E Mesa, AZ Climate: Temperature & Rain by Month
Average temperature and precipitation from NOAA NCEI 1991–2020 normals →, with a derived climate comfort score
30-year climate normals (1991-2020) from E Mesa's primary NOAA station, E MESA.
The climate verdict for E Mesa
E Mesa, Arizona is cooling-led and dry. Its 10.8 inches of annual precipitation pairs with an annual average of 72°F. It scores 88/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 89% of them.
- 72°F
- average temperature, NOAA 1991-2020 normal
- 88/100
- comfort score, above 89% of station-mapped location scores
- 10.8"
- precipitation, annual total
- 312 days
- frost-free days per growing season
E Mesa: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00022782 · E Mesa, AZ 72°F mean · 10.8" precip
TEMP-HOT · RANK-WARM · PHOTO-FINISH · PRCP-ARID · SWING-MID · COMF-TOP · LOAD-COOL · STN-1 · BOOK-FULL
- TEMP-HOT 72°F
- RANK-WARM #6,655
- PHOTO-FINISH ≈ Picacho
- PRCP-ARID 10.8"
- SWING-MID 39°F
- COMF-TOP 88/100
- LOAD-COOL 3,931 CDD
- STN-1 USC00022782
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Picacho, AZ (+ 0.1 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every AZ station list.
- Hot Phoenix Deer Va…, AZ 73°F
- E Mesa (this station) 72°F
- Cold Fountain Hills, AZ 72°F
- Near Picacho, AZ 72°F
- Near Casa Grande, AZ 72°F
Climate Living Index · E Mesa
E Mesa: 57/100 · grade C
E Mesa publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for E Mesa, not an official NOAA rating. Rankings still use Comfort Score 88/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Frost-free season | 312 days/year | 100/100 · A |
| Annual temperature balance | 72.2°F · 4.7° from 67.5°F | 86/100 · A |
| Normal heat + freeze calendar | 164 calendar days | 36/100 · F |
| Precipitation balance | 10.8 in · 24.2 from 35 in | 15/100 · F |
E Mesa · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
E Mesa's normals sit in a dry climate class: BWh
Annual precipitation falls well below the aridity threshold for this temperature regime, so the normals classify as hot desert (BWh). Class BWh is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: dry (arid or semi-arid), specifically hot desert.
- Köppen code
- BWh
- Group
- Dry (arid or semi-arid)
- Warmest month
- 92.4°F
- Coldest month
- 53.1°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · cooling-led station
Where E Mesa sits across the climate record
Three NOAA fields for E Mesa's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 3% warmest
- Among 6,861 stations, E Mesa sits in the warmer third of annual means.
- Annual precipitation
- Drier than 92%
- E Mesa's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- 33rd percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How E Mesa compares across U.S. station-mapped locations
E Mesa's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
88 Top 11% score exceeds 89% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). Below this entry.
- 70–80: 650 station-mapped locations (11%). Below this entry.
- 80–90: 921 station-mapped locations (15%). This entry sits in this band.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 68°F (20°C) | 41°F (5°C) | 54°F (12°C) | 1.4" | 3.3 | 0.0 |
| February | 70°F (21°C) | 43°F (6°C) | 56°F (14°C) | 1.5" | 2.6 | 0.0 |
| March | 77°F (25°C) | 48°F (9°C) | 62°F (17°C) | 1.3" | 0.1 | 2.8 |
| April | 85°F (30°C) | 53°F (12°C) | 69°F (21°C) | 0.4" | 0.0 | 10.9 |
| May | 94°F (35°C) | 62°F (16°C) | 78°F (26°C) | 0.2" | 0.0 | 23.8 |
| June | 104°F (40°C) | 71°F (22°C) | 87°F (31°C) | 0.1" | 0.0 | 29.8 |
| July | 106°F (41°C) | 79°F (26°C) | 92°F (34°C) | 1.2" | 0.0 | 30.9 |
| August | 105°F (40°C) | 78°F (26°C) | 92°F (33°C) | 1.3" | 0.0 | 30.8 |
| September | 100°F (38°C) | 71°F (22°C) | 86°F (30°C) | 1.1" | 0.0 | 28.5 |
| October | 90°F (32°C) | 59°F (15°C) | 74°F (24°C) | 0.6" | 0.0 | 16.7 |
| November | 77°F (25°C) | 48°F (9°C) | 62°F (17°C) | 0.8" | 0.5 | 2.2 |
| December | 66°F (19°C) | 40°F (5°C) | 53°F (12°C) | 1.1" | 4.5 | 0.0 |
The year, day by day
The year in E Mesa runs from a mild 40°F around December 16 to 107°F at the peak near July 1, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from May 4 through October 14, covering 164 dates. The broader mild season, normal highs of 70°F or more, runs February 16 to November 29.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 40°F around December 16.
