Alpine, CA Climate: Temperature & Rain by Month
Temperature and precipitation from NOAA NCEI 1991–2020 normals →, plus PlainClimate's derived comfort score
30-year climate normals (1991-2020) from Alpine's primary NOAA station, ALPINE.
The climate verdict for Alpine
Dryness leads the climate profile for Alpine, California, with 16.1 inches of precipitation a year. NOAA records an annual average of 63°F. It scores 88/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 89% of them.
- 63°F
- average temperature, NOAA 1991-2020 normal
- 88/100
- comfort score, above 89% of station-mapped location scores
- 16.1"
- annual precipitation
- 315 days
- frost-free growing season
Alpine: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00040136 · Alpine, CA 63°F mean · 16.1" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-DRY · SWING-NARROW · COMF-TOP · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 63°F
- RANK-UPPER #5,626
- PHOTO-FINISH ≈ Athens
- PRCP-DRY 16.1"
- SWING-NARROW 23°F
- COMF-TOP 88/100
- LOAD-MIX H/C balanced
- STN-1 USC00040136
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Athens, AL (+ 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 CA station list.
- Alpine (this station) 63°F
- Hot Kingman Mohave…, AZ 63°F
- Near Athens, AL 63°F
- Near Benton, AR 63°F
- Near Bishopville, SC 63°F
Climate Living Index · Alpine
Alpine: 81/100 · grade B
Alpine publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Alpine, not an official NOAA rating. Rankings still use Comfort Score 88/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Frost-free season | 315 days/year | 100/100 · A |
| Normal heat + freeze calendar | 0 calendar days | 100/100 · A |
| Annual temperature balance | 62.6°F · 4.9° from 67.5°F | 85/100 · A |
| Precipitation balance | 16.1 in · 18.9 from 35 in | 32/100 · F |
Alpine · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Alpine is a temperate Köppen climate: Csa
Coldest-month mean 52.3°F and warmest-month mean 75.5°F place this station in temperate, dry-summer, hot summer climates (Csa). Class Csa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, dry-summer, hot summer.
- Köppen code
- Csa
- Group
- Temperate
- Warmest month
- 75.5°F
- Coldest month
- 52.3°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 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
- Top 18% warmest
- Among 6,861 stations, Alpine sits in the warmer third of annual means.
- Annual precipitation
- Drier than 80%
- Alpine's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 95%
- 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
88 Top 11% score exceeds 89% 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
Alpine's measured station temperature trend
MethodologyAcross 42 complete annual observations from 1953 to 2025, ALPINE warmed at a fitted rate of 0.29°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Alpine primary station fitted change +0.29 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 64°F (18°C) | 43°F (6°C) | 53°F (12°C) | 3.2" | 0.6 | 0.0 |
| February | 64°F (18°C) | 42°F (6°C) | 53°F (12°C) | 3.6" | 0.9 | 0.0 |
| March | 67°F (20°C) | 44°F (7°C) | 56°F (13°C) | 2.7" | 0.2 | 0.1 |
| April | 71°F (22°C) | 47°F (8°C) | 59°F (15°C) | 1.2" | 0.1 | 1.0 |
| May | 74°F (24°C) | 51°F (10°C) | 63°F (17°C) | 0.6" | 0.0 | 1.9 |
| June | 81°F (27°C) | 54°F (12°C) | 68°F (20°C) | 0.1" | 0.0 | 4.8 |
| July | 87°F (30°C) | 60°F (16°C) | 73°F (23°C) | 0.1" | 0.0 | 12.2 |
| August | 89°F (32°C) | 62°F (17°C) | 76°F (24°C) | 0.1" | 0.0 | 16.8 |
| September | 86°F (30°C) | 60°F (16°C) | 73°F (23°C) | 0.3" | 0.0 | 12.8 |
| October | 78°F (26°C) | 54°F (12°C) | 66°F (19°C) | 0.6" | 0.0 | 5.0 |
| November | 71°F (21°C) | 48°F (9°C) | 59°F (15°C) | 1.5" | 0.1 | 0.4 |
| December | 63°F (17°C) | 42°F (5°C) | 52°F (11°C) | 2.0" | 1.3 | 0.0 |
The year, day by day
The calendar barely moves in Alpine: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 41°F near December 16 and 89°F near August 20.
