Painted Rock Dam, Arizona climate: Climate normals at a NOAA weather station
Painted Rock Dam's normal year runs from 40°F December nights to 108°F July afternoons, with 6.1 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 23.3°C, December lows of 4°C, July highs of 42°C, 155 mm of precipitation a year.
- NOAA stationPainted Rock Dam
- Station IDUSC00026194
- Location33.08°N 113.03°W
- Elevation568 ft (173 m)
On October 23, the normal high in Painted Rock Dam is 88°F and the normal low 56°F, and the chance of measurable rain or snow is 4%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Painted Rock Dam.
- Jan 69° 41°
- Feb 73° 45°
- Mar 80° 50°
- Apr 87° 57°
- May 95° 64°
- Jun 105° 73°
- Jul 108° 82°
- Aug 107° 81°
- Sep 102° 74°
- Oct 91° 59°
- Nov 78° 47°
- Dec 69° 40°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Painted Rock Dam each month?
July is the warmest month, with normal highs of 108°F; December the coldest, with normal lows of 40°F. The most precipitation falls in July (0.92 in), the least in June (0.01 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 69°F | 41°F | 55.0°F | 0.69 | 2 | <1 | 3 | 10 h 10 min |
| February | 73°F | 45°F | 58.6°F | 0.46 | 2 | <1 | 1 | 11 h |
| March | 80°F | 50°F | 65.1°F | 0.64 | 1 | 6 | <1 | 12 h |
| April | 87°F | 57°F | 71.9°F | 0.16 | 1 | 13 | <1 | 13 h |
| May | 95°F | 64°F | 79.8°F | 0.16 | <1 | 24 | <1 | 13 h 50 min |
| June | 105°F | 73°F | 89.0°F | 0.01 | <1 | 30 | <1 | 14 h 20 min |
| July | 108°F | 82°F | 94.6°F | 0.92 | 3 | 31 | <1 | 14 h 10 min |
| August | 107°F | 81°F | 94.0°F | 0.85 | 3 | 31 | <1 | 13 h 20 min |
| September | 102°F | 74°F | 87.7°F | 0.43 | 2 | 29 | <1 | 12 h 30 min |
| October | 91°F | 59°F | 75.2°F | 0.49 | 2 | 19 | <1 | 11 h 20 min |
| November | 78°F | 47°F | 62.7°F | 0.61 | 1 | 3 | <1 | 10 h 30 min |
| December | 69°F | 40°F | 54.0°F | 0.67 | 2 | <1 | 4 | 10 h |
| Year (annual) | 89°F | 59°F | 74.0°F | 6.09 | 20 | 186 | 9 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 21°C | 5°C | 12.8°C | 18 mm |
| February | 23°C | 7°C | 14.8°C | 12 mm |
| March | 27°C | 10°C | 18.4°C | 16 mm |
| April | 31°C | 14°C | 22.2°C | 4 mm |
| May | 35°C | 18°C | 26.6°C | 4 mm |
| June | 41°C | 23°C | 31.7°C | 0 mm |
| July | 42°C | 28°C | 34.8°C | 23 mm |
| August | 41°C | 27°C | 34.4°C | 22 mm |
| September | 39°C | 23°C | 30.9°C | 11 mm |
| October | 33°C | 15°C | 24.0°C | 12 mm |
| November | 26°C | 9°C | 17.1°C | 15 mm |
| December | 20°C | 4°C | 12.2°C | 17 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00026194; 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.
Which months are mildest at Painted Rock Dam?
Normal highs sit between 65°F and 85°F in January, February, March, November and December. Of those, November has the fewest days with rain (1).
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 USC00026194.
When is the last frost at Painted Rock Dam?
In Painted Rock Dam, the last spring frost (32°F) comes after January 21 in half of years and after February 18 in one year in ten; the first autumn frost comes before December 15 in half of years and before November 27 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
- January 211 year in 10 after February 18; 9 in 10 after December 24
- First autumn frost, half of years before
- December 151 year in 10 before November 27; 9 in 10 before January 4
NOAA puts the median frost-free season at 327 days, and the season without a hard freeze (28°F) at 362 days.
