Green Valley weather in May
In May, Green Valley sees average daytime highs of 87°F and overnight lows near 58°F, with 0.1 in of rain across 1.1 wet days and about 13.6 hours of daylight. It is the 5th-warmest and 12th-wettest month of the year here.
Highs climb over the month, from about 83°F in the first days to 90°F by the end. The sky is clear or mostly clear about 75% of the time in May, and the air most often feels dry.
Daylight stretches from about 13 h 12 min at the start of May to 13 h 54 min by month's end. Set against the rest of the year, May is Green Valley's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Green Valley's year-round climate.
- Daytime high
- 87°
- 5th warmest
- Overnight low
- 58°
- 8th coldest
- Rainfall
- 0.1 in
- 1.1 wet days
- Daylight
- 13 h 36 min
- 5:32 AM – 7:09 PM
- Cloud cover
- 23%
- 2nd clearest
- Wind
- 7 mph
- 2nd windiest
- Solar energy
- 8.27 kWh/m²
- Travel score
- 6.4
- 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 May
Highs climb over the month, from about 83°F in the first days to 90°F by the end.
A typical May day in Green Valley reaches about 87°F in the afternoon and slips back to 58°F overnight — a 28°F spread between the day's warmth and the night's chill. On most days the high lands between 78°F and 94°F. Set against its neighbours, May runs about 9°F warmer than April and about 8°F cooler than June.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 83 | 83 | 83 | 83 | 84 | 84 | 84 | 84 | 85 | 85 | 85 | 85 | 86 | 86 | 86 | 86 | 87 | 87 | 87 | 87 | 88 | 88 | 88 | 88 | 89 | 89 | 89 | 90 | 90 | 91 | 91 |
| Avg low (°F) | 55 | 55 | 55 | 56 | 56 | 56 | 56 | 56 | 57 | 57 | 57 | 58 | 58 | 58 | 58 | 58 | 59 | 59 | 59 | 59 | 59 | 60 | 60 | 60 | 60 | 61 | 61 | 61 | 62 | 62 | 62 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 83 | 55 |
| 2 | 83 | 55 |
| 3 | 83 | 55 |
| 4 | 83 | 56 |
| 5 | 84 | 56 |
| 6 | 84 | 56 |
| 7 | 84 | 56 |
| 8 | 84 | 56 |
| 9 | 85 | 57 |
| 10 | 85 | 57 |
| 11 | 85 | 57 |
| 12 | 85 | 58 |
| 13 | 86 | 58 |
| 14 | 86 | 58 |
| 15 | 86 | 58 |
| 16 | 86 | 58 |
| 17 | 87 | 59 |
| 18 | 87 | 59 |
| 19 | 87 | 59 |
| 20 | 87 | 59 |
| 21 | 88 | 59 |
| 22 | 88 | 60 |
| 23 | 88 | 60 |
| 24 | 88 | 60 |
| 25 | 89 | 60 |
| 26 | 89 | 61 |
| 27 | 89 | 61 |
| 28 | 90 | 61 |
| 29 | 90 | 62 |
| 30 | 91 | 62 |
| 31 | 91 | 62 |
How May really feels in Green Valley
Once humidity and wind are folded in, May averages 4 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Green Valley weather by month
How May compares with the rest of the year at a glance. May is the 5th-warmest and 12th-wettest month here — the current month is highlighted below.
| 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 May
The sky is clear or mostly clear about 75% of the time in May.
