Diamond M Rch, AZ Climate: Temperature & Rain by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Diamond M Rch's primary NOAA station, DIAMOND M RCH.
The climate verdict for Diamond M Rch
Dryness leads the climate profile for Diamond M Rch, Arizona, with 15.3 inches of precipitation a year. NOAA records an annual average of 53°F. At 49/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 18% of scores.
- 53°F
- yearly average temperature, NOAA normal
- 49/100
- comfort score, above 18% of station-mapped location scores
- 15.3"
- annual precipitation · 21" snow
- 146 days
- frost-free growing season
Diamond M Rch: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00022527 · Diamond M Rch, AZ 53°F mean · 15.3" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 53°F
- RANK-MID #3,705
- PHOTO-FINISH ≈ Corona
- PRCP-DRY 15.3"
- SWING-MID 37°F
- COMF-LOW 49/100
- LOAD-HEAT 4,879 HDD
- STN-1 USC00022527
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Corona, NM (+ 0 °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 Snowflake, AZ 54°F
- Near Sparks, NV 54°F
- Diamond M Rch (this station) 53°F
- Near Corona, NM 53°F
- Near Mtn City, TN 53°F
Climate Living Index · Diamond M Rch
Diamond M Rch: 31/100 · grade F
Diamond M Rch publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Diamond M Rch, not an official NOAA rating. Rankings still use Comfort Score 49/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Annual temperature balance | 53.3°F · 14.2° from 67.5°F | 54/100 · D |
| Snowfall burden | 21.0 inches/year | 48/100 · D |
| Precipitation balance | 15.3 in · 19.7 from 35 in | 29/100 · F |
| Frost-free season | 146 days/year | 22/100 · F |
| Normal heat + freeze calendar | 216 calendar days | 7/100 · F |
Diamond M Rch · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Diamond M Rch is a temperate Köppen climate: Csa
Coldest-month mean 36.6°F and warmest-month mean 73.3°F place this station in temperate, dry-summer, hot summer climates (Csa). Class Csa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, dry-summer, hot summer.
- Köppen code
- Csa
- Group
- Temperate
- Warmest month
- 73.3°F
- Coldest month
- 36.6°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 · heating-led station
Where Diamond M Rch sits across the climate record
Three NOAA fields for Diamond M Rch's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 54th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Drier than 82%
- Diamond M Rch's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 78%
- Warmest-to-coldest month gap for Diamond M Rch is compact versus 6,861 complete station-years.
How Diamond M Rch compares across U.S. station-mapped locations
Diamond M Rch's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
49 18th percentile score exceeds 18% 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%). This entry sits in this band.
- 50–60: 1,329 station-mapped locations (21%). Above this entry.
- 60–70: 1,236 station-mapped locations (20%). Above this entry.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 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 | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 52°F (11°C) | 23°F (-5°C) | 37°F (3°C) | 1.4" | 4.1" | 29.2 | 0.0 |
| February | 54°F (12°C) | 24°F (-5°C) | 39°F (4°C) | 1.9" | 5.0" | 26.0 | 0.0 |
| March | 61°F (16°C) | 28°F (-2°C) | 44°F (7°C) | 1.3" | 2.8" | 25.8 | 0.0 |
| April | 67°F (20°C) | 32°F (0°C) | 50°F (10°C) | 0.7" | 2.2" | 16.9 | 0.0 |
| May | 76°F (25°C) | 39°F (4°C) | 58°F (14°C) | 0.2" | 0.0" | 5.3 | 2.3 |
| June | 88°F (31°C) | 46°F (8°C) | 67°F (19°C) | 0.1" | 0.0" | 0.2 | 16.6 |
| July | 92°F (33°C) | 55°F (13°C) | 73°F (23°C) | 2.4" | 0.0" | 0.0 | 21.1 |
| August | 89°F (32°C) | 54°F (12°C) | 72°F (22°C) | 2.5" | 0.0" | 0.0 | 16.2 |
| September | 84°F (29°C) | 47°F (8°C) | 66°F (19°C) | 1.3" | 0.0" | 0.2 | 6.7 |
| October | 73°F (23°C) | 36°F (2°C) | 54°F (12°C) | 1.5" | 0.0" | 7.9 | 0.2 |
| November | 62°F (16°C) | 27°F (-3°C) | 44°F (7°C) | 0.9" | 2.0" | 24.0 | 0.0 |
| December | 52°F (11°C) | 22°F (-6°C) | 37°F (3°C) | 1.3" | 4.9" | 29.2 | 0.0 |
The year, day by day
Diamond M Rch works both ends of the calendar. Normal highs climb to 92°F by July 8 and hold at or above 90°F on 44 dates, then normal lows drop to freezing or below on 172 dates, bottoming at 21°F around December 17.
