San Tan Valley weather in October

In October, San Tan Valley sees average daytime highs of 87°F and overnight lows near 62°F, with 0.7 in of rain across 2.4 wet days and about 11.2 hours of daylight. It is the 6th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 92°F in the first days to 81°F by the end. The sky is clear or mostly clear about 79% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of October to 10 h 42 min by month's end. Set against the rest of the year, October is San Tan Valley's 2nd-clearest and 6th-windiest month. For the whole year in context, see San Tan Valley's year-round climate.

Daytime high
87°
6th warmest
Overnight low
62°
7th coldest
Rainfall
0.7 in
2.4 wet days
Daylight
11 h 12 min
6:36 AM – 5:46 PM
Cloud cover
21%
2nd clearest
Wind
6 mph
6th windiest
Solar energy
5.05 kWh/m²
Travel score
6.3
out of 10

San Tan Valley is unincorporated community in Pinal County, Arizona, United States of America.

Founded
2009

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 92°F in the first days to 81°F by the end.

A typical October day in San Tan Valley reaches about 87°F in the afternoon and slips back to 62°F overnight — a 24°F spread between the day's warmth and the night's chill. On most days the high lands between 76°F and 96°F. Set against its neighbours, October runs about 10°F cooler than September and about 12°F warmer than November.

40°60°80°100°151015202531
Avg high (°F)Avg low (°F)
19368
29268
39267
49267
59166
69166
79065
89065
98965
108964
118964
128863
138863
148763
158762
168762
178662
188661
198561
208560
218560
228460
238459
248359
258359
268258
278258
288257
298157
308156
318056

How October really feels in San Tan Valley

Once humidity and wind are folded in, October averages 8 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
8
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in October is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

San Tan Valley weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan65° / 43°1.54.210.17.2
Feb69° / 46°1.64.410.87.5
Mar75° / 50°1.1311.78.4
Apr83° / 56°0.31.412.87.5
May92° / 65°0.20.713.74.4
Jun101° / 74°0.10.614.21.0
Jul103° / 81°0.83.8140.3
Aug101° / 80°1.14.913.20.8
Sep97° / 74°1.03.212.22.5
Oct87° / 62°0.72.411.26.3
Nov74° / 51°0.72.510.38.5
Dec65° / 43°1.34.39.87.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 79% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 9% of October, with mostly cloudy or overcast conditions the remaining 12%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18911
28911
38911
48911
58911
68911
78911
88911
98911
108911
118911
128911
138911
148911
158812
168812
178812
188812
198812
208713
218713
228713
238713
248614
258614
268614
278515
288515
298416
308416
318416

Chance of precipitation in October

Any precipitation

San Tan Valley gets around 0.7 in of rain over 2.4 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 7% and peaks near 8% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
17
27
37
47
57
67
77
87
97
107
117
127
137
147
157
167
177
187
197
207
217
228
238
248
258
268
278
288
297
307
317

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the dry band about 93% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
185852
285852
386842
487841
587841
687841
788741
889740
989740
1090640
1190640
1291630
1392530
1492530
1594420
1694420
1794420
1896310
1996310
2096310
2197210
2298200
2398200
2498200
2598200
2698200
2799100
2899100
2999100
3099100
3199100

Wind in October

Winds average 6 mph in October.

Across October, daily wind ranges from about 5 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 42 min at the start of October to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over October. Sunrise moves from 6:25 AM to 6:49 AM, and sunset from 6:05 PM to 5:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:256:05
211.66:266:04
311.66:266:03
411.66:276:01
511.56:286:00
611.56:295:59
711.56:295:57
811.46:305:56
911.46:315:55
1011.46:325:53
1111.36:325:52
1211.36:335:51
1311.36:345:50
1411.26:355:48
1511.26:355:47
1611.26:365:46
1711.16:375:45
1811.16:385:44
1911.16:395:43
2011.06:405:41
2111.06:405:40
2211.06:415:39
2310.96:425:38
2410.96:435:37
2510.96:445:36
2610.86:455:35
2710.86:465:34
2810.86:465:33
2910.76:475:32
3010.76:485:31
3110.76:495:30

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.05 kWh/m².

For context, solar energy here swings from a low near 3.19 kWh/m² to a high of 8.45 kWh/m² in June across the year — October's 5.05 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.6Bright
35.6Bright
45.5Bright
55.5Bright
65.5Bright
75.4Bright
85.4Bright
95.4Bright
105.3Bright
115.3Bright
125.2Bright
135.2Bright
145.2Bright
155.1Bright
165.1Bright
175.0Bright
185.0Bright
194.9Bright
204.9Bright
214.8Bright
224.8Bright
234.8Bright
244.7Bright
254.7Bright
264.6Bright
274.6Bright
284.5Bright
294.5Bright
304.5Bright
314.4Bright
Planning a trip in October

Is October a good time to visit San Tan Valley?

Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.3
Sightseeing
7th-best month of the year
8.4
Beach & pool
2nd-best month of the year

October 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 October

From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In October, San Tan Valley sees daytime highs around 87°F and nights near 62°F. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in San Tan Valley in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 6 — 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highExtremeVery highHighModerateJun 23UV 11Dec 20UV 3
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar5Moderate
Apr7Very high
May9Very high
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in San Tan Valley in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October 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).

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 1626 µg/m³Oct 1212 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar14Moderate
Apr14Moderate
May14Moderate
Jun28Moderate
Jul14Moderate
Aug13Moderate
Sep13Moderate
Oct12Moderate
Nov13Moderate
Dec13Moderate
Location & terrain

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.

2 miles
92 ft
10 miles
1,066 ft
50 miles
7,251 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Queen Creek 7.5 mi · Florence 14 mi · Apache Junction 16 mi · Gilbert 19 mi · Chandler 20 mi · Mesa 24 mi · Casa Grande 25 mi · Tempe 27 mi

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
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).