Green Valley weather in August

In August, Green Valley sees average daytime highs of 91°F and overnight lows near 70°F, with 2.3 in of rain across 11.6 wet days and about 13.2 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 91°F through the month. The sky is clear or mostly clear about 47% of the time in August, and the air most often feels humid.

Daylight stretches from about 13 h 36 min at the start of August to 12 h 42 min by month's end. Set against the rest of the year, August is Green Valley's 11th-clearest and 12th-windiest month. For the whole year in context, see Green Valley's year-round climate.

Daytime high
91°
3rd warmest
Overnight low
70°
11th coldest
Rainfall
2.3 in
11.6 wet days
Daylight
13 h 12 min
5:53 AM – 7:03 PM
Cloud cover
45%
11th clearest
Wind
4 mph
12th windiest
Solar energy
6.52 kWh/m²
Travel score
3.6
out of 10

Green Valley is census-designated place in Pima County, Arizona, United States.

Density
256/km²
people per km²

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 91°F through the month.

A typical August day in Green Valley reaches about 91°F in the afternoon and slips back to 70°F overnight — a 21°F spread between the day's warmth and the night's chill. On most days the high lands between 84°F and 98°F. Set against its neighbours, August runs about 2°F cooler than July and about 3°F warmer than September.

60°70°80°90°100°151015202531
Avg high (°F)Avg low (°F)
19171
29171
39171
49171
59171
69171
79171
89171
99171
109171
119171
129171
139170
149170
159170
169170
179170
189170
199170
209170
219170
229170
239170
249170
259169
269169
279169
289069
299069
309069
319069

How August really feels in Green Valley

Once humidity and wind are folded in, August averages 31 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
31
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

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

Green Valley weather by month

How August compares with the rest of the year at a glance. August is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan63° / 38°1.03.910.26.6
Feb65° / 41°1.0410.87.1
Mar71° / 46°0.7311.88.2
Apr78° / 51°0.21.512.88.8
May87° / 58°0.11.113.66.4
Jun95° / 67°0.32143.4
Jul93° / 72°2.511.513.93.0
Aug91° / 70°2.311.613.23.6
Sep89° / 66°1.45.612.25.1
Oct81° / 56°0.72.811.27.9
Nov71° / 46°0.62.510.48.3
Dec62° / 38°1.14.2106.4

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 47% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 23% of August, with mostly cloudy or overcast conditions the remaining 30%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16238
26337
36436
46436
56535
66634
76733
86832
96931
106931
117030
127030
137030
147030
157030
167030
177030
187129
197129
207129
217228
227327
237327
247327
257426
267426
277525
287525
297624
307723
317822

Chance of precipitation in August

Any precipitation

Green Valley gets around 2.3 in of rain over 11.6 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 37% and peaks near 41% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
141
240
340
439
539
638
738
837
937
1037
1137
1237
1337
1437
1537
1638
1738
1838
1938
2038
2138
2238
2338
2438
2537
2637
2736
2835
2934
3034
3133

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the humid band about 36% of days. Sticky, muggy-or-worse air turns up on roughly 17% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1192437200
2192537200
3192537190
4182537190
5182637190
6182637190
7182637180
8182737180
9182737170
10182837170
11182837170
12182837170
13182837160
14182837160
15182837161
16192836161
17192836171
18192736171
19192736171
20202736171
21202736171
22212636171
23212636161
24222636161
25232635161
26232535160
27242535150
28252535150
29262534140
30272534130
31292534130

Wind in August

Winds average 4 mph in August, the calmest month.

Across August, 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.

0246810151015202531
Wind speed (mph)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
285calm
295calm
305calm
315calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 36 min at the start of August to 12 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 54 minutes over August. Sunrise moves from 5:43 AM to 6:03 AM, and sunset from 7:17 PM to 6:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:437:17
213.65:437:16
313.55:447:16
413.55:457:15
513.55:457:14
613.55:467:13
713.45:477:12
813.45:477:11
913.45:487:10
1013.35:497:09
1113.35:497:08
1213.35:507:07
1313.35:517:06
1413.25:517:05
1513.25:527:04
1613.25:537:03
1713.15:537:02
1813.15:547:01
1913.15:557:00
2013.15:556:59
2113.05:566:58
2213.05:576:57
2313.05:576:55
2412.95:586:54
2512.95:596:53
2612.95:596:52
2712.86:006:51
2812.86:016:49
2912.86:016:48
3012.76:026:47
3112.76:036:46

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.52 kWh/m².

For context, solar energy here swings from a low near 3.45 kWh/m² to a high of 8.29 kWh/m² in June across the year — August's 6.52 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.7Intense
26.7Intense
36.7Intense
46.7Intense
56.7Intense
66.7Intense
76.7Intense
86.7Intense
96.6Intense
106.6Intense
116.6Intense
126.6Intense
136.6Intense
146.6Intense
156.6Intense
166.5Intense
176.5Intense
186.5Intense
196.5Intense
206.5Intense
216.4Intense
226.4Intense
236.4Intense
246.4Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.2Intense
316.2Intense
Planning a trip in August

Is August a good time to visit Green Valley?

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

3.6
Sightseeing
10th-best month of the year
6.3
Beach & pool
6th-best month of the year

August is a weaker month for outdoor sightseeing in Green Valley. The water and warmth also suit a beach or pool day.

What to pack for Green Valley in August

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

In August, Green Valley sees daytime highs around 91°F and nights near 70°F. Pack light clothes and sun protection. Worth having: rain gear. About 12 days see rain.

light clothessun protectionrain gear

UV index in Green Valley in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Green Valley peaks around June 22 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 22UV 11Dec 19UV 4
UV index (midday)Level
Jan4Moderate
Feb5High
Mar6High
Apr9Very high
May9Very high
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep10Very high
Oct7High
Nov5Moderate
Dec4Moderate
Location & terrain

Where is Green Valley?

Green Valley sits at 31.9°N, 111.0°W, 2,904 ft above sea level, in United States. The nearest listed city is Sahuarita, 7.5 mi away.

Topography around Green Valley

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

Within 2 miles, the terrain around Green Valley has only modest variations in elevation — a maximum elevation change of 351 ft around an average of 2,940 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,159 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,277 ft.

The land around Green Valley is covered by shrubs (46%) and artificial surfaces (33%) within 2 miles, shrubs (78%) within 10 miles, and shrubs (80%) within 50 miles.

2 miles
351 ft
10 miles
3,159 ft
50 miles
7,277 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Sahuarita 7.5 mi · Drexel Heights 20 mi · Vail 21 mi · Tucson 25 mi · Rio Rico 27 mi · Flowing Wells 30 mi · Catalina Foothills 31 mi · Tanque Verde 31 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 Green Valley (31.8543°, -110.9937°, elevation 2,904 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).