 22, Aug.

53%

Low will be onWed. 20, Aug.

16%

Wind SpeedWind Speed

High will be onFri. 15, Aug.

30.6km/h

Low will be onSat. 23, Aug.

9.7km/h

PrecipitationPrecipitation

High will be onFri. 22, Aug.

7.09mm

Low will be onTue. 12, Aug.

0.08mm

Ultraviolet IndexUV

High will be onThu. 14, Aug.

9

Low will be onFri. 22, Aug.

6

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