San Manuel, AZ Climate: Temperature & Rain by Month
Annual temperature and rainfall from NOAA NCEI's 1991–2020 normals →; comfort score computed by PlainClimate
30-year climate normals (1991-2020) from San Manuel's primary NOAA station, SAN MANUEL.
The climate verdict for San Manuel
Dryness leads the climate profile for San Manuel, Arizona, with 12.6 inches of precipitation a year. NOAA records an annual average of 67°F. It scores 90/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 91% of them.
- 67°F
- annual average temperature (NOAA normal)
- 90/100
- comfort score, above 91% of station-mapped location scores
- 12.6"
- annual precipitation · 1" snow
- 307 days
- growing season, frost-free days
San Manuel: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00027530 · San Manuel, AZ 67°F mean · 12.6" precip
TEMP-MILD · RANK-WARM · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-TOP · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 67°F
- RANK-WARM #6,244
- PHOTO-FINISH ≈ Amite
- PRCP-DRY 12.6"
- SWING-MID 36°F
- COMF-TOP 90/100
- LOAD-MIX H/C balanced
- STN-1 USC00027530
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Amite, LA (+ 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.
- San Manuel (this station) 67°F
- Hot Irvine Rch, CA 67°F
- Near Amite, LA 67°F
- Near Edisto Island M…, SC 67°F
- Near Fresno, CA 67°F
Climate Living Index · San Manuel
San Manuel: 73/100 · grade B
San Manuel publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for San Manuel, not an official NOAA rating. Rankings still use Comfort Score 90/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Frost-free season | 307 days/year | 100/100 · A |
| Annual temperature balance | 66.7°F · 0.8° from 67.5°F | 96/100 · A |
| Snowfall burden | 0.7 inches/year | 85/100 · A |
| Normal heat + freeze calendar | 117 calendar days | 66/100 · C |
| Precipitation balance | 12.6 in · 22.4 from 35 in | 20/100 · F |
San Manuel · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
San Manuel's normals sit in a dry climate class: BSh
Precipitation is low relative to temperature but above true desert thresholds: hot semi-arid steppe (BSh). Class BSh is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: dry (arid or semi-arid), specifically hot semi-arid steppe.
- Köppen code
- BSh
- Group
- Dry (arid or semi-arid)
- Warmest month
- 84.4°F
- Coldest month
- 48.7°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 San Manuel sits across the climate record
Three NOAA fields for San Manuel's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 9% warmest
- Among 6,861 stations, San Manuel sits in the warmer third of annual means.
- Annual precipitation
- Drier than 88%
- San Manuel's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 81%
- Warmest-to-coldest month gap for San Manuel is compact versus 6,861 complete station-years.
How San Manuel compares across U.S. station-mapped locations
San Manuel's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
90 Top 9% score exceeds 91% 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%). Below this entry.
- 90–100: 564 station-mapped locations (9%). This entry sits in this band.
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 | 60°F (16°C) | 38°F (3°C) | 49°F (9°C) | 1.1" | 0.3" | 4.6 | 0.0 |
| February | 64°F (18°C) | 41°F (5°C) | 52°F (11°C) | 1.1" | 0.1" | 2.9 | 0.0 |
| March | 71°F (22°C) | 46°F (8°C) | 59°F (15°C) | 0.7" | 0.1" | 0.3 | 0.0 |
| April | 79°F (26°C) | 51°F (11°C) | 65°F (18°C) | 0.4" | 0.1" | 0.1 | 2.0 |
| May | 88°F (31°C) | 59°F (15°C) | 74°F (23°C) | 0.3" | 0.0" | 0.0 | 13.2 |
| June | 97°F (36°C) | 69°F (21°C) | 83°F (29°C) | 0.3" | 0.0" | 0.0 | 29.2 |
| July | 97°F (36°C) | 72°F (22°C) | 84°F (29°C) | 2.4" | 0.0" | 0.0 | 28.3 |
| August | 94°F (35°C) | 71°F (22°C) | 83°F (28°C) | 2.8" | 0.0" | 0.0 | 26.6 |
| September | 90°F (32°C) | 66°F (19°C) | 78°F (26°C) | 1.3" | 0.0" | 0.0 | 15.0 |
| October | 80°F (27°C) | 57°F (14°C) | 69°F (20°C) | 0.6" | 0.0" | 0.0 | 2.2 |
| November | 69°F (20°C) | 45°F (7°C) | 57°F (14°C) | 0.6" | 0.0" | 0.4 | 0.0 |
| December | 59°F (15°C) | 38°F (3°C) | 49°F (9°C) | 1.0" | 0.1" | 5.3 | 0.0 |
The year, day by day
The year in San Manuel runs from a mild 37°F around January 1 to 99°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 22 through September 15, covering 117 dates. The broader mild season, normal highs of 70°F or more, runs March 13 to November 12.