Beyond those clear spells, partly cloudy skies cover about 11% of May, with mostly cloudy or overcast conditions the remaining 13%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 87 | 87 | 87 | 87 | 87 | 86 | 86 | 85 | 85 | 85 | 85 | 85 | 85 | 86 | 86 | 86 | 86 | 86 | 86 | 86 | 86 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 89 | 89 | 89 |
| Cloudier (%) | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 87 | 13 |
| 2 | 87 | 13 |
| 3 | 87 | 13 |
| 4 | 87 | 13 |
| 5 | 87 | 13 |
| 6 | 86 | 14 |
| 7 | 86 | 14 |
| 8 | 85 | 15 |
| 9 | 85 | 15 |
| 10 | 85 | 15 |
| 11 | 85 | 15 |
| 12 | 85 | 15 |
| 13 | 85 | 15 |
| 14 | 86 | 14 |
| 15 | 86 | 14 |
| 16 | 86 | 14 |
| 17 | 86 | 14 |
| 18 | 86 | 14 |
| 19 | 86 | 14 |
| 20 | 86 | 14 |
| 21 | 86 | 14 |
| 22 | 88 | 12 |
| 23 | 88 | 12 |
| 24 | 88 | 12 |
| 25 | 88 | 12 |
| 26 | 88 | 12 |
| 27 | 88 | 12 |
| 28 | 88 | 12 |
| 29 | 89 | 11 |
| 30 | 89 | 11 |
| 31 | 89 | 11 |
Chance of precipitation in May
Green Valley gets around 0.1 in of rain over 1.1 wet days in May, the driest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 4% and peaks near 5% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Rain chance (%) | |
|---|---|
| 1 | 3 |
| 2 | 2 |
| 3 | 2 |
| 4 | 2 |
| 5 | 2 |
| 6 | 2 |
| 7 | 2 |
| 8 | 3 |
| 9 | 3 |
| 10 | 3 |
| 11 | 3 |
| 12 | 4 |
| 13 | 4 |
| 14 | 4 |
| 15 | 4 |
| 16 | 4 |
| 17 | 4 |
| 18 | 4 |
| 19 | 4 |
| 20 | 5 |
| 21 | 5 |
| 22 | 5 |
| 23 | 5 |
| 24 | 4 |
| 25 | 4 |
| 26 | 4 |
| 27 | 4 |
| 28 | 4 |
| 29 | 4 |
| 30 | 4 |
| 31 | 4 |
Humidity in May
Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, May lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Dry (%) | |
|---|---|
| 1 | 100 |
| 2 | 100 |
| 3 | 100 |
| 4 | 100 |
| 5 | 100 |
| 6 | 100 |
| 7 | 100 |
| 8 | 100 |
| 9 | 100 |
| 10 | 100 |
| 11 | 100 |
| 12 | 100 |
| 13 | 100 |
| 14 | 100 |
| 15 | 100 |
| 16 | 100 |
| 17 | 100 |
| 18 | 100 |
| 19 | 100 |
| 20 | 100 |
| 21 | 100 |
| 22 | 100 |
| 23 | 100 |
| 24 | 100 |
| 25 | 100 |
| 26 | 100 |
| 27 | 100 |
| 28 | 100 |
| 29 | 100 |
| 30 | 100 |
| 31 | 100 |
Wind in May
Winds average 7 mph in May.
Across May, daily wind ranges from about 7 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 7 | calm |
| 2 | 7 | calm |
| 3 | 7 | calm |
| 4 | 7 | calm |
| 5 | 7 | calm |
| 6 | 7 | calm |
| 7 | 7 | calm |
| 8 | 7 | calm |
| 9 | 7 | calm |
| 10 | 7 | calm |
| 11 | 7 | calm |
| 12 | 7 | calm |
| 13 | 7 | calm |
| 14 | 7 | calm |
| 15 | 7 | calm |
| 16 | 7 | calm |
| 17 | 7 | calm |
| 18 | 7 | calm |
| 19 | 7 | calm |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | calm |
| 27 | 7 | calm |
| 28 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
| 31 | 7 | calm |
Sunrise & sunset in May
Daylight runs from about 13 h 12 min at the start of May to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 42 minutes over May. Sunrise moves from 5:44 AM to 5:24 AM, and sunset from 6:58 PM to 7:19 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 13.2 | 13.3 | 13.3 | 13.3 | 13.3 | 13.4 | 13.4 | 13.4 | 13.5 | 13.5 | 13.5 | 13.5 | 13.6 | 13.6 | 13.6 | 13.6 | 13.6 | 13.7 | 13.7 | 13.7 | 13.7 | 13.8 | 13.8 | 13.8 | 13.8 | 13.8 | 13.8 | 13.9 | 13.9 | 13.9 | 13.9 |
