Casas Adobes, Arizona climate: Normal weather by month, frost dates and records
Casas Adobes's normal year runs from 37°F January nights to 101°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 20.7°C, January lows of 3°C, July highs of 38°C.
- NOAA stationTohono Chul
- Station IDUSC00028590
- Location32.34°N 110.98°W
- Elevation2,527 ft (770 m)
- From the center2 miles
- Population (census place)70,770
On October 14, the normal high in Casas Adobes is 88°F and the normal low 57°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Casas Adobes.
- Jan 67° 37°
- Feb 70° 39°
- Mar 77° 44°
- Apr 84° 50°
- May 92° 59°
- Jun 102° 68°
- Jul 101° 74°
- Aug 100° 72°
- Sep 96° 67°
- Oct 88° 56°
- Nov 76° 44°
- Dec 67° 37°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Casas Adobes each month?
July is the warmest month, with normal highs of 101°F; January the coldest, with normal lows of 37°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 67°F | 37°F | 51.6°F | – | <1 | 7 | 10 h 10 min |
| February | 70°F | 39°F | 54.5°F | – | <1 | 5 | 11 h |
| March | 77°F | 44°F | 60.1°F | – | 2 | 1 | 12 h |
| April | 84°F | 50°F | 67.0°F | – | 9 | <1 | 13 h |
| May | 92°F | 59°F | 75.6°F | – | 19 | <1 | 13 h 50 min |
| June | 102°F | 68°F | 85.1°F | – | 30 | <1 | 14 h 20 min |
| July | 101°F | 74°F | 87.6°F | – | 30 | <1 | 14 h 10 min |
| August | 100°F | 72°F | 85.5°F | – | 30 | <1 | 13 h 20 min |
| September | 96°F | 67°F | 81.3°F | – | 25 | <1 | 12 h 20 min |
| October | 88°F | 56°F | 71.7°F | – | 13 | <1 | 11 h 30 min |
| November | 76°F | 44°F | 60.2°F | – | 2 | 1 | 10 h 30 min |
| December | 67°F | 37°F | 51.8°F | – | <1 | 7 | 10 h |
| Year (annual) | 85°F | 54°F | 69.3°F | – | 159 | 20 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 19°C | 3°C | 10.9°C |
| February | 21°C | 4°C | 12.5°C |
| March | 25°C | 6°C | 15.6°C |
| April | 29°C | 10°C | 19.4°C |
| May | 33°C | 15°C | 24.2°C |
| June | 39°C | 20°C | 29.5°C |
| July | 38°C | 23°C | 30.9°C |
| August | 38°C | 22°C | 29.7°C |
| September | 35°C | 19°C | 27.4°C |
| October | 31°C | 13°C | 22.1°C |
| November | 25°C | 7°C | 15.7°C |
| December | 19°C | 3°C | 11.0°C |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00028590; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Casas Adobes?
Normal highs sit between 65°F and 85°F in January, February, March, April, November and December.
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00028590.
When is the last frost in Casas Adobes?
In Casas Adobes, the last spring frost (32°F) comes after February 26 in half of years and after March 18 in one year in ten; the first autumn frost comes before December 4 in half of years and before November 17 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- February 261 year in 10 after March 18; 9 in 10 after January 29
- First autumn frost, half of years before
- December 41 year in 10 before November 17; 9 in 10 before December 19
NOAA puts the median frost-free season at 279 days, and the season without a hard freeze (28°F) at 320 days.
A hard freeze (28°F) comes after February 1 in half of springs and before December 17 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Casas Adobes in zones 9a to 9b across its 3 ZIP code areas (9a in 85704, the largest).
Frost dates for every NOAA station in Arizona · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00028590; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
What hardiness zone is each Casas Adobes ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Casas Adobes's 3 ZIP code areas run from zone 9a to 9b: 2 in 9a and 1 in 9b. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Casas Adobes?
In a normal year in Casas Adobes, 159 days a year reach 90°F (73 of them 100°F or more) and 20 nights fall to 32°F or colder.
- Days at 90°F or more
- 159a normal year
- Days at 100°F or more
- 73a normal year
- Nights at 32°F or colder
- 20a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00028590.
How sunny is Casas Adobes?
Over a year 89% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Casas Adobes, 5.8 kWh per square metre a day. June is the sunniest month (94%) and July the cloudiest (84%). Among the 459 U.S. places of 50,000 or more, that ranks tied 39th (with 12 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 86% | 3.6 |
| February | 85% | 4.5 |
| March | 89% | 6.0 |
| April | 93% | 7.4 |
| May | 94% | 8.2 |
| June | 94% | 8.3 |
| July | 84% | 6.9 |
| August | 86% | 6.5 |
| September | 88% | 5.9 |
| October | 92% | 5.1 |
| November | 89% | 3.9 |
| December | 85% | 3.3 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Casas Adobes need?
A normal year in Casas Adobes brings 1,546 heating degree days, 71% fewer than the median U.S. place (5,373), and 3,151 cooling degree days, 3.5 times the median (908). Two months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 7,240 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 415 | 0 |
| February | 296 | 2 |
| March | 173 | 20 |
| April | 53 | 113 |
| May | 5 | 332 |
| June | 0 | 601 |
| July | 0 | 700 |
| August | 0 | 635 |
| September | 0 | 489 |
| October | 19 | 226 |
| November | 175 | 31 |
| December | 409 | 1 |
| Year (annual) | 1,546 | 3,151 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00028590. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Casas Adobes been warmer than normal lately?
2022 averaged 70.0°F, 0.7°F above the 1991-2020 normal of 69.3°F.
| Year | Mean | Against normal |
|---|---|---|
| 2022 | 70.0°F | +0.7°F |
Source: observed years: ACIS, station USC00028590. A year counts only with all twelve months complete.
How does Casas Adobes's climate compare?
Casas Adobes is warmer than 64 of the other 96 places with their own NOAA record in Arizona. Across the 7,247 U.S. stations with normals, its annual mean of 69.3°F is warmer than 94%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Casas Adobes share this climate record?
2 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Catalina Foothills, AZalso near: Tucson U Of A #1 (8 mi, 70.3°F a year); Catalina (8 mi, 65.6°F a year)51,756 people · 6 mi SE
- Rillito, AZ0 people · 11 mi NW
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Casas Adobes's climate
What is the coldest month in Casas Adobes?
January, with a normal high of 67°F and a normal low of 37°F. The warmest is July (101°F by day, 74°F at night).
What plant hardiness zone is Casas Adobes in?
The USDA's 2023 map puts Casas Adobes in zones 9a to 9b across its 3 ZIP code areas (9a in 85704, the largest).
How late can frost come in Casas Adobes?
In half of years the last 32°F night comes after February 26; in one year in ten it comes after March 18. Waiting until March 18 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Arizona climateThe statewide normals and every place in the state
- Tucson U Of A #1, AZ6 miles from this station, 70.3°F a year
- Catalina, AZ6 miles from this station, 65.6°F a year
- Tucson, AZ14 miles from this station, 70.6°F a year
- Mount Lemmon Willow Canyon, AZ17 miles from this station, 55.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made