Eloy, Arizona climate: Normal weather by month, frost dates and records
Eloy's normal year runs from 35°F December nights to 107°F July afternoons, with 8.3 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 21.6°C, December lows of 2°C, July highs of 42°C, 210 mm of precipitation a year.
- NOAA stationEloy (4 mi NE)
- Station IDUSC00022807
- Location32.78°N 111.52°W
- Elevation1,545 ft (471 m)
- Population19,199
On October 23, the normal high in Eloy is 88°F and the normal low 52°F, and the chance of measurable rain or snow is 7%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Eloy.
- Jan 70° 36°
- Feb 72° 38°
- Mar 80° 43°
- Apr 88° 49°
- May 97° 57°
- Jun 107° 66°
- Jul 107° 74°
- Aug 105° 74°
- Sep 101° 68°
- Oct 91° 55°
- Nov 78° 42°
- Dec 69° 35°
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 Eloy each month?
July is the warmest month, with normal highs of 107°F; December the coldest, with normal lows of 35°F. The most precipitation falls in August (1.57 in), the least in April (0.14 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 70°F | 36°F | 52.9°F | 0.93 | 3 | <1 | 9 | 10 h 10 min |
| February | 72°F | 38°F | 55.3°F | 1.29 | 4 | <1 | 4 | 11 h |
| March | 80°F | 43°F | 61.4°F | 0.73 | 2 | 4 | 1 | 12 h |
| April | 88°F | 49°F | 68.7°F | 0.14 | 1 | 15 | <1 | 13 h |
| May | 97°F | 57°F | 76.9°F | 0.24 | 1 | 27 | <1 | 13 h 50 min |
| June | 107°F | 66°F | 86.2°F | 0.18 | 1 | 30 | <1 | 14 h 20 min |
| July | 107°F | 74°F | 90.8°F | 0.78 | 2 | 31 | <1 | 14 h 10 min |
| August | 105°F | 74°F | 89.5°F | 1.57 | 4 | 31 | <1 | 13 h 20 min |
| September | 101°F | 68°F | 84.4°F | 0.58 | 2 | 30 | <1 | 12 h 30 min |
| October | 91°F | 55°F | 73.1°F | 0.36 | 2 | 19 | <1 | 11 h 30 min |
| November | 78°F | 42°F | 60.4°F | 0.54 | 2 | 1 | 4 | 10 h 30 min |
| December | 69°F | 35°F | 51.9°F | 0.91 | 3 | <1 | 13 | 10 h |
| Year (annual) | 89°F | 53°F | 70.9°F | 8.25 | 25 | 186 | 32 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 21°C | 2°C | 11.6°C | 24 mm |
| February | 22°C | 3°C | 12.9°C | 33 mm |
| March | 26°C | 6°C | 16.3°C | 19 mm |
| April | 31°C | 9°C | 20.4°C | 4 mm |
| May | 36°C | 14°C | 24.9°C | 6 mm |
| June | 41°C | 19°C | 30.1°C | 5 mm |
| July | 42°C | 24°C | 32.7°C | 20 mm |
| August | 40°C | 23°C | 31.9°C | 40 mm |
| September | 38°C | 20°C | 29.1°C | 15 mm |
| October | 33°C | 13°C | 22.8°C | 9 mm |
| November | 26°C | 6°C | 15.8°C | 14 mm |
| December | 21°C | 2°C | 11.1°C | 23 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00022807; 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 Eloy?
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 (2).
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 USC00022807.
When is the last frost in Eloy?
In Eloy, the last spring frost (32°F) comes after February 24 in half of years and after March 18 in one year in ten; the first autumn frost comes before November 28 in half of years and before November 11 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 241 year in 10 after March 18; 9 in 10 after January 30
- First autumn frost, half of years before
- November 281 year in 10 before November 11; 9 in 10 before December 13
NOAA puts the median frost-free season at 273 days, and the season without a hard freeze (28°F) at 308 days.
A hard freeze (28°F) comes after February 3 in half of springs and before December 8 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Eloy in zone 9a across its 2 ZIP code areas (9a in 85131, 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 USC00022807; 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 Eloy ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Eloy's 2 ZIP code areas are all in zone 9a. 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 Eloy?
In a normal year in Eloy, 186 days a year reach 90°F (122 of them 100°F or more), 32 nights fall to 32°F or colder and 25 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
- 32a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 25a normal year
The highest temperature in this station's record (since 1951) is 119°F, on June 26, 1990; the lowest is 13°F, on January 4, 1971.
The wettest calendar year on that record is 1993, with 21.87 in.
Source: NOAA NCEI 1991-2020 annual normals, station USC00022807; records: ACIS (NOAA Regional Climate Centers), station USC00022807. Records use complete months only; a month missing more than three days is left out.
How sunny is Eloy?
Over a year 92% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Eloy, 5.9 kWh per square metre a day. June is the sunniest month (96%) and December the cloudiest (86%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 87% | 3.6 |
| February | 87% | 4.6 |
| March | 91% | 6.0 |
| April | 94% | 7.4 |
| May | 95% | 8.2 |
| June | 96% | 8.4 |
| July | 88% | 7.2 |
| August | 90% | 6.7 |
| September | 92% | 6.1 |
| October | 94% | 5.1 |
| November | 91% | 3.9 |
| December | 86% | 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 Eloy need?
A normal year in Eloy brings 1,432 heating degree days, 73% fewer than the median U.S. place (5,373), and 3,632 cooling degree days, 4.0 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 7,759 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 375 | 0 |
| February | 273 | 2 |
| March | 148 | 38 |
| April | 37 | 146 |
| May | 3 | 373 |
| June | 0 | 636 |
| July | 0 | 798 |
| August | 0 | 758 |
| September | 0 | 580 |
| October | 19 | 270 |
| November | 169 | 30 |
| December | 408 | 0 |
| Year (annual) | 1,432 | 3,632 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00022807. 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.
How does Eloy's climate compare?
Eloy is warmer than 70 of the other 96 places with their own NOAA record in Arizona, and wetter than 27. Across the 7,247 U.S. stations with normals, its annual mean of 70.9°F is warmer than 96%.
In the Köppen classification computed from these normals, Eloy 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.
Questions about Eloy's climate
What is the coldest month in Eloy?
December, with a normal high of 69°F and a normal low of 35°F. The warmest is July (107°F by day, 74°F at night).
Does it snow in Eloy?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month in Eloy?
August, with 1.57 in of precipitation in a normal year; the driest is April with 0.14 in.
What plant hardiness zone is Eloy in?
The USDA's 2023 map puts Eloy in zone 9a across its 2 ZIP code areas (9a in 85131, the largest).
How late can frost come in Eloy?
In half of years the last 32°F night comes after February 24; 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
- Robson Ranch, AZ7 miles from this station, 71.3°F a year
- Arizona City, AZ11 miles from this station, 68.9°F a year
- Picacho, AZ12 miles from this station, 72.3°F a year
- Casa Grande, AZ14 miles from this station, 72.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made