| Sunrise (AM) | 5:44 | 5:43 | 5:42 | 5:41 | 5:40 | 5:39 | 5:39 | 5:38 | 5:37 | 5:36 | 5:35 | 5:34 | 5:34 | 5:33 | 5:32 | 5:32 | 5:31 | 5:30 | 5:30 | 5:29 | 5:28 | 5:28 | 5:27 | 5:27 | 5:26 | 5:26 | 5:26 | 5:25 | 5:25 | 5:24 | 5:24 |
| Sunset (PM) | 6:58 | 6:59 | 7:00 | 7:00 | 7:01 | 7:02 | 7:02 | 7:03 | 7:04 | 7:05 | 7:05 | 7:06 | 7:07 | 7:07 | 7:08 | 7:09 | 7:10 | 7:10 | 7:11 | 7:12 | 7:12 | 7:13 | 7:14 | 7:14 | 7:15 | 7:16 | 7:16 | 7:17 | 7:17 | 7:18 | 7:19 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.2 | 5:44 | 6:58 |
| 2 | 13.3 | 5:43 | 6:59 |
| 3 | 13.3 | 5:42 | 7:00 |
| 4 | 13.3 | 5:41 | 7:00 |
| 5 | 13.3 | 5:40 | 7:01 |
| 6 | 13.4 | 5:39 | 7:02 |
| 7 | 13.4 | 5:39 | 7:02 |
| 8 | 13.4 | 5:38 | 7:03 |
| 9 | 13.5 | 5:37 | 7:04 |
| 10 | 13.5 | 5:36 | 7:05 |
| 11 | 13.5 | 5:35 | 7:05 |
| 12 | 13.5 | 5:34 | 7:06 |
| 13 | 13.6 | 5:34 | 7:07 |
| 14 | 13.6 | 5:33 | 7:07 |
| 15 | 13.6 | 5:32 | 7:08 |
| 16 | 13.6 | 5:32 | 7:09 |
| 17 | 13.6 | 5:31 | 7:10 |
| 18 | 13.7 | 5:30 | 7:10 |
| 19 | 13.7 | 5:30 | 7:11 |
| 20 | 13.7 | 5:29 | 7:12 |
| 21 | 13.7 | 5:28 | 7:12 |
| 22 | 13.8 | 5:28 | 7:13 |
| 23 | 13.8 | 5:27 | 7:14 |
| 24 | 13.8 | 5:27 | 7:14 |
| 25 | 13.8 | 5:26 | 7:15 |
| 26 | 13.8 | 5:26 | 7:16 |
| 27 | 13.8 | 5:26 | 7:16 |
| 28 | 13.9 | 5:25 | 7:17 |
| 29 | 13.9 | 5:25 | 7:17 |
| 30 | 13.9 | 5:24 | 7:18 |
| 31 | 13.9 | 5:24 | 7:19 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 8.27 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 — May's 8.27 kWh/m² sits near the top of that range.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 8.1 | 8.1 | 8.1 | 8.1 | 8.1 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 8.1 | Intense |
| 2 | 8.1 | Intense |
| 3 | 8.1 | Intense |
| 4 | 8.1 | Intense |
| 5 | 8.1 | Intense |
| 6 | 8.2 | Intense |
| 7 | 8.2 | Intense |
| 8 | 8.2 | Intense |
| 9 | 8.2 | Intense |
| 10 | 8.2 | Intense |
| 11 | 8.2 | Intense |
| 12 | 8.2 | Intense |
| 13 | 8.2 | Intense |
| 14 | 8.2 | Intense |
| 15 | 8.2 | Intense |
| 16 | 8.3 | Intense |
| 17 | 8.3 | Intense |
| 18 | 8.3 | Intense |
| 19 | 8.3 | Intense |
| 20 | 8.3 | Intense |
| 21 | 8.3 | Intense |
| 22 | 8.3 | Intense |
| 23 | 8.3 | Intense |
| 24 | 8.4 | Intense |
| 25 | 8.4 | Intense |
| 26 | 8.4 | Intense |
| 27 | 8.4 | Intense |
| 28 | 8.4 | Intense |
| 29 | 8.4 | Intense |
| 30 | 8.4 | Intense |
| 31 | 8.4 | Intense |
Is May a good time to visit Green Valley?
Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
May is a reasonable time to visit Green Valley for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Green Valley in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Green Valley sees daytime highs around 87°F and nights near 58°F. Pack light clothes and sun protection.
UV index in Green Valley in May
Clear-sky midday UV in May 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 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. 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).