Tumacacori National Monument, 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 Tumacacori National Monument's primary NOAA station, TUMACACORI NM.
The climate verdict for Tumacacori National Monument
Dryness leads the climate profile for Tumacacori National Monument, Arizona, with 15.9 inches of precipitation a year. NOAA records an annual average of 63°F. It scores 83/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 81% of them.
- 63°F
- annual average temperature (NOAA normal)
- 83/100
- comfort score, above 81% of station-mapped location scores
- 15.9"
- annual precipitation
- 219 days
- frost-free days per growing season
Tumacacori National Monument: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00028865 · Tumacacori National Monument, AZ 63°F mean · 15.9" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-TOP · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 63°F
- RANK-UPPER #5,695
- PHOTO-FINISH ≈ Athens Ben Epps
- PRCP-DRY 15.9"
- SWING-MID 33°F
- COMF-TOP 83/100
- LOAD-MIX H/C balanced
- STN-1 USC00028865
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Athens Ben Epps, GA (+ 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.
- Tumacacori Nati… (this station) 63°F
- Hot Clarksville, TX 63°F
- Near Athens Ben Epps, GA 63°F
- Near Batesburg, SC 63°F
- Near Clanton, AL 63°F
Climate Living Index · Tumacacori National Monument
Tumacacori National Monument: 65/100 · grade C
Tumacacori National Monument publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Tumacacori National Monument, not an official NOAA rating. Rankings still use Comfort Score 83/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Snowfall burden | 0.1 inches/year | 89/100 · A |
| Annual temperature balance | 63.0°F · 4.5° from 67.5°F | 86/100 · A |
| Frost-free season | 219 days/year | 77/100 · B |
| Normal heat + freeze calendar | 143 calendar days | 51/100 · D |
| Precipitation balance | 15.9 in · 19.1 from 35 in | 32/100 · F |
Tumacacori National Monument · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Tumacacori National Monument's normals sit in a dry climate class: BSk
Precipitation is low relative to temperature but above true desert thresholds: cold semi-arid steppe (BSk). Class BSk is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: dry (arid or semi-arid), specifically cold semi-arid steppe.
- Köppen code
- BSk
- Group
- Dry (arid or semi-arid)
- Warmest month
- 80.1°F
- Coldest month
- 47.2°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 · balanced station
Where Tumacacori National Monument sits across the climate record
Three NOAA fields for Tumacacori National Monument's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 17% warmest
- Among 6,861 stations, Tumacacori National Monument sits in the warmer third of annual means.
- Annual precipitation
- Drier than 80%
- Tumacacori National Monument's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 86%
- Warmest-to-coldest month gap for Tumacacori National Monument is compact versus 6,861 complete station-years.
How Tumacacori National Monument compares across U.S. station-mapped locations
Tumacacori National Monument's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
83 Top 19% score exceeds 81% 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
Tumacacori National Monument's measured station temperature trend
MethodologyAcross 44 complete annual observations from 1947 to 2018, TUMACACORI NM warmed at a fitted rate of 0.20°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Tumacacori National Monument primary station fitted change +0.20 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 63°F (17°C) | 32°F (0°C) | 48°F (9°C) | 1.1" | 0.1" | 16.9 | 0.0 |
| February | 66°F (19°C) | 34°F (1°C) | 50°F (10°C) | 1.1" | 0.0" | 11.9 | 0.0 |
| March | 72°F (22°C) | 38°F (3°C) | 55°F (13°C) | 0.8" | 0.0" | 6.3 | 0.3 |
| April | 78°F (26°C) | 43°F (6°C) | 60°F (16°C) | 0.3" | 0.0" | 1.8 | 2.4 |
| May | 86°F (30°C) | 49°F (10°C) | 68°F (20°C) | 0.2" | 0.0" | 0.2 | 13.1 |
| June | 95°F (35°C) | 59°F (15°C) | 77°F (25°C) | 0.5" | 0.0" | 0.0 | 26.9 |
| July | 93°F (34°C) | 67°F (19°C) | 80°F (27°C) | 3.8" | 0.0" | 0.0 | 25.4 |
| August | 91°F (33°C) | 66°F (19°C) | 79°F (26°C) | 3.4" | 0.0" | 0.0 | 23.2 |
| September | 89°F (31°C) | 60°F (15°C) | 74°F (23°C) | 1.8" | 0.0" | 0.0 | 17.5 |
| October | 81°F (27°C) | 48°F (9°C) | 65°F (18°C) | 1.1" | 0.0" | 0.8 | 6.2 |
| November | 71°F (22°C) | 38°F (3°C) | 55°F (13°C) | 0.9" | 0.0" | 6.1 | 0.0 |
| December | 63°F (17°C) | 32°F (0°C) | 47°F (8°C) | 1.0" | 0.0" | 16.3 | 0.0 |
The year, day by day
Tumacacori National Monument works both ends of the calendar. Normal highs climb to 96°F by June 20 and hold at or above 90°F on 105 dates, then normal lows drop to freezing or below on 38 dates, bottoming at 31°F around December 19.
