Alpine, AZ Climate: Temperature & Rain by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Alpine's primary NOAA station, ALPINE.
The climate verdict for Alpine
Alpine, Arizona has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 46°F. Its climate comfort score of 59/100 (moderate) lands mid-pack nationally, exceeding 37% of station-mapped location scores.
- 46°F
- yearly average temperature, NOAA normal
- 59/100
- comfort score, above 37% of station-mapped location scores
- 20.1"
- annual precipitation · 45" snow
- 98 days
- frost-free days per growing season
Alpine: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00020159 · Alpine, AZ 46°F mean · 20.1" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 46°F
- RANK-COOL #1,509
- PHOTO-FINISH ≈ Cloudcroft
- PRCP-DRY 20.1"
- SWING-MID 32°F
- COMF-MID 59/100
- LOAD-HEAT 7,040 HDD
- STN-1 USC00020159
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Cloudcroft, NM (+ 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.
- Alpine (this station) 46°F
- Cold Port Alexander, AK 46°F
- Hot Metlakatla, AK 46°F
- Near Cloudcroft, NM 46°F
- Near Gascon, NM 46°F
Climate Living Index · Alpine
Alpine: 19/100 · grade F
Alpine publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Alpine, not an official NOAA rating. Rankings still use Comfort Score 59/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 20.1 in · 14.9 from 35 in | 48/100 · D |
| Snowfall burden | 44.8 inches/year | 24/100 · F |
| Annual temperature balance | 45.7°F · 21.8° from 67.5°F | 22/100 · F |
| Normal heat + freeze calendar | 225 calendar days | 3/100 · F |
| Frost-free season | 98 days/year | 0/100 · F |
Alpine · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Alpine is a continental Köppen climate: Dsb
Coldest-month mean 30.5°F and warmest-month mean 62.6°F place this station in continental, dry-summer, warm summer climates (Dsb). Class Dsb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, dry-summer, warm summer.
- Köppen code
- Dsb
- Group
- Continental
- Warmest month
- 62.6°F
- Coldest month
- 30.5°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 Alpine sits across the climate record
Three NOAA fields for Alpine's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 78%
- Among 6,861 stations, Alpine sits in the cooler third of annual means.
- Annual precipitation
- Drier than 72%
- Alpine's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 87%
- Warmest-to-coldest month gap for Alpine is compact versus 6,861 complete station-years.
How Alpine compares across U.S. station-mapped locations
Alpine's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
59 37th percentile score exceeds 37% 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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 46°F (8°C) | 15°F (-9°C) | 31°F (-1°C) | 1.3" | 10.7" | 30.7 | 0.0 |
| February | 48°F (9°C) | 18°F (-8°C) | 33°F (1°C) | 1.1" | 9.9" | 27.1 | 0.0 |
| March | 54°F (12°C) | 23°F (-5°C) | 38°F (3°C) | 0.9" | 8.2" | 28.9 | 0.0 |
| April | 61°F (16°C) | 26°F (-3°C) | 43°F (6°C) | 0.5" | 1.7" | 24.4 | 0.0 |
| May | 69°F (20°C) | 32°F (0°C) | 50°F (10°C) | 0.7" | 0.5" | 18.0 | 0.0 |
| June | 78°F (26°C) | 39°F (4°C) | 58°F (15°C) | 0.8" | 0.0" | 6.0 | 0.2 |
| July | 79°F (26°C) | 47°F (8°C) | 63°F (17°C) | 3.9" | 0.0" | 0.3 | 0.1 |
| August | 76°F (24°C) | 46°F (8°C) | 61°F (16°C) | 4.3" | 0.0" | 0.0 | 0.0 |
| September | 72°F (22°C) | 39°F (4°C) | 56°F (13°C) | 2.3" | 0.0" | 3.6 | 0.0 |
| October | 64°F (18°C) | 30°F (-1°C) | 47°F (8°C) | 1.6" | 1.3" | 21.2 | 0.0 |
| November | 54°F (12°C) | 22°F (-6°C) | 38°F (3°C) | 1.2" | 4.6" | 27.9 | 0.0 |
| December | 46°F (8°C) | 16°F (-9°C) | 31°F (-1°C) | 1.4" | 7.9" | 29.9 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 80°F around June 27, short of 90°F on every date, while 225 dates carry a normal low at or below freezing, the coldest 15°F near January 1.
The freezing stretch
The normal low stays at or below 32°F into May 19, then returns to freezing around October 8, covering 225 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 51% of years recorded at least a hundredth of an inch. The driest is April 20 at 8%. Summed across the calendar, that is about 75 wet dates a year.
The widest day
June 11 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 Alpine.
Where Alpine Stands Nationally
Winters bite deep and often: the normal nightly low dips to freezing or below on around 225 nights a year, placing this among the most frost-prone 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.
Alpine 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: 10.7"
5.3 days with precipitation
Snow: 9.9"
4.7 days with precipitation
Snow: 8.2"
4.4 days with precipitation
Snow: 1.7"
2.4 days with precipitation
Snow: 0.5"
3.8 days with precipitation
4.2 days with precipitation
14.3 days with precipitation
14.9 days with precipitation
7.8 days with precipitation
Snow: 1.3"
5.3 days with precipitation
Snow: 4.6"
2.8 days with precipitation
Snow: 7.9"
4.6 days with precipitation
Alpine runs a summer-peaked wet season
45% of Alpine'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 4.3", on a 32.1°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 52% of the annual total between them.
- Driest month: April at 0.5".
- Winter share: 19% 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 Alpine's precipitation splits across the calendar
About 74 days a year record measurable precipitation here, carrying 20.1" between them, or roughly 0.27 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 Alpine
Alpine averages 44.8 inches of snowfall a year, with January the snowiest month on the normals, spread across roughly 15 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: 44.8 inches of depth.
- Days recording measurable snow: about 15 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 22% 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
September 21
50% probability date
Last Spring Freeze
June 15
50% probability date
Growing Season
98 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,040
Higher = more heating needed
Cooling Degree Days
23
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside AZ closest to Alpine 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 (46°F here).
- Bison, SD 46°F · 0.0°F off
- Brunswick, ME 46°F · 0.0°F off
- Canton, SD 46°F · 0.0°F off
- Chilton, WI 46°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (20.1" here), excluding temperature-peer places.
- Ipswich, SD 20.2" · 0.0" off
- La Joya, TX 20.2" · 0.0" off
- Gettysburg, SD 20.2" · 0.0" off
- Scott City, KS 20.2" · 0.0" off
Snow and freeze rhythm
When cold and snow define Alpine
heating led · moderate · mid swing
Alpine's energy balance leans toward cold weather: 7,040 annual heating degree days against 23 for cooling. Its 32.1°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 98 days are frost-free in a normal year. That short interval is consistent with the cold-season signal, but the measure does not predict the exact first or last freeze in any one year.
-
1. Alpine coldest normal
January
The monthly mean of 31°F (-1°C) sits near freezing, so cold nights and above-freezing afternoons share the same month.
-
2. Alpine typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Alpine snow peak
January
Alpine averages 44.8 inches of snow a year, with January the snowiest month on the normals.
Questions about Alpine's climate
How much snow does Alpine get? ▼
How cold does Alpine get in winter? ▼
How much energy does heating and cooling require in Alpine? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Alpine's primary station: ALPINE (USC00020159). 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 0401920), not an incorporated municipality. Match rule for Alpine: 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 Alpine 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.