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 41°F around December 16.
Where the wet dates fall
The likeliest wet date is February 19, when 27% of years recorded at least a hundredth of an inch. The driest is June 23 at 2%. Summed across the calendar, that is about 43 wet dates a year.
The widest day
June 24 carries the biggest normal gap between afternoon and dawn, 28°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Alpine.
Monthly Precipitation
Average monthly rainfall
5.9 days with precipitation
8.0 days with precipitation
5.8 days with precipitation
4.3 days with precipitation
2.8 days with precipitation
0.7 days with precipitation
0.9 days with precipitation
0.7 days with precipitation
1.0 days with precipitation
2.4 days with precipitation
4.1 days with precipitation
6.1 days with precipitation
Alpine's wet season runs through the cold months
December, January and February carry 55% of the year's precipitation here, while June through August contribute 2%. That is the cool-season-dominant pattern of the West Coast and the higher inland West, where storm tracks swing south in winter and summer turns dry; the thermometer meanwhile shows an unusually narrow 23.2°F seasonal spread.
- Wettest month
- February, 3.6"
- Driest month
- July, 0.1"
- Wettest three months
- February, January, March (60% of the year)
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A cool-season label means the December-February share reaches 35%. Where snow falls, the monthly figures above report liquid-equivalent precipitation, so a wet winter month is not necessarily a rainy one.
When it rains in Alpine, it arrives in quantity
16.1" of precipitation falls across only about 43 wet days here, averaging 0.38 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 43 a year, 12% of all days
- Average depth per wet day
- 0.38 inches
- Most wet days
- February, about 8
- Fewest wet days
- June, about 1
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Frost Dates & Growing Season
First Fall Freeze
December 24
50% probability date
Last Spring Freeze
February 12
50% probability date
Growing Season
315 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,028
Higher = more heating needed
Cooling Degree Days
1,167
Higher = more cooling needed
Warmest Month
August
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside CA 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 (63°F here).
- Athens, AL 63°F · 0.0°F off
- Benton, AR 63°F · 0.0°F off
- Bishopville, SC 63°F · 0.0°F off
- Magnolia, AR 63°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (16.1" here), excluding temperature-peer places.
- Alpine, TX 16.1" · 0.0" off
- Wibaux, MT 16.1" · 0.0" off
- Tremonton, UT 16.1" · 0.0" off
- Tucumcari, NM 16.1" · 0.0" off
Data-derived climate profile
How Alpine's climate pattern fits together
mixed demand · dry · low swing
Local precipitation is sparse in this otherwise mixed profile. The station reports 16.1 inches annually, within PlainClimate's dry band. Snowfall is not added to the interpretation because its annual value is missing. The monthly distribution matters because the total alone does not reveal the timing.
The calendar stays thermally compact and dry. August and December mark the typical warm and cold ends of the calendar, only 23.2°F apart, while the annual precipitation total remains below PlainClimate's dry threshold. The annual average is 63°F. The monthly rows show whether that limited precipitation is spread through the year or concentrated in a shorter interval.
Alpine combines a compact 23.2°F annual temperature range with meaningful demand on both sides of the thermostat: 2,028 heating and 1,167 cooling degree days. The balance matters more here than either annual total in isolation.
Alpine has a long frost-free window of roughly 315 days, but the dry annual profile is a separate constraint. Growing-season length says when freezes are unlikely, not whether rainfall is sufficient.
These labels group NOAA 1991-2020 normals from Alpine'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 Alpine, the bands are descriptive ranges rather than an official NOAA classification or a forecast.
Questions about Alpine's climate
How much rain does Alpine get? ▼
How many days above 90°F does Alpine get? ▼
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 (USC00040136). 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 0601192), 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.