When the heat sits
Normal highs reach 90°F from May 27 through September 8, covering 105 dates. The broader mild season, normal highs of 70°F or more, runs March 10 to November 19.
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 January 16, then returns to freezing around December 10, covering 38 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 28, when 39% of years recorded at least a hundredth of an inch. The driest is May 3 at 2%. Summed across the calendar, that is about 50 wet dates a year.
The widest day
June 2 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 Tumacacori National Monument.
Where Tumacacori National Monument Stands Nationally
Summers here run among the most heat-heavy normals calendars in the country: on about 105 days a year the normal daily high itself reaches 90°F — a count fewer than one station in ten exceeds.
Day-to-night contrast is extreme by national standards — the widest normal daily swing reaches about 39°F, sharper than nine in ten ranked stations see.
Tumacacori National Monument 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: 0.1"
3.6 days with precipitation
3.9 days with precipitation
2.7 days with precipitation
1.5 days with precipitation
0.7 days with precipitation
1.8 days with precipitation
11.4 days with precipitation
10.1 days with precipitation
5.0 days with precipitation
2.5 days with precipitation
2.1 days with precipitation
3.7 days with precipitation
Tumacacori National Monument runs a summer-peaked wet season
48% of Tumacacori National Monument's yearly precipitation falls in June, July and August alone, against the 25% an evenly spread year would give those three months. The wettest month is July at 3.8", on a 32.9°F seasonal spread. Warm-season convection and, across the Southwest, the North American monsoon produce this shape: rain arrives in short heavy bursts during the hottest part of the year rather than as long cool-season soaking.
- Wettest three months: July, August, September, taking 56% of the annual total between them.
- Driest month: May at 0.2".
- Winter share: 20% falls in December, January and February.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A summer-peaked label means the June-August share reaches 35%; it describes timing across an average year, not any single season, and says nothing about how heavy an individual storm can be.
How Tumacacori National Monument's precipitation splits across the calendar
About 49 days a year record measurable precipitation here, carrying 15.9" between them, or roughly 0.33 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.
Snow reaches Tumacacori National Monument, but rarely amounts to much
The normals record 0.1 inches of snow a year here, most likely in January. That is a real but marginal amount: enough that snow is part of the local record, not enough to define the winter.
A figure in this range usually reflects a handful of events that melt quickly rather than a season of accumulation.
NOAA 1991-2020 normals. An average across thirty years can smooth away a single heavy winter, so a small annual figure does not mean a significant snowfall is impossible.
Frost Dates & Growing Season
First Fall Freeze
November 10
50% probability date
Last Spring Freeze
April 5
50% probability date
Growing Season
219 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,441
Higher = more heating needed
Cooling Degree Days
1,752
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside AZ closest to Tumacacori National Monument 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 (63°F here).
- Clanton, AL 63°F · 0.0°F off
- Clarksville, TX 63°F · 0.0°F off
- Dermott, AR 63°F · 0.0°F off
- Elliott, SC 63°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (15.9" here), excluding temperature-peer places.
- Fremont, CA 15.9" · 0.0" off
- Wiseman, AK 15.9" · 0.0" off
- Judith Gap, MT 15.9" · 0.0" off
- Colorado Springs, CO 15.9" · 0.0" off
Data-derived climate profile
How Tumacacori National Monument's climate pattern fits together
mixed demand · dry · mid swing
Local precipitation is sparse in this otherwise mixed profile. The station reports 15.9 inches annually, within PlainClimate's dry band. Recorded annual snowfall is negligible. The monthly distribution matters because the total alone does not reveal the timing.
July and December mark the typical warm and cold ends of the calendar in Tumacacori National Monument's middle-range seasonal profile. The measured spread is 32.9°F. The annual average is 63°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Heating and cooling both register in Tumacacori National Monument's normal, at 2,441 and 1,752 degree days respectively. Neither total exceeds the other by more than two to one, so the record is better read as a mixed-demand calendar than as heating-led or cooling-led.
A roughly 219-day frost-free season sits inside this mixed heating-and-cooling profile. Start and end dates matter because both sides of the thermostat register during a normal year.
These labels group NOAA 1991-2020 normals from Tumacacori National Monument's primary station, where heating and cooling demand are close enough that neither season sets the character on its own. On a balanced station like Tumacacori National Monument, the bands are descriptive ranges rather than an official NOAA classification or a forecast.
Questions about Tumacacori National Monument's climate
How much rain does Tumacacori National Monument get? ▼
How many days above 90°F does Tumacacori National Monument get? ▼
How much energy does heating and cooling require in Tumacacori National Monument? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Tumacacori National Monument's primary station: TUMACACORI NM (USC00028865). 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 Tumacacori National Monument; 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 Tumacacori National Monument 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.