When the heat sits
Normal highs reach 90°F from June 23 through August 5, covering 44 dates. The broader mild season, normal highs of 70°F or more, runs April 28 to October 23.
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.
The freezing stretch
The normal low stays at or below 32°F into April 18, then returns to freezing around October 30, covering 172 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is July 30, when 28% of years recorded at least a hundredth of an inch. The driest is June 3 at 4%. Summed across the calendar, that is about 45 wet dates a year.
The widest day
June 15 carries the biggest normal gap between afternoon and dawn, 42°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Diamond M Rch.
Where Diamond M Rch Stands Nationally
Day-to-night contrast is extreme by national standards — the widest normal daily swing reaches about 42°F, sharper than nine in ten ranked stations see.
A drier-than-most normal water year — around 15 inches, below what four out of five ranked stations collect.
Diamond M Rch earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 4.1"
4.0 days with precipitation
Snow: 5.0"
4.4 days with precipitation
Snow: 2.8"
3.6 days with precipitation
Snow: 2.2"
2.4 days with precipitation
1.5 days with precipitation
1.1 days with precipitation
7.8 days with precipitation
7.8 days with precipitation
3.2 days with precipitation
3.4 days with precipitation
Snow: 2.0"
2.1 days with precipitation
Snow: 4.9"
3.6 days with precipitation
Diamond M Rch spreads its precipitation across the year
Neither half of the year dominates here: June through August take 32% of the annual total and December through February 29%, with neither reaching the 35% that would mark a distinct wet season. Diamond M Rch has no dry season to plan around, though it does carry a 36.7°F seasonal spread.
The gap between the wettest and driest month still matters: August averages 2.5" and June 0.1". The three wettest months together take 44% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
How Diamond M Rch's precipitation splits across the calendar
About 45 days a year record measurable precipitation here, carrying 15.3" between them, or roughly 0.34 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.
Winter brings real snow to Diamond M Rch
Diamond M Rch averages 21.0 inches of snowfall a year, with February the snowiest month on the normals, spread across roughly 8 days that record measurable snow. That is depth accumulating on the ground, which is why it can exceed the annual precipitation figure: precipitation counts the liquid the snow melts down to, and fresh snow is mostly air.
- Annual snowfall: 21.0 inches of depth.
- Days recording measurable snow: about 8 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 14% of the year's precipitation.
NOAA 1991-2020 normals. The ten-to-one ratio is a convention, not a measurement: real ratios vary with temperature, so treat the share as an order of magnitude rather than an exact split.
Frost Dates & Growing Season
First Fall Freeze
October 10
50% probability date
Last Spring Freeze
May 17
50% probability date
Growing Season
146 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,879
Higher = more heating needed
Cooling Degree Days
658
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside AZ closest to Diamond M Rch 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 (53°F here).
- Bowling Green, MO 53°F · 0.0°F off
- Corona, NM 53°F · 0.0°F off
- Holly, CO 53°F · 0.0°F off
- Lancaster, PA 53°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (15.3" here), excluding temperature-peer places.
- Fallbrook, CA 15.3" · 0.0" off
- Fortuna, ND 15.3" · 0.0" off
- Bynum, MT 15.3" · 0.0" off
- Carpenter, WY 15.3" · 0.0" off
Snow and freeze rhythm
When cold and snow define Diamond M Rch
heating led · dry · mid swing
Diamond M Rch's energy balance leans toward cold weather: 4,879 annual heating degree days against 658 for cooling. Its 36.7°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 146 days are frost-free in a normal year. That short interval is consistent with the cold-season signal, but the measure does not predict the exact first or last freeze in any one year.
-
1. Diamond M Rch coldest normal
December
The monthly mean of 37°F (3°C) sits near freezing, so cold nights and above-freezing afternoons share the same month.
-
2. Diamond M Rch typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Diamond M Rch snow peak
February
Diamond M Rch averages 21.0 inches of snow a year, with February the snowiest month on the normals.
Questions about Diamond M Rch's climate
How much snow does Diamond M Rch get? ▼
How many days above 90°F does Diamond M Rch get? ▼
How much energy does heating and cooling require in Diamond M Rch? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Diamond M Rch's primary station: DIAMOND M RCH (USC00022527). 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 Diamond M Rch; 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 Diamond M Rch 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.