Where the wet dates fall
The likeliest wet date is July 30, when 18% of years recorded at least a hundredth of an inch. The driest is June 9 at 3%. Summed across the calendar, that is about 36 wet dates a year.
The widest day
June 6 carries the biggest normal gap between afternoon and dawn, 35°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for E Mesa.
Where E Mesa Stands Nationally
Summers here run among the most heat-heavy normals calendars in the country: on about 164 days a year the normal daily high itself reaches 90°F — a count fewer than one station in ten exceeds.
Aridity defines the water calendar: about 11 inches in a normal year lands this among the driest tenth of ranked stations.
E Mesa earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall
4.1 days with precipitation
3.7 days with precipitation
2.6 days with precipitation
1.5 days with precipitation
1.1 days with precipitation
0.7 days with precipitation
4.8 days with precipitation
5.2 days with precipitation
3.3 days with precipitation
2.4 days with precipitation
2.3 days with precipitation
4.6 days with precipitation
E Mesa's wet season runs through the cold months
December, January and February carry 37% of the year's precipitation here, while June through August contribute 23%. That is the cool-season-dominant pattern of the West Coast and the higher inland West, where storm tracks swing south in winter and summer turns dry; the thermometer meanwhile shows a 39.3°F seasonal spread.
- Wettest month
- February, 1.5"
- Driest month
- June, 0.1"
- Wettest three months
- February, January, March (38% of the year)
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A cool-season label means the December-February share reaches 35%. Where snow falls, the monthly figures above report liquid-equivalent precipitation, so a wet winter month is not necessarily a rainy one.
How E Mesa's precipitation splits across the calendar
About 36 days a year record measurable precipitation here, carrying 10.8" between them, or roughly 0.30 inches on a typical wet day. That sits in the middle band: neither the many-light-days pattern of the Pacific Northwest and the Great Lakes, nor the few-heavy-events pattern of the Gulf and the desert Southwest.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
Frost Dates & Growing Season
First Fall Freeze
December 10
50% probability date
Last Spring Freeze
February 1
50% probability date
Growing Season
312 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,253
Higher = more heating needed
Cooling Degree Days
3,931
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside AZ closest to E Mesa on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (72°F here).
- Arcadia, FL 72°F · 0.0°F off
- Falfurrias, TX 72°F · 0.0°F off
- Charlotte, TX 72°F · 0.1°F off
- Benavides, TX 72°F · 0.1°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (10.8" here), excluding temperature-peer places.
- Joplin, MT 10.8" · 0.0" off
- Paul, ID 10.8" · 0.0" off
- Castleford, ID 10.7" · 0.0" off
- Hazelton, ID 10.7" · 0.0" off
Scarce-water calendar
Where E Mesa's limited precipitation lands
cooling led · dry · mid swing
Air-conditioning demand is the clearest thermal signal here. E Mesa accumulates 3,931 cooling degree days, more than twice its 1,253 heating total; the monthly table shows when that imbalance builds rather than treating it as a year-round condition.
Heat demand sits beside limited local precipitation: E Mesa receives 10.8 inches in a normal year, inside PlainClimate's dry range. Snowfall is not added to the interpretation because its annual value is missing. Month-level precipitation is the useful check on when that small annual total arrives.
July and December mark the typical warm and cold ends of the calendar in E Mesa's middle-range seasonal profile. The measured spread is 39.3°F. The annual average is 72°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
E Mesa has a long frost-free window of roughly 312 days, but the dry annual profile is a separate constraint. Growing-season length says when freezes are unlikely, not whether rainfall is sufficient.
E Mesa wettest normal
February
February concentrates the scarce annual total (10.8 inches).
E Mesa driest normal
June
June is typically driest; arid stations are defined by when water is absent, not by a four-season grid.
Questions about E Mesa's climate
How dry is E Mesa? ▼
How many days above 90°F does E Mesa get? ▼
How much energy does heating and cooling require in E Mesa? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from E Mesa's primary station: E MESA (USC00022782). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for E Mesa; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for E Mesa comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.