Casa Grande weather in October

In October, Casa Grande sees average daytime highs of 89°F and overnight lows near 63°F, with 0.5 in of rain across 2.1 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 94°F in the first days to 83°F by the end. The sky is clear or mostly clear about 80% 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 Casa Grande's 2nd-clearest and 7th-windiest month. For the whole year in context, see Casa Grande's year-round climate.

Daytime high
89°
6th warmest
Overnight low
63°
7th coldest
Rainfall
0.5 in
2.1 wet days
Daylight
11 h 12 min
6:37 AM – 5:47 PM
Cloud cover
21%
2nd clearest
Wind
5 mph
7th windiest
Solar energy
5.1 kWh/m²
Travel score
5.5
out of 10

Casa Grande is city in Pinal County, Arizona, United States.

Density
180/km²
people per km²
Founded
1879

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 94°F in the first days to 83°F by the end.

A typical October day in Casa Grande reaches about 89°F in the afternoon and slips back to 63°F overnight — a 26°F spread between the day's warmth and the night's chill. On most days the high lands between 78°F and 97°F. Set against its neighbours, October runs about 10°F cooler than September and about 13°F warmer than November.

40°60°80°100°151015202531
Avg high (°F)Avg low (°F)
19569
29568
39468
49467
59367
69366
79266
89265
99265
109165
119164
129064
139064
149063
158963
168962
178862
188862
198861
208761
218761
228660
238660
248560
258559
268459
278458
288358
298357
308357
318257

How October really feels in Casa Grande

Once humidity and wind are folded in, October averages 14 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
14
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.

Casa Grande 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
Jan67° / 43°1.03.510.17.5
Feb71° / 47°1.13.710.87.8
Mar78° / 52°0.72.711.88.3
Apr85° / 57°0.21.112.86.8
May94° / 65°0.10.613.73.5
Jun104° / 74°0.10.514.10.4
Jul105° / 81°0.83.913.90.0
Aug103° / 81°1.14.313.20.2
Sep99° / 74°0.93.112.21.8
Oct89° / 63°0.52.111.25.5
Nov76° / 51°0.51.810.38.6
Dec66° / 43°0.93.69.97.4

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 80% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 7% of October, with mostly cloudy or overcast conditions the remaining 13%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18812
28812
38812
48812
58812
68812
78812
88812
98812
108812
118812
128911
138911
148911
158911
168911
178812
188812
198812
208812
218713
228713
238713
248614
258614
268515
278515
288416
298416
308416
318416

Chance of precipitation in October

Any precipitation

Casa Grande gets around 0.5 in of rain over 2.1 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 6% and peaks near 7% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
17
27
37
47
57
67
76
86
96
106
116
126
136
146
156
166
176
186
196
206
216
226
236
246
256
266
276
286
296
306
315

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 92% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1819631
2839521
3848521
4848521
5858511
6877510
7887410
8887410
9896410
10896410
11896410
12925300
13925300
14925300
15944200
16944200
17944200
18954100
19963100
20963100
21963100
22963100
23963100
24973000
25973000
26973000
27982000
28982000
29982000
30982000
31991000

Wind in October

Winds average 5 mph in October.

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

0246810151015202531
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

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 6:26 AM to 6:50 AM, and sunset from 6:06 PM to 5:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:266:06
211.66:266:05
311.66:276:04
411.66:286:02
511.56:296:01
611.56:296:00
711.56:305:58
811.46:315:57
911.46:315:56
1011.46:325:55
1111.36:335:53
1211.36:345:52
1311.36:355:51
1411.26:355:50
1511.26:365:48
1611.26:375:47
1711.16:385:46
1811.16:395:45
1911.16:395:44
2011.06:405:43
2111.06:415:42
2211.06:425:40
2310.96:435:39
2410.96:435:38
2510.96:445:37
2610.96:455:36
2710.86:465:35
2810.86:475:34
2910.86:485:33
3010.76:495:33
3110.76:505:32

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.1 kWh/m².

For context, solar energy here swings from a low near 3.25 kWh/m² to a high of 8.47 kWh/m² in June across the year — October's 5.1 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.6Bright
45.6Bright
55.5Bright
65.5Bright
75.5Bright
85.4Bright
95.4Bright
105.4Bright
115.3Bright
125.3Bright
135.3Bright
145.2Bright
155.2Bright
165.1Bright
175.1Bright
185.0Bright
195.0Bright
204.9Bright
214.9Bright
224.8Bright
234.8Bright
244.8Bright
254.7Bright
264.7Bright
274.6Bright
284.6Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in October

Is October a good time to visit Casa Grande?

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

5.5
Sightseeing
7th-best month of the year
8.2
Beach & pool
2nd-best month of the year

October is a reasonable time to visit Casa Grande for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Casa Grande in October

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

In October, Casa Grande sees daytime highs around 89°F and nights near 63°F. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Casa Grande in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks 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 Casa Grande 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
Apr8Very high
May9Very high
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep9Very high
Oct7High
Nov5Moderate
Dec3Moderate

Air quality in Casa Grande 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 Casa Grande 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 Casa Grande?

Casa Grande sits at 32.9°N, 111.8°W, 1,398 ft above sea level, in United States. The nearest listed city is Eloy, 14 mi away.

Topography around Casa Grande

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Casa Grande.

Within 2 miles, the terrain around Casa Grande has only modest variations in elevation — a maximum elevation change of 102 ft around an average of 1,398 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,182 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,928 ft.

The land around Casa Grande is covered by bare terrain (44%) and artificial surfaces (38%) within 2 miles, bare terrain (43%) and shrubs (25%) within 10 miles, and shrubs (59%) and bare terrain (20%) within 50 miles.

2 miles
102 ft
10 miles
2,182 ft
50 miles
4,928 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrain
October weather nearby: Eloy 14 mi · Maricopa 21 mi · Florence 24 mi · San Tan Valley 25 mi · Queen Creek 27 mi · Chandler 30 mi · Gilbert 33 mi · Ahwatukee Foothills 35 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 Casa Grande (32.8795°, -111.7574°, elevation 1,398 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).