Robson Rch, AZ Climate: Temperature & Rain by Month
Temperature and precipitation from NOAA NCEI 1991–2020 normals →, plus PlainClimate's derived comfort score
30-year climate normals (1991-2020) from Robson Rch's primary NOAA station, ROBSON RCH.
The climate verdict for Robson Rch
Robson Rch, Arizona is cooling-led and dry. Its 7.8 inches of annual precipitation pairs with an annual average of 71°F. Its climate comfort score of 73/100 (good) lands mid-pack nationally, exceeding 66% of station-mapped location scores.
- 71°F
- yearly average temperature, NOAA normal
- 73/100
- comfort score, above 66% of station-mapped location scores
- 7.8"
- annual precipitation
- 299 days
- frost-free growing season
Robson Rch: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00027187 · Robson Rch, AZ 71°F mean · 7.8" precip
TEMP-HOT · RANK-WARM · PHOTO-FINISH · PRCP-ARID · SWING-MID · COMF-MID · LOAD-COOL · STN-1 · BOOK-FULL
- TEMP-HOT 71°F
- RANK-WARM #6,587
- PHOTO-FINISH ≈ Chandler Heights
- PRCP-ARID 7.8"
- SWING-MID 40°F
- COMF-MID 73/100
- LOAD-COOL 3,693 CDD
- STN-1 USC00027187
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Chandler Heights, 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 Presidio, TX 72°F
- Robson Rch (this station) 71°F
- Cold Eloy, AZ 71°F
- Near Chandler Heights, AZ 71°F
- Near Study Butte, TX 71°F
Climate Living Index · Robson Rch
Robson Rch: 57/100 · grade C
Robson Rch publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Robson Rch, not an official NOAA rating. Rankings still use Comfort Score 73/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Frost-free season | 299 days/year | 100/100 · A |
| Annual temperature balance | 71.3°F · 3.8° from 67.5°F | 89/100 · A |
| Normal heat + freeze calendar | 163 calendar days | 37/100 · F |
| Precipitation balance | 7.8 in · 27.3 from 35 in | 7/100 · F |
Robson Rch · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Robson Rch'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
- 90.9°F
- Coldest month
- 51.4°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 Robson Rch sits across the climate record
Three NOAA fields for Robson Rch's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 4% warmest
- Among 6,861 stations, Robson Rch sits in the warmer third of annual means.
- Annual precipitation
- Drier than 97%
- Robson Rch's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- 34th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Robson Rch compares across U.S. station-mapped locations
Robson Rch's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
73 Top 34% score exceeds 66% 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%). This entry sits in this band.
- 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 | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 67°F (19°C) | 38°F (3°C) | 52°F (11°C) | 1.1" | 6.5 | 0.0 |
| February | 71°F (22°C) | 42°F (5°C) | 57°F (14°C) | 1.0" | 3.1 | 0.0 |
| March | 80°F (27°C) | 47°F (8°C) | 63°F (17°C) | 0.7" | 0.1 | 3.0 |
| April | 87°F (31°C) | 52°F (11°C) | 70°F (21°C) | 0.2" | 0.0 | 13.3 |
| May | 95°F (35°C) | 60°F (15°C) | 78°F (25°C) | 0.1" | 0.0 | 24.0 |
| June | 106°F (41°C) | 69°F (21°C) | 88°F (31°C) | 0.3" | 0.0 | 29.9 |
| July | 105°F (41°C) | 76°F (25°C) | 91°F (33°C) | 0.8" | 0.0 | 31.0 |
| August | 104°F (40°C) | 75°F (24°C) | 89°F (32°C) | 0.9" | 0.0 | 31.0 |
| September | 99°F (37°C) | 69°F (20°C) | 84°F (29°C) | 0.5" | 0.0 | 27.6 |
| October | 89°F (31°C) | 57°F (14°C) | 73°F (23°C) | 0.8" | 0.1 | 15.5 |
| November | 76°F (24°C) | 45°F (7°C) | 60°F (16°C) | 0.5" | 0.6 | 0.7 |
| December | 65°F (19°C) | 37°F (3°C) | 51°F (11°C) | 0.9" | 7.1 | 0.0 |
The year, day by day
The year in Robson Rch runs from a mild 37°F around December 21 to 108°F at the peak near June 24, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from May 2 through October 11, covering 163 dates. The broader mild season, normal highs of 70°F or more, runs February 10 to November 27.
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 37°F around December 21.
Where the wet dates fall
The likeliest wet date is August 1, when 17% of years recorded at least a hundredth of an inch. The driest is June 2 at 2%. Summed across the calendar, that is about 33 wet dates a year.
The widest day
June 4 carries the biggest normal gap between afternoon and dawn, 39°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Robson Rch.
Where Robson Rch Stands Nationally
Summers here run among the most heat-heavy normals calendars in the country: on about 163 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 8 inches in a normal year lands this among the driest tenth of ranked stations.
Robson 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
3.5 days with precipitation
3.3 days with precipitation
2.3 days with precipitation
0.7 days with precipitation
1.2 days with precipitation
0.7 days with precipitation
4.5 days with precipitation
5.0 days with precipitation
3.1 days with precipitation
2.2 days with precipitation
1.9 days with precipitation
4.2 days with precipitation
Robson Rch's wet season runs through the cold months
December, January and February carry 38% of the year's precipitation here, while June through August contribute 25%. 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 39.5°F seasonal spread.
- Wettest month
- January, 1.1"
- Driest month
- May, 0.1"
- Wettest three months
- January, February, August (39% 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 Robson Rch's precipitation splits across the calendar
About 33 days a year record measurable precipitation here, carrying 7.8" between them, or roughly 0.24 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 3
50% probability date
Last Spring Freeze
February 7
50% probability date
Growing Season
299 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,363
Higher = more heating needed
Cooling Degree Days
3,693
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside AZ closest to Robson 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 (71°F here).
- Crescent City, FL 71°F · 0.0°F off
- Ocala, FL 71°F · 0.0°F off
- Point Comfort, TX 71°F · 0.0°F off
- Live Oak, FL 71°F · 0.1°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (7.8" here), excluding temperature-peer places.
- Manassa, CO 7.8" · 0.0" off
- Farmington, NM 7.8" · 0.0" off
- Worland, WY 7.7" · 0.0" off
- Gerlach, NV 7.8" · 0.0" off
Scarce-water calendar
Where Robson Rch's limited precipitation lands
cooling led · dry · mid swing
Air-conditioning demand is the clearest thermal signal here. Robson Rch accumulates 3,693 cooling degree days, more than twice its 1,363 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: Robson Rch receives 7.8 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 Robson Rch's middle-range seasonal profile. The measured spread is 39.5°F. The annual average is 71°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Robson Rch has a long frost-free window of roughly 299 days, but the dry annual profile is a separate constraint. Growing-season length says when freezes are unlikely, not whether rainfall is sufficient.
Robson Rch wettest normal
January
January concentrates the scarce annual total (7.8 inches).
Robson Rch driest normal
May
May is typically driest; arid stations are defined by when water is absent, not by a four-season grid.
Questions about Robson Rch's climate
How dry is Robson Rch? ▼
How many days above 90°F does Robson Rch get? ▼
How much energy does heating and cooling require in Robson Rch? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Robson Rch's primary station: ROBSON RCH (USC00027187). 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 Robson 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 Robson 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.