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 January 1.
Where the wet dates fall
The likeliest wet date is July 31, when 34% of years recorded at least a hundredth of an inch. The driest is April 27 at 5%. Summed across the calendar, that is about 54 wet dates a year.
The widest day
May 31 carries the biggest normal gap between afternoon and dawn, 29°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for San Manuel.
Where San Manuel Stands Nationally
Summers here run among the most heat-heavy normals calendars in the country: on about 117 days a year the normal daily high itself reaches 90°F — a count fewer than one station in ten exceeds.
A drier-than-most normal water year — around 13 inches, below what four out of five ranked stations collect.
San Manuel 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: 0.3"
4.9 days with precipitation
Snow: 0.1"
4.8 days with precipitation
Snow: 0.1"
3.5 days with precipitation
Snow: 0.1"
1.9 days with precipitation
1.9 days with precipitation
1.8 days with precipitation
9.1 days with precipitation
9.9 days with precipitation
5.0 days with precipitation
3.2 days with precipitation
2.9 days with precipitation
Snow: 0.1"
5.0 days with precipitation
San Manuel runs a summer-peaked wet season
44% of San Manuel'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 August at 2.8", on a 35.7°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: August, July, September, taking 51% of the annual total between them.
- Driest month: May at 0.3".
- Winter share: 26% 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 San Manuel's precipitation splits across the calendar
About 54 days a year record measurable precipitation here, carrying 12.6" between them, or roughly 0.23 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 San Manuel, but rarely amounts to much
The normals record 0.7 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; about 1 days a year record any measurable snow at all.
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
December 8
50% probability date
Last Spring Freeze
February 4
50% probability date
Growing Season
307 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,942
Higher = more heating needed
Cooling Degree Days
2,588
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside AZ closest to San Manuel 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 (67°F here).
- Fresno, CA 67°F · 0.0°F off
- San Angelo, TX 67°F · 0.0°F off
- Arlington, TX 67°F · 0.1°F off
- Hammond, LA 67°F · 0.1°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (12.6" here), excluding temperature-peer places.
- Palmer, AK 12.6" · 0.0" off
- Conrad, MT 12.6" · 0.0" off
- Kermit, TX 12.6" · 0.0" off
- Maybell, CO 12.6" · 0.0" off
Scarce-water calendar
Where San Manuel's limited precipitation lands
mixed demand · dry · mid swing
Local precipitation is sparse in this otherwise mixed profile. The station reports 12.6 inches annually, within PlainClimate's dry band. Annual snowfall totals 0.7 inches. 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 San Manuel's middle-range seasonal profile. The measured spread is 35.7°F. The annual average is 67°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Heating and cooling both register in San Manuel's normal, at 1,942 and 2,588 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.
San Manuel has a long frost-free window of roughly 307 days, but the dry annual profile is a separate constraint. Growing-season length says when freezes are unlikely, not whether rainfall is sufficient.
San Manuel wettest normal
August
August concentrates the scarce annual total (12.6 inches).
San Manuel driest normal
May
May is typically driest; arid stations are defined by when water is absent, not by a four-season grid.
Questions about San Manuel's climate
How dry is San Manuel? ▼
How many days above 90°F does San Manuel get? ▼
How much energy does heating and cooling require in San Manuel? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from San Manuel's primary station: SAN MANUEL (USC00027530). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as a census-designated place (GEOID 0463540), not an incorporated municipality. Match rule for San Manuel: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for San Manuel 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.