Yuma Proving Ground, Arizona climate: Normal weather by month, frost dates and records
Yuma Proving Ground's normal year runs from 43°F December nights to 106°F August afternoons, with 3.5 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 23.8°C, December lows of 6°C, August highs of 41°C, 90 mm of precipitation a year.
- NOAA stationYuma Proving Ground
- Station IDUSW00003125
- Location32.84°N 114.39°W
- Elevation324 ft (99 m)
- Population (census place)288
On October 23, the normal high in Yuma Proving Ground is 88°F and the normal low 60°F, and the chance of measurable rain or snow is 3%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Yuma Proving Ground.
- Jan 69° 45°
- Feb 73° 48°
- Mar 80° 53°
- Apr 86° 59°
- May 94° 66°
- Jun 103° 74°
- Jul 107° 82°
- Aug 106° 82°
- Sep 102° 76°
- Oct 90° 63°
- Nov 77° 51°
- Dec 67° 43°
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 Yuma Proving Ground each month?
August is the warmest month, with normal highs of 106°F; December the coldest, with normal lows of 43°F. The most precipitation falls in February (0.53 in), the least in June (0.01 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 69°F | 45°F | 56.9°F | 0.52 | 3 | <1 | 1 | 10 h 10 min |
| February | 73°F | 48°F | 60.3°F | 0.53 | 3 | <1 | <1 | 11 h |
| March | 80°F | 53°F | 66.4°F | 0.41 | 2 | 5 | <1 | 12 h |
| April | 86°F | 59°F | 72.3°F | 0.12 | 1 | 12 | <1 | 13 h |
| May | 94°F | 66°F | 80.0°F | 0.03 | 1 | 24 | <1 | 13 h 50 min |
| June | 103°F | 74°F | 88.6°F | 0.01 | <1 | 29 | <1 | 14 h 20 min |
| July | 107°F | 82°F | 94.3°F | 0.19 | 1 | 31 | <1 | 14 h 10 min |
| August | 106°F | 82°F | 94.4°F | 0.38 | 2 | 31 | <1 | 13 h 20 min |
| September | 102°F | 76°F | 88.8°F | 0.43 | 2 | 29 | <1 | 12 h 30 min |
| October | 90°F | 63°F | 76.7°F | 0.20 | 1 | 19 | <1 | 11 h 30 min |
| November | 77°F | 51°F | 64.2°F | 0.28 | 1 | 2 | <1 | 10 h 30 min |
| December | 67°F | 43°F | 55.1°F | 0.45 | 3 | <1 | 1 | 10 h |
| Year (annual) | 88°F | 62°F | 74.8°F | 3.55 | 18 | 181 | 2 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 21°C | 7°C | 13.8°C | 13 mm |
| February | 23°C | 9°C | 15.7°C | 13 mm |
| March | 27°C | 12°C | 19.1°C | 10 mm |
| April | 30°C | 15°C | 22.4°C | 3 mm |
| May | 35°C | 19°C | 26.7°C | 1 mm |
| June | 40°C | 23°C | 31.4°C | 0 mm |
| July | 42°C | 28°C | 34.6°C | 5 mm |
| August | 41°C | 28°C | 34.7°C | 10 mm |
| September | 39°C | 24°C | 31.6°C | 11 mm |
| October | 32°C | 17°C | 24.8°C | 5 mm |
| November | 25°C | 11°C | 17.9°C | 7 mm |
| December | 19°C | 6°C | 12.8°C | 11 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00003125; 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 Yuma Proving Ground?
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 USW00003125.
When is the last frost in Yuma Proving Ground?
In Yuma Proving Ground, the last spring frost (32°F) comes after January 4 in half of years and after February 9 in one year in ten; the first autumn frost comes before December 25 in half of years and before December 3 in one year in ten. A night at 32°F or colder comes at all in 57% of years here (NOAA).
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- January 41 year in 10 after February 9; 9 in 10 after December 11
- First autumn frost, half of years before
- December 251 year in 10 before December 3; 9 in 10 before January 25
NOAA puts the median frost-free season at 361 days, and the season without a hard freeze (28°F) at 365 days.
A hard freeze (28°F) comes after January 9 in half of springs and before January 9 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Yuma Proving Ground in zone 10a in ZIP code 92222, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Yuma Proving Ground's NOAA station is in zone 10a: the coldest night of a typical year reaches 31°F (27 complete years).