A hard freeze (28°F) comes after January 8 in half of springs and before December 28 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Painted Rock Dam in zone 9b in ZIP code 85322, the nearest ZIP area.
Frost dates for every NOAA station in Arizona · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00026194; 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.
How hot and how cold does it get at Painted Rock Dam?
In a normal year in Painted Rock Dam, 186 days a year reach 90°F (122 of them 100°F or more), 9 nights fall to 32°F or colder and 20 days bring measurable precipitation.
- Days at 90°F or more
- 186a normal year
- Days at 100°F or more
- 122a normal year
- Nights at 32°F or colder
- 9a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 20a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00026194.
How sunny is it at Painted Rock Dam?
Over a year 93% of the sunlight that would reach the ground under clear skies gets through the clouds at Painted Rock Dam, 5.9 kWh per square metre a day. June is the sunniest month (97%) and December the cloudiest (87%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 88% | 3.5 |
| February | 88% | 4.5 |
| March | 91% | 5.9 |
| April | 94% | 7.3 |
| May | 96% | 8.2 |
| June | 97% | 8.5 |
| July | 92% | 7.5 |
| August | 93% | 7.0 |
| September | 94% | 6.2 |
| October | 94% | 5.0 |
| November | 92% | 3.8 |
| December | 87% | 3.1 |
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 many heating and cooling degree days does Painted Rock Dam record?
A normal year at Painted Rock Dam brings 1,063 heating degree days, 80% fewer than the median U.S. place (5,373), and 4,366 cooling degree days, 4.8 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 8,825 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 311 | 1 |
| February | 189 | 10 |
| March | 80 | 82 |
| April | 12 | 220 |
| May | 0 | 459 |
| June | 0 | 720 |
| July | 0 | 918 |
| August | 0 | 899 |
| September | 0 | 681 |
| October | 8 | 322 |
| November | 123 | 54 |
| December | 340 | 1 |
| Year (annual) | 1,063 | 4,366 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00026194. 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.
Have recent years at Painted Rock Dam been warmer than normal?
2022 averaged 74.8°F, 0.8°F above the 1991-2020 normal of 74.0°F.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 74.8°F | +0.8°F | 4.68 |
Source: observed years: ACIS, station USC00026194. A year counts only with all twelve months complete.
How does Painted Rock Dam's climate compare?
Painted Rock Dam is warmer than 90 of the 97 places with their own NOAA record in Arizona, and wetter than 9. Across the 7,247 U.S. stations with normals, its annual mean of 74.0°F is warmer than 98%.
In the Köppen classification computed from these normals, Painted Rock Dam is BWh: hot desert. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Painted Rock Dam share this climate record?
3 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.
- Wintersburg, AZ110 people · 25 mi N
- Arlington, AZ60 people · 23 mi NE
- Tonopah, AZ14 people · 29 mi N
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 Painted Rock Dam's climate
What is the coldest month at Painted Rock Dam?
December, with a normal high of 69°F and a normal low of 40°F. The warmest is July (108°F by day, 82°F at night).
Does it snow at Painted Rock Dam?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month at Painted Rock Dam?
July, with 0.92 in of precipitation in a normal year; the driest is June with 0.01 in.
What plant hardiness zone is Painted Rock Dam in?
The USDA's 2023 map puts Painted Rock Dam in zone 9b in ZIP code 85322, the nearest ZIP area.
How late can frost come at Painted Rock Dam?
In half of years the last 32°F night comes after January 21; in one year in ten it comes after February 18. Waiting until February 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
- Gila Bend, AZ22 miles from this station, 74.7°F a year
- Dateland, AZ28 miles from this station, 72.5°F a year
- Litchfield Park, AZ48 miles from this station, 73.3°F a year
- Ajo, AZ50 miles from this station, 73.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made