Maricopa weather in September

In September, Maricopa sees average daytime highs of 98°F and overnight lows near 75°F, with 0.9 in of rain across 3 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 101°F in the first days to 96°F by the end. The sky is clear or mostly clear about 78% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 42 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Maricopa's 4th-clearest and 7th-windiest month. For the whole year in context, see Maricopa's year-round climate.

Daytime high
98°
4th warmest
Overnight low
75°
10th coldest
Rainfall
0.9 in
3 wet days
Daylight
12 h 12 min
6:16 AM – 6:29 PM
Cloud cover
23%
4th clearest
Wind
5 mph
7th windiest
Solar energy
6.14 kWh/m²
Travel score
2.0
out of 10

Maricopa is city in the Gila River Valley in Pinal County, Arizona, United States.

Density
456/km²
people per km²
Founded
2003

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 101°F in the first days to 96°F by the end.

A typical September day in Maricopa reaches about 98°F in the afternoon and slips back to 75°F overnight — a 24°F spread between the day's warmth and the night's chill. On most days the high lands between 91°F and 105°F. Set against its neighbours, September runs about 5°F cooler than August and about 10°F warmer than October.

60°80°100°151015202530
Avg high (°F)Avg low (°F)
110179
210178
310178
410178
510178
610078
710077
810077
910077
1010076
119976
129976
139976
149975
159975
169875
179874
189874
199874
209873
219873
229773
239772
249772
259672
269671
279671
289670
299570
309570

How September really feels in Maricopa

Once humidity and wind are folded in, September averages 30 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
30
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

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

Maricopa weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan66° / 44°0.93.410.17.5
Feb70° / 47°1.13.410.87.8
Mar77° / 52°0.72.711.78.4
Apr85° / 58°0.21.212.87.0
May94° / 66°0.10.713.73.8
Jun103° / 74°0.10.314.10.6
Jul105° / 81°1.04.3140.0
Aug103° / 81°1.25.313.20.3
Sep98° / 75°0.9312.22.0
Oct88° / 63°0.61.811.25.8
Nov75° / 51°0.51.810.38.6
Dec65° / 44°0.93.49.97.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 78% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 11% of September, with mostly cloudy or overcast conditions the remaining 10%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18614
28614
38713
48713
58812
68812
78911
88911
99010
109010
119010
129010
13919
14928
15928
16928
17919
18919
19919
20919
21919
229010
239010
249010
259010
269010
279010
289010
298812
308812

Chance of precipitation in September

Any precipitation

Maricopa gets around 0.9 in of rain over 3 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 11% and peaks near 16% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
116
216
315
415
515
614
714
814
913
1013
1113
1212
1312
1411
1511
1610
1710
189
199
208
218
227
237
247
257
266
276
286
296
306

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 58% of days. Sticky, muggy-or-worse air turns up on roughly 14% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1331824187
2341824177
3351823176
4361823176
5381823165
6391822165
7401921154
8421821144
9441820144
10461819134
11481818133
12511717123
13521716123
14551614123
15571613113
16591612112
17621511102
18631510102
196614992
206814882
216913882
227212772
237212772
247611661
257611661
267910551
277910551
28819541
29819541
30829531

Wind in September

Winds average 5 mph in September.

Across September, daily wind ranges from about 4 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 42 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over September. Sunrise moves from 6:06 AM to 6:26 AM, and sunset from 6:49 PM to 6:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.76:066:49
212.76:076:48
312.66:086:47
412.66:086:45
512.66:096:44
612.56:106:43
712.56:106:41
812.56:116:40
912.46:126:38
1012.46:126:37
1112.46:136:36
1212.36:146:34
1312.36:146:33
1412.36:156:31
1512.26:166:30
1612.26:166:29
1712.26:176:27
1812.16:186:26
1912.16:196:24
2012.16:196:23
2112.06:206:21
2212.06:216:20
2312.06:216:19
2411.96:226:17
2511.96:236:16
2611.96:236:14
2711.86:246:13
2811.86:256:12
2911.76:256:10
3011.76:266:09

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.14 kWh/m².

For context, solar energy here swings from a low near 3.26 kWh/m² to a high of 8.47 kWh/m² in June across the year — September's 6.14 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.4Intense
46.4Intense
56.4Intense
66.3Intense
76.3Intense
86.3Intense
96.3Intense
106.3Intense
116.2Intense
126.2Intense
136.2Intense
146.2Intense
156.2Intense
166.1Intense
176.1Intense
186.1Intense
196.0Intense
206.0Intense
216.0Intense
226.0Bright
235.9Bright
245.9Bright
255.9Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.7Bright
Planning a trip in September

Is September a good time to visit Maricopa?

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

2.0
Sightseeing
9th-best month of the year
5.4
Beach & pool
6th-best month of the year

September is a weaker month for outdoor sightseeing in Maricopa.

What to pack for Maricopa in September

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

In September, Maricopa sees daytime highs around 98°F and nights near 75°F. Pack light clothes and sun protection. About 3 days see rain.

light clothessun protection

UV index in Maricopa in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Maricopa peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 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 19UV 3
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar5Moderate
Apr7Very high
May9Very high
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Maricopa in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Maricopa 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 Maricopa?

Maricopa sits at 33.1°N, 112.0°W, 1,175 ft above sea level, in United States. The nearest listed city is Ahwatukee Foothills, 20 mi away.

Topography around Maricopa

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

Within 2 miles, the terrain around Maricopa has only modest variations in elevation — a maximum elevation change of 46 ft around an average of 1,168 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,500 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,331 ft.

The land around Maricopa is covered by artificial surfaces (37%) and bare terrain (29%) within 2 miles, bare terrain (42%), cropland (25%) and shrubs (22%) within 10 miles, and shrubs (47%) and bare terrain (26%) within 50 miles.

2 miles
46 ft
10 miles
2,500 ft
50 miles
4,331 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Ahwatukee Foothills 20 mi · Casa Grande 21 mi · Chandler 21 mi · Gilbert 25 mi · Tempe Junction 25 mi · Tempe 26 mi · Central City 26 mi · Phoenix 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 Maricopa (33.0581°, -112.0476°, elevation 1,175 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).