Frost dates for every NOAA station in Arizona · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00003125; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 in Yuma Proving Ground?
In a normal year in Yuma Proving Ground, 181 days a year reach 90°F (121 of them 100°F or more), 2 nights fall to 32°F or colder and 18 days bring measurable precipitation.
- Days at 90°F or more
- 181a normal year
- Days at 100°F or more
- 121a normal year
- Nights at 32°F or colder
- 2a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 18a normal year
The highest temperature in this station's record (since 1955) is 124°F, on July 28, 1995; the lowest is 23°F, on January 8, 1971.
The wettest calendar year on that record is 1992, with 10.27 in.
Source: NOAA NCEI 1991-2020 annual normals, station USW00003125; records: ACIS (NOAA Regional Climate Centers), station USW00003125. Records use complete months only; a month missing more than three days is left out.
How sunny is Yuma Proving Ground?
Over a year 94% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Yuma Proving Ground, 6.0 kWh per square metre a day. June is the sunniest month (97%) and December the cloudiest (88%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 90% | 3.6 |
| February | 89% | 4.6 |
| March | 92% | 6.0 |
| April | 95% | 7.4 |
| May | 96% | 8.2 |
| June | 97% | 8.4 |
| July | 94% | 7.7 |
| August | 95% | 7.2 |
| September | 95% | 6.3 |
| October | 95% | 5.1 |
| November | 92% | 3.9 |
| December | 88% | 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 Yuma Proving Ground need?
A normal year in Yuma Proving Ground brings 883 heating degree days, 84% fewer than the median U.S. place (5,373), and 4,502 cooling degree days, 5.0 times the median (908). One month needs 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 9,116 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 252 | 2 |
| February | 149 | 18 |
| March | 61 | 104 |
| April | 14 | 233 |
| May | 1 | 465 |
| June | 0 | 707 |
| July | 0 | 908 |
| August | 0 | 911 |
| September | 0 | 715 |
| October | 4 | 367 |
| November | 95 | 71 |
| December | 306 | 1 |
| Year (annual) | 883 | 4,502 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00003125. 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 Yuma Proving Ground been warmer than normal lately?
2025 averaged 75.2°F, 0.4°F above the 1991-2020 normal of 74.8°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 75.8°F | +1.0°F | 2.16 |
| 2022 | 75.1°F | +0.3°F | 2.32 |
| 2023 | 74.1°F | −0.7°F | 3.21 |
| 2024 | 75.4°F | +0.6°F | 2.13 |
| 2025 | 75.2°F | +0.4°F | 5.37 |
Over 63 complete years from 1955 to 2025, the station's annual mean temperature rose at a fitted 3.5°F per century (+0.20°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USW00003125; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Yuma Proving Ground's climate compare?
Yuma Proving Ground is warmer than 94 of the other 96 places with their own NOAA record in Arizona, and wetter than 1. Across the 7,247 U.S. stations with normals, its annual mean of 74.8°F is warmer than 99%.
In the Köppen classification computed from these normals, Yuma Proving Ground 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 Yuma Proving Ground 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.
- Fortuna Foothills, AZ28,227 people · 12 mi S
- Martinez Lake, AZ57 people · 11 mi NW
- Buckshot, AZ12 people · 8 mi SW
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 Yuma Proving Ground's climate
What is the coldest month in Yuma Proving Ground?
December, with a normal high of 67°F and a normal low of 43°F. The warmest is August (106°F by day, 82°F at night).
Does it snow in Yuma Proving Ground?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month in Yuma Proving Ground?
February, with 0.53 in of precipitation in a normal year; the driest is June with 0.01 in.
What plant hardiness zone is Yuma Proving Ground in?
The USDA's 2023 map puts Yuma Proving Ground in zone 10a in ZIP code 92222, the nearest ZIP area. By the same method at Yuma Proving Ground's NOAA station, the coldest night of a typical year reaches 31°F (27 years, 1991-2020): zone 10a.
How late can frost come in Yuma Proving Ground?
In half of years the last 32°F night comes after January 4; in one year in ten it comes after February 9. Waiting until February 9 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Arizona climateThe statewide normals and every place in the state
- Yuma (27 mi ENE), AZ12 miles from this station, 73.2°F a year
- Yuma, AZ18 miles from this station, 75.9°F a year
- Tacna, AZ29 miles from this station, 73.1°F a year
- Kofa Mine, AZ39 miles from this station, 74.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made