San Tan Valley in Spring
In spring (March, April and May), San Tan Valley sees average daytime highs around 83°F and overnight lows near 57°F, with 1.6 in of rain over about 5 wet days across the season. It is the 3rd-warmest season and the driest season of the year.
Over the season highs climb from about 71°F in early March to 96°F by late May. The sky is clear or mostly clear about 70% of the time across spring, and the air most often feels dry.
Spring is San Tan Valley's 2nd-best season to visit on our travel score. For the whole year in context, see San Tan Valley's year-round climate.
- Avg daytime high
- 83°F
- 3rd-warmest season
- Avg overnight low
- 57°F
- Rainfall
- 1.6 in
- 5 wet days
- Avg wind
- 6 mph
- Travel score
- 6.8
- 2nd-best season
- Months
- Mar · Apr · May
Temperature in San Tan Valley in Spring
Over the season highs climb from about 71°F in early March to 96°F by late May.
A typical spring day in San Tan Valley reaches about 83°F and drops to 57°F overnight. The warmest of the three months is May, the coolest March.
How spring really feels in San Tan Valley
Once humidity and wind are folded in, spring brings about 25 days that feel above 90°F and 0 that feel at or below 32°F.
The story in spring is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
San Tan Valley weather by month
How the three spring months (March, April and May) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 65° / 43° | 1.5 | 4.2 | 10.1 | 7.2 |
| Feb | 69° / 46° | 1.6 | 4.4 | 10.8 | 7.5 |
| Mar | 75° / 50° | 1.1 | 3 | 11.7 | 8.4 |
| Apr | 83° / 56° | 0.3 | 1.4 | 12.8 | 7.5 |
| May | 92° / 65° | 0.2 | 0.7 | 13.7 | 4.4 |
| Jun | 101° / 74° | 0.1 | 0.6 | 14.2 | 1.0 |
| Jul | 103° / 81° | 0.8 | 3.8 | 14 | 0.3 |
| Aug | 101° / 80° | 1.1 | 4.9 | 13.2 | 0.8 |
| Sep | 97° / 74° | 1.0 | 3.2 | 12.2 | 2.5 |
| Oct | 87° / 62° | 0.7 | 2.4 | 11.2 | 6.3 |
| Nov | 74° / 51° | 0.7 | 2.5 | 10.3 | 8.5 |
| Dec | 65° / 43° | 1.3 | 4.3 | 9.8 | 7.0 |
Cloud cover in Spring
The sky is clear or mostly clear about 70% of the time across spring.
Chance of precipitation in Spring
San Tan Valley gets around 1.6 in of rain over 5 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 6 mph across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 12 min in early March to 14 hours by late May. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 7.2 kWh/m².
Is spring a good time to visit San Tan Valley?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit San Tan Valley for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for San Tan Valley in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, San Tan Valley sees daytime highs around 83°F and nights near 57°F. Pack light clothes and sun protection. About 5 days see rain.
UV index in San Tan Valley in Spring
Clear-sky midday UV across spring averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in San Tan Valley peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 4 | 5 | 5 | 7 | 9 | 11 | 11 | 11 | 9 | 6 | 4 | 3 |
| Level | Moderate | Moderate | Moderate | Very high | Very high | Extreme | Extreme | Extreme | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 5 | Moderate |
| Mar | 5 | Moderate |
| Apr | 7 | Very high |
| May | 9 | Very high |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 11 | Extreme |
| Sep | 9 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 3 | Moderate |
Air quality in San Tan Valley in Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.
Air quality in San Tan Valley is worst in June — around 28 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 12 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 13 | 13 | 14 | 14 | 14 | 28 | 14 | 13 | 13 | 12 | 13 | 13 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 13 | Moderate |
| Feb | 13 | Moderate |
| Mar | 14 | Moderate |
| Apr | 14 | Moderate |
| May | 14 | Moderate |
| Jun | 28 | Moderate |
| Jul | 14 | Moderate |
| Aug | 13 | Moderate |
| Sep | 13 | Moderate |
| Oct | 12 | Moderate |
| Nov | 13 | Moderate |
| Dec | 13 | Moderate |
Where is San Tan Valley?
San Tan Valley sits at 33.2°N, 111.5°W, 1,516 ft above sea level, in United States. The nearest listed city is Queen Creek, 7.5 mi away.
Topography around San Tan Valley
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of San Tan Valley.
Within 2 miles, the terrain around San Tan Valley has only modest variations in elevation — a maximum elevation change of 92 ft around an average of 1,516 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,066 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,251 ft.
The land around San Tan Valley is covered by cropland (40%) and bare terrain (25%) within 2 miles, bare terrain (28%), grassland (27%) and shrubs (25%) within 10 miles, and shrubs (58%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for San Tan Valley (33.1911°, -111.528°, elevation 1,516 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.