Green Valley in Fall
In fall (September, October and November), Green Valley sees average daytime highs around 80°F and overnight lows near 56°F, with 2.7 in of rain over about 11 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 90°F in early September to 66°F by late November. The sky is clear or mostly clear about 71% of the time across fall, and the air most often feels dry.
Fall is Green Valley's 2nd-best season to visit on our travel score. For the whole year in context, see Green Valley's year-round climate.
- Avg daytime high
- 80°F
- 2nd-warmest season
- Avg overnight low
- 56°F
- Rainfall
- 2.7 in
- 11 wet days
- Avg wind
- 6 mph
- Travel score
- 7.1
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Green Valley in Fall
Over the season highs ease from about 90°F in early September to 66°F by late November.
A typical fall day in Green Valley reaches about 80°F and drops to 56°F overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Green Valley
Once humidity and wind are folded in, fall brings about 5 days that feel above 90°F and 0 that feel at or below 32°F.
The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Green Valley weather by month
How the three fall months (September, October and November) 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 | 63° / 38° | 1.0 | 3.9 | 10.2 | 6.6 |
| Feb | 65° / 41° | 1.0 | 4 | 10.8 | 7.1 |
| Mar | 71° / 46° | 0.7 | 3 | 11.8 | 8.2 |
| Apr | 78° / 51° | 0.2 | 1.5 | 12.8 | 8.8 |
| May | 87° / 58° | 0.1 | 1.1 | 13.6 | 6.4 |
| Jun | 95° / 67° | 0.3 | 2 | 14 | 3.4 |
| Jul | 93° / 72° | 2.5 | 11.5 | 13.9 | 3.0 |
| Aug | 91° / 70° | 2.3 | 11.6 | 13.2 | 3.6 |
| Sep | 89° / 66° | 1.4 | 5.6 | 12.2 | 5.1 |
| Oct | 81° / 56° | 0.7 | 2.8 | 11.2 | 7.9 |
| Nov | 71° / 46° | 0.6 | 2.5 | 10.4 | 8.3 |
| Dec | 62° / 38° | 1.1 | 4.2 | 10 | 6.4 |
Cloud cover in Fall
The sky is clear or mostly clear about 71% of the time across fall.
Chance of precipitation in Fall
Green Valley gets around 2.7 in of rain over 11 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 6 mph across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 42 min in early September to 10 h 06 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 5.1 kWh/m².
Is fall a good time to visit Green Valley?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is one of the better times to visit Green Valley for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Green Valley in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Green Valley sees daytime highs around 80°F and nights near 56°F. Pack light clothes. Worth having: a warm layer and sun protection. About 11 days see rain.
UV index in Green Valley in Fall
Clear-sky midday UV across fall 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 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 4 | 5 | 6 | 9 | 9 | 12 | 11 | 11 | 10 | 7 | 5 | 4 |
| Level | Moderate | High | High | Very high | Very high | Extreme | Extreme | Extreme | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 5 | High |
| Mar | 6 | High |
| Apr | 9 | Very high |
| May | 9 | Very high |
| Jun | 12 | Extreme |
| Jul | 11 | Extreme |
| Aug | 11 | Extreme |
| Sep | 10 | Very high |
| Oct | 7 | High |
| Nov | 5 | Moderate |
| Dec | 4 | Moderate |
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.
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 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.