Snowflake, 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 Snowflake's primary NOAA station, SNOWFLAKE.
The climate verdict for Snowflake
Dryness leads the climate profile for Snowflake, Arizona, with 11.0 inches of precipitation a year. NOAA records an annual average of 54°F. At 54/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 31% of scores.
- 54°F
- yearly average temperature, NOAA normal
- 54/100
- comfort score, above 31% of station-mapped location scores
- 11.0"
- annual precipitation · 13" snow
- 152 days
- frost-free days per growing season
Snowflake: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00028012 · Snowflake, AZ 54°F mean · 11.0" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-ARID · SWING-MID · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 54°F
- RANK-MID #3,774
- PHOTO-FINISH ≈ Sparks
- PRCP-ARID 11.0"
- SWING-MID 39°F
- COMF-LOW 54/100
- LOAD-HEAT 4,887 HDD
- STN-1 USC00028012
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Sparks, NV (+ 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.
- Snowflake (this station) 54°F
- Hot The Dalles, OR 54°F
- Near Sparks, NV 54°F
- Cold Diamond M Rch, AZ 53°F
- Near Richlands, VA 53°F
Climate Living Index · Snowflake
Snowflake: 34/100 · grade F
Snowflake publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Snowflake, not an official NOAA rating. Rankings still use Comfort Score 54/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Snowfall burden | 12.9 inches/year | 59/100 · C |
| Annual temperature balance | 53.5°F · 14.0° from 67.5°F | 54/100 · D |
| Frost-free season | 152 days/year | 27/100 · F |
| Normal heat + freeze calendar | 193 calendar days | 18/100 · F |
| Precipitation balance | 11.0 in · 24.0 from 35 in | 15/100 · F |
Snowflake · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Snowflake'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
- 73.8°F
- Coldest month
- 34.6°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 Snowflake sits across the climate record
Three NOAA fields for Snowflake's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 55th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Drier than 92%
- Snowflake's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- 32nd percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Snowflake compares across U.S. station-mapped locations
Snowflake's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
54 31st percentile score exceeds 31% 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%). This entry sits in this band.
- 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
Snowflake's measured station temperature trend
MethodologyAcross 78 complete annual observations from 1898 to 2015, SNOWFLAKE warmed at a fitted rate of 0.03°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Snowflake primary station fitted change +0.03 °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 | 50°F (10°C) | 20°F (-7°C) | 35°F (2°C) | 0.7" | 2.3" | 27.6 | 0.0 |
| February | 55°F (13°C) | 23°F (-5°C) | 39°F (4°C) | 0.6" | 2.0" | 23.7 | 0.0 |
| March | 62°F (17°C) | 28°F (-2°C) | 45°F (7°C) | 0.7" | 2.1" | 22.5 | 0.0 |
| April | 69°F (21°C) | 33°F (1°C) | 51°F (11°C) | 0.4" | 0.5" | 12.7 | 0.0 |
| May | 78°F (26°C) | 41°F (5°C) | 59°F (15°C) | 0.4" | 0.0" | 2.6 | 1.8 |
| June | 88°F (31°C) | 48°F (9°C) | 68°F (20°C) | 0.3" | 0.0" | 0.2 | 12.7 |
| July | 90°F (32°C) | 58°F (14°C) | 74°F (23°C) | 2.2" | 0.0" | 0.0 | 17.7 |
| August | 88°F (31°C) | 56°F (13°C) | 72°F (22°C) | 1.9" | 0.0" | 0.0 | 12.8 |
| September | 83°F (28°C) | 49°F (9°C) | 66°F (19°C) | 1.2" | 0.0" | 0.2 | 2.9 |
| October | 73°F (23°C) | 36°F (2°C) | 54°F (12°C) | 0.9" | 0.3" | 7.9 | 0.0 |
| November | 60°F (16°C) | 26°F (-3°C) | 43°F (6°C) | 0.8" | 1.2" | 23.4 | 0.0 |
| December | 49°F (10°C) | 20°F (-7°C) | 35°F (1°C) | 0.9" | 4.5" | 28.0 | 0.0 |
The year, day by day
Snowflake works both ends of the calendar. Normal highs climb to 91°F by July 2 and hold at or above 90°F on 25 dates, then normal lows drop to freezing or below on 168 dates, bottoming at 19°F around December 22.
When the heat sits
Normal highs reach 90°F from June 24 through July 18, covering 25 dates. The broader mild season, normal highs of 70°F or more, runs April 20 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 11, then returns to freezing around October 27, covering 168 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 August 1, when 30% of years recorded at least a hundredth of an inch. The driest is May 29 at 7%. Summed across the calendar, that is about 53 wet dates a year.
The widest day
June 10 carries the biggest normal gap between afternoon and dawn, 41°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Snowflake.
Where Snowflake Stands Nationally
Aridity defines the water calendar: about 11 inches in a normal year lands this among the driest tenth of ranked stations.
Day-to-night contrast is extreme by national standards — the widest normal daily swing reaches about 41°F, sharper than nine in ten ranked stations see.
Snowflake 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: 2.3"
4.3 days with precipitation
Snow: 2.0"
4.1 days with precipitation
Snow: 2.1"
3.8 days with precipitation
Snow: 0.5"
2.5 days with precipitation
2.2 days with precipitation
2.2 days with precipitation
8.1 days with precipitation
8.6 days with precipitation
5.4 days with precipitation
Snow: 0.3"
3.7 days with precipitation
Snow: 1.2"
3.5 days with precipitation
Snow: 4.5"
4.2 days with precipitation
Snowflake runs a summer-peaked wet season
39% of Snowflake'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 39.2°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 48% of the annual total between them.
- Driest month: June at 0.3".
- Winter share: 21% 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 Snowflake's precipitation splits across the calendar
About 53 days a year record measurable precipitation here, carrying 11.0" between them, or roughly 0.21 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 Snowflake
Snowflake averages 12.9 inches of snowfall a year, with December the snowiest month on the normals, spread across roughly 6 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: 12.9 inches of depth.
- Days recording measurable snow: about 6 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 12% 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 11
50% probability date
Growing Season
152 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,887
Higher = more heating needed
Cooling Degree Days
704
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside AZ closest to Snowflake 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 (54°F here).
- Bison, KS 54°F · 0.0°F off
- Bodega, CA 54°F · 0.0°F off
- Brookville, IN 54°F · 0.0°F off
- Brownell, KS 54°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (11.0" here), excluding temperature-peer places.
- Moro, OR 11.0" · 0.0" off
- American Falls, ID 11.1" · 0.0" off
- Coulee Dam, WA 11.1" · 0.0" off
- Odessa, WA 11.1" · 0.0" off
Snow and freeze rhythm
When cold and snow define Snowflake
heating led · dry · mid swing
Snowflake's energy balance leans toward cold weather: 4,887 annual heating degree days against 704 for cooling. Its 39.2°F seasonal range still makes the monthly rows more useful than the annual average alone.
Snowflake's frost-free season lasts about 152 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
-
1. Snowflake coldest normal
December
The monthly mean of 35°F (1°C) sits near freezing, so cold nights and above-freezing afternoons share the same month.
-
2. Snowflake typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Snowflake snow peak
December
Snowflake averages 12.9 inches of snow a year, with December the snowiest month on the normals.
Questions about Snowflake's climate
How much snow does Snowflake get? ▼
How many days above 90°F does Snowflake get? ▼
How much energy does heating and cooling require in Snowflake? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Snowflake's primary station: SNOWFLAKE (USC00028012). 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 an incorporated place (GEOID 0467800). Match rule for Snowflake: 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 Snowflake 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.