Catalina Foothills, Arizona climate: NOAA's gridded normals for the city, beside the nearest station records
NOAA's gridded 1991-2020 normals put Catalina Foothills's center at January lows of 39°F and July highs of 100°F, a yearly mean of 69.1°F and 12.2 inches of precipitation. No NOAA station keeps a record under the city's name. The nearest station record, Casas Adobes (6 miles NW, 2,527 ft), has January lows of 37°F and July highs of 101°F.
51,756 people (Census Bureau 2024). Distances and directions are from the city's center.
- Jan 66° 39°
- Feb 68° 41°
- Mar 74° 46°
- Apr 82° 51°
- May 91° 59°
- Jun 100° 69°
- Jul 100° 74°
- Aug 98° 73°
- Sep 94° 68°
- Oct 85° 57°
- Nov 74° 45°
- Dec 65° 39°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
The months above are NOAA's gridded normals at Catalina Foothills's center.
What is each month like in Catalina Foothills?
NOAA's grid estimates the normals every 5 km or so from the stations around each point, terrain included. It smooths between stations, so night lows at the heart of a large city can run warmer than the grid shows: at five big-city airports we compared, the grid's highs were within about 1°F of the station and its lows 1-6°F cooler. The nearest record's high and low are beside each month.
| Month | High | Low | Mean | Precip. | Casas Adobes high | Casas Adobes low |
|---|---|---|---|---|---|---|
| January | 66°F | 39°F | 52.2°F | 1.18 | 67°F | 37°F |
| February | 68°F | 41°F | 54.7°F | 1.12 | 70°F | 39°F |
| March | 74°F | 46°F | 60.0°F | 0.80 | 77°F | 44°F |
| April | 82°F | 51°F | 66.3°F | 0.31 | 84°F | 50°F |
| May | 91°F | 59°F | 74.8°F | 0.20 | 92°F | 59°F |
| June | 100°F | 69°F | 84.5°F | 0.21 | 102°F | 68°F |
| July | 100°F | 74°F | 86.9°F | 2.07 | 101°F | 74°F |
| August | 98°F | 73°F | 85.7°F | 2.26 | 100°F | 72°F |
| September | 94°F | 68°F | 81.3°F | 1.36 | 96°F | 67°F |
| October | 85°F | 57°F | 71.1°F | 0.66 | 88°F | 56°F |
| November | 74°F | 45°F | 59.7°F | 0.73 | 76°F | 44°F |
| December | 65°F | 39°F | 51.7°F | 1.26 | 67°F | 37°F |
In metric: a yearly mean of 20.6°C, January lows of 4°C, July highs of 38°C and 309 mm of precipitation a year.
Source: NOAA NCEI U.S. Monthly Gridded Climate Normals 1991-2020 (nClimGrid, accession 0245564); NOAA NCEI 1991-2020 station normals. The grid cell holding the city's Census center point.
What do the station records around Catalina Foothills say?
Each row is a NOAA station's own 1991-2020 normals, with the snow and frost dates the grid does not give. A record downhill or nearer the coast than the city can run warmer, one uphill cooler: compare the elevations.
| Record | Where | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Casas AdobesTohono Chul | 6 mi NW | 2,527 ft | 69.3°F | 37°F | 101°F | – | – | February 26 |
| Tucson U Of A #1 | 8 mi SW | 2,315 ft | 70.3°F | 39°F | 101°F | 10.8 | 0 | February 11 |
| CatalinaCatalina State Park | 8 mi N | 2,707 ft | 65.6°F | 31°F | 100°F | 13.2 | – | April 2 |
Source: NOAA NCEI 1991-2020 U.S. Climate Normals; place center and population: Census Bureau 2024. Last frost: the median last spring date of 32°F.
How much snow, how late a frost, what zone and how much sun in Catalina Foothills?
NOAA's grid gives no snow, frost dates or records, so these come from the nearest station record, Casas Adobes (6 miles NW, 2,527 ft). NOAA publishes no snowfall normal for it; the nearest record that has one, Tucson U Of A #1 (8 miles SW), gets 0 inches a year. The last spring frost (32°F) comes after February 26 in half of years and the first autumn frost before December 4.
The USDA's 2023 Plant Hardiness Zone Map puts Catalina Foothills in zones 9a to 9b across its 3 ZIP code areas.
Over a year 89% of the sunlight that would reach the ground under clear skies gets through the clouds in the area (5.8 kWh per square metre a day, NASA POWER 2001-2020); June is the sunniest month (94%) and July the cloudiest (84%).
Casas Adobes's page has its months, frost probabilities, records by month and recent years. NOAA's grid has monthly figures only, so there are no day-by-day month pages for Catalina Foothills; the nearest record's month pages have them.
Source: NOAA NCEI 1991-2020 normals, station USC00028590; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; sunshine: NASA POWER.
How does the climate vary across Catalina Foothills, ZIP code by ZIP code?
3 ZIP code areas lie wholly or partly in Catalina Foothills. On NOAA's grid 85718 is the warmest (69.4°F a year) and 85750 the coolest (68.8°F), a spread of 0.6°F. Each row also names the nearest station record and its frost dates.
| ZIP code | Zone | Year | Jan low | Jul high | Precip. | Nearest record | Last frost | First frost |
|---|---|---|---|---|---|---|---|---|
| 85715 | 9b | 69.2°F | 38°F | 100°F | 11.6 | Saguaro National Park (7 mi) | January 26 | December 16 |
| 85718 | 9a | 69.4°F | 39°F | 100°F | 11.5 | Casas Adobes (4 mi) | February 26 | December 4 |
| 85750 | 9a | 68.8°F | 38°F | 100°F | 12.4 | Casas Adobes (8 mi) | February 26 | December 4 |
Source: Census Bureau 2020 ZCTA-to-place relationship file and ZCTA centers; NOAA NCEI gridded and station normals, 1991-2020. A ZIP area counts when at least a tenth of its land (and 0.5 km²) is in the city; its figures are the grid cell at its center; frost dates are the nearest record's medians of 32°F.