San Simon, 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 Simon's primary NOAA station, SAN SIMON.
The climate verdict for San Simon
Dryness leads the climate profile for San Simon, Arizona, with 10.3 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
- average temperature, NOAA 1991-2020 normal
- 83/100
- comfort score, above 81% of station-mapped location scores
- 10.3"
- annual precipitation · 1" snow
- 200 days
- growing season, frost-free days
San Simon: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00027560 · San Simon, AZ 63°F mean · 10.3" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-ARID · SWING-MID · COMF-TOP · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 63°F
- RANK-UPPER #5,626
- PHOTO-FINISH ≈ Ashdown
- PRCP-ARID 10.3"
- SWING-MID 38°F
- COMF-TOP 83/100
- LOAD-MIX H/C balanced
- STN-1 USC00027560
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Ashdown, AR (+ 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 Simon (this station) 63°F
- Hot Goodsprings, NV 63°F
- Near Ashdown, AR 63°F
- Near Chisos Basin, TX 63°F
- Near Durant, OK 63°F
Climate Living Index · San Simon
San Simon: 46/100 · grade D
San Simon 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 Simon, not an official NOAA rating. Rankings still use Comfort Score 83/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Annual temperature balance | 62.9°F · 4.6° from 67.5°F | 86/100 · A |
| Snowfall burden | 1.2 inches/year | 81/100 · B |
| Frost-free season | 200 days/year | 64/100 · C |
| Precipitation balance | 10.3 in · 24.7 from 35 in | 13/100 · F |
| Normal heat + freeze calendar | 221 calendar days | 5/100 · F |
San Simon · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
San Simon'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
- 82.0°F
- Coldest month
- 44.0°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 Simon sits across the climate record
Three NOAA fields for San Simon's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 18% warmest
- Among 6,861 stations, San Simon sits in the warmer third of annual means.
- Annual precipitation
- Drier than 93%
- San Simon's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 73%
- Warmest-to-coldest month gap for San Simon is compact versus 6,861 complete station-years.
How San Simon compares across U.S. station-mapped locations
San Simon'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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 61°F (16°C) | 28°F (-2°C) | 44°F (7°C) | 0.9" | 0.5" | 24.2 | 0.0 |
| February | 66°F (19°C) | 31°F (-1°C) | 48°F (9°C) | 0.8" | 0.2" | 17.3 | 0.0 |
| March | 74°F (23°C) | 36°F (2°C) | 55°F (13°C) | 0.5" | 0.0" | 9.6 | 0.2 |
| April | 81°F (27°C) | 41°F (5°C) | 61°F (16°C) | 0.2" | 0.0" | 3.6 | 3.9 |
| May | 90°F (32°C) | 49°F (9°C) | 70°F (21°C) | 0.1" | 0.0" | 0.3 | 17.9 |
| June | 99°F (37°C) | 59°F (15°C) | 79°F (26°C) | 0.4" | 0.0" | 0.0 | 28.4 |
| July | 98°F (37°C) | 66°F (19°C) | 82°F (28°C) | 2.2" | 0.0" | 0.0 | 29.1 |
| August | 96°F (35°C) | 65°F (18°C) | 80°F (27°C) | 1.9" | 0.0" | 0.0 | 27.8 |
| September | 92°F (33°C) | 59°F (15°C) | 75°F (24°C) | 0.9" | 0.0" | 0.0 | 21.0 |
| October | 83°F (28°C) | 46°F (8°C) | 64°F (18°C) | 0.8" | 0.0" | 1.4 | 6.0 |
| November | 70°F (21°C) | 34°F (1°C) | 52°F (11°C) | 0.6" | 0.2" | 12.1 | 0.0 |
| December | 60°F (16°C) | 28°F (-2°C) | 44°F (7°C) | 1.0" | 0.3" | 22.8 | 0.0 |
The year, day by day
San Simon works both ends of the calendar. Normal highs climb to 100°F by June 21 and hold at or above 90°F on 130 dates, then normal lows drop to freezing or below on 91 dates, bottoming at 27°F around January 1.
When the heat sits
Normal highs reach 90°F from May 16 through September 22, covering 130 dates. The broader mild season, normal highs of 70°F or more, runs March 4 to November 15.
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 February 21, then returns to freezing around November 23, covering 91 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 31, when 19% of years recorded at least a hundredth of an inch. The driest is May 15 at 2%. Summed across the calendar, that is about 33 wet dates a year.
The widest day
May 30 carries the biggest normal gap between afternoon and dawn, 43°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for San Simon.
Where San Simon Stands Nationally
Summers here run among the most heat-heavy normals calendars in the country: on about 130 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 10 inches in a normal year lands this among the driest tenth of ranked stations.
San Simon 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: 0.5"
2.8 days with precipitation
Snow: 0.2"
3.3 days with precipitation
2.5 days with precipitation
0.9 days with precipitation
0.4 days with precipitation
1.3 days with precipitation
5.3 days with precipitation
5.7 days with precipitation
3.2 days with precipitation
2.1 days with precipitation
Snow: 0.2"
2.1 days with precipitation
Snow: 0.3"
3.0 days with precipitation
San Simon runs a summer-peaked wet season
44% of San Simon'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 2.2", on a 38°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, December, taking 50% of the annual total between them.
- Driest month: May at 0.1".
- 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 Simon's precipitation splits across the calendar
About 33 days a year record measurable precipitation here, carrying 10.3" between them, or roughly 0.32 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 Simon, but rarely amounts to much
The normals record 1.2 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 0 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
November 2
50% probability date
Last Spring Freeze
April 16
50% probability date
Growing Season
200 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,730
Higher = more heating needed
Cooling Degree Days
1,983
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside AZ closest to San Simon 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).
- Ashdown, AR 63°F · 0.0°F off
- Durant, OK 63°F · 0.0°F off
- Goodsprings, NV 63°F · 0.0°F off
- Hamlet, NC 63°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (10.3" here), excluding temperature-peer places.
- Van Horn, TX 10.3" · 0.0" off
- Visalia, CA 10.3" · 0.0" off
- Prineville, OR 10.3" · 0.0" off
- Big Delta, AK 10.3" · 0.0" off
Scarce-water calendar
Where San Simon's limited precipitation lands
mixed demand · dry · mid swing
Local precipitation is sparse in this otherwise mixed profile. The station reports 10.3 inches annually, within PlainClimate's dry band. Annual snowfall totals 1.2 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 Simon's middle-range seasonal profile. The measured spread is 38.0°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 San Simon's normal, at 2,730 and 1,983 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 200-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.
San Simon wettest normal
July
July concentrates the scarce annual total (10.3 inches).
San Simon 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 Simon's climate
How dry is San Simon? ▼
How many days above 90°F does San Simon get? ▼
How much energy does heating and cooling require in San Simon? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from San Simon's primary station: SAN SIMON (USC00027560). 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 0463820), not an incorporated municipality. Match rule for San Simon: 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 Simon 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.