Ash Mtn, CA 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 Ash Mtn's primary NOAA station, ASH MTN.
The climate verdict for Ash Mtn
Ash Mtn, California has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 64°F. It scores 97/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 97% of them.
- 64°F
- yearly average temperature, NOAA normal
- 97/100
- comfort score, above 97% of station-mapped location scores
- 25.0"
- annual precipitation
- 272 days
- frost-free growing season
Ash Mtn: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00040343 · Ash Mtn, CA 64°F mean · 25.0" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-TOP · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 64°F
- RANK-UPPER #5,763
- PHOTO-FINISH ≈ Alvord
- PRCP-DRY 25.0"
- SWING-MID 36°F
- COMF-TOP 97/100
- LOAD-MIX H/C balanced
- STN-1 USC00040343
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Alvord, TX (+ 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.
- Ash Mtn (this station) 64°F
- Hot Bonham, TX 64°F
- Near Alvord, TX 64°F
- Near Andrews, SC 64°F
- Near Arkansas Post, AR 64°F
Climate Living Index · Ash Mtn
Ash Mtn: 82/100 · grade B
Ash Mtn publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Ash Mtn, not an official NOAA rating. Rankings still use Comfort Score 97/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Frost-free season | 272 days/year | 95/100 · A |
| Snowfall burden | 0.2 inches/year | 89/100 · A |
| Annual temperature balance | 63.5°F · 4.0° from 67.5°F | 88/100 · A |
| Normal heat + freeze calendar | 96 calendar days | 77/100 · B |
| Precipitation balance | 25.0 in · 10.0 from 35 in | 65/100 · C |
Ash Mtn · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Ash Mtn is a temperate Köppen climate: Csa
Coldest-month mean 47.4°F and warmest-month mean 83.0°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
- 83.0°F
- Coldest month
- 47.4°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 Ash Mtn sits across the climate record
Three NOAA fields for Ash Mtn's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 16% warmest
- Among 6,861 stations, Ash Mtn sits in the warmer third of annual means.
- Annual precipitation
- 34th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Narrower than 81%
- Warmest-to-coldest month gap for Ash Mtn is compact versus 6,861 complete station-years.
How Ash Mtn compares across U.S. station-mapped locations
Ash Mtn's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
97 Top 3% score exceeds 97% 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
Ash Mtn's measured station temperature trend
MethodologyAcross 72 complete annual observations from 1928 to 2019, ASH MTN warmed at a fitted rate of 0.09°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Ash Mtn primary station fitted change +0.09 °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 | 58°F (14°C) | 38°F (3°C) | 48°F (9°C) | 4.9" | 0.1" | 6.2 | 0.0 |
| February | 60°F (16°C) | 41°F (5°C) | 50°F (10°C) | 4.3" | 0.0" | 3.8 | 0.0 |
| March | 64°F (18°C) | 43°F (6°C) | 54°F (12°C) | 4.0" | 0.1" | 2.3 | 0.0 |
| April | 69°F (21°C) | 45°F (7°C) | 57°F (14°C) | 2.5" | 0.0" | 1.0 | 0.6 |
| May | 79°F (26°C) | 54°F (12°C) | 66°F (19°C) | 1.2" | 0.0" | 0.0 | 6.1 |
| June | 90°F (32°C) | 62°F (17°C) | 76°F (24°C) | 0.4" | 0.0" | 0.0 | 19.1 |
| July | 97°F (36°C) | 69°F (21°C) | 83°F (28°C) | 0.1" | 0.0" | 0.0 | 29.4 |
| August | 97°F (36°C) | 68°F (20°C) | 82°F (28°C) | 0.0" | 0.0" | 0.0 | 29.2 |
| September | 91°F (33°C) | 63°F (17°C) | 77°F (25°C) | 0.2" | 0.0" | 0.0 | 21.1 |
| October | 79°F (26°C) | 53°F (12°C) | 66°F (19°C) | 1.2" | 0.0" | 0.1 | 6.0 |
| November | 66°F (19°C) | 44°F (7°C) | 55°F (13°C) | 2.4" | 0.0" | 2.0 | 0.0 |
| December | 57°F (14°C) | 38°F (3°C) | 47°F (9°C) | 3.7" | 0.0" | 7.2 | 0.0 |
The year, day by day
The year in Ash Mtn runs from a mild 37°F around December 23 to 98°F at the peak near July 22, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from June 17 through September 20, covering 96 dates. The broader mild season, normal highs of 70°F or more, runs April 21 to November 5.
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 December 23.
Where the wet dates fall
The likeliest wet date is February 20, when 38% of years recorded at least a hundredth of an inch. The driest is August 17 at 2%. Summed across the calendar, that is about 64 wet dates a year.
The widest day
September 1 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 Ash Mtn.
Where Ash Mtn Stands Nationally
Summers here run among the most heat-heavy normals calendars in the country: on about 96 days a year the normal daily high itself reaches 90°F — a count fewer than one station in ten exceeds.
Ash Mtn earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 0.1"
9.3 days with precipitation
10.6 days with precipitation
Snow: 0.1"
9.6 days with precipitation
6.6 days with precipitation
4.6 days with precipitation
1.3 days with precipitation
0.9 days with precipitation
0.4 days with precipitation
1.5 days with precipitation
3.5 days with precipitation
6.1 days with precipitation
8.4 days with precipitation
Ash Mtn's wet season runs through the cold months
December, January and February carry 52% 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 a 35.6°F seasonal spread.
- Wettest month
- January, 4.9"
- Driest month
- August, 0.0"
- Wettest three months
- January, February, March (53% 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 Ash Mtn, it arrives in quantity
25.0" of precipitation falls across only about 63 wet days here, averaging 0.40 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 63 a year, 17% of all days
- Average depth per wet day
- 0.40 inches
- Most wet days
- February, about 11
- Fewest wet days
- August, about 0
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.
Snow reaches Ash Mtn, but rarely amounts to much
The normals record 0.2 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
December 9
50% probability date
Last Spring Freeze
March 12
50% probability date
Growing Season
272 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,606
Higher = more heating needed
Cooling Degree Days
2,083
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside CA closest to Ash Mtn 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 (64°F here).
- Alvord, TX 64°F · 0.0°F off
- Andrews, SC 64°F · 0.0°F off
- Bonham, TX 64°F · 0.0°F off
- Hemingway, SC 64°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (25.0" here), excluding temperature-peer places.
- Wingate, TX 25.0" · 0.0" off
- Alta, WY 25.0" · 0.0" off
- Dilley, TX 25.0" · 0.0" off
- Iliamna, AK 25.0" · 0.0" off
Data-derived climate profile
How Ash Mtn's climate pattern fits together
mixed demand · moderate · mid swing
July and December mark the typical warm and cold ends of the calendar in Ash Mtn's middle-range seasonal profile. The measured spread is 35.6°F. The annual average is 64°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Heating and cooling both register in Ash Mtn's normal, at 2,606 and 2,083 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.
The frost-free window extends for about 272 days. That is a long calendar measure, but it is not a forecast and does not combine heat, rainfall, soil, or local elevation into a planting recommendation.
Ash Mtn's 25.0 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Recorded annual snowfall is negligible. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Ash Mtn'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 Ash Mtn, the bands are descriptive ranges rather than an official NOAA classification or a forecast.
Questions about Ash Mtn's climate
How much rain does Ash Mtn get? ▼
How many days above 90°F does Ash Mtn get? ▼
How much energy does heating and cooling require in Ash Mtn? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Ash Mtn's primary station: ASH MTN (USC00040343). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Ash Mtn; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Ash Mtn 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.