Alabaster Shelby County, AL 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 Alabaster Shelby County's primary NOAA station, ALABASTER SHELBY CO AP.
The climate verdict for Alabaster Shelby County
Water is the standout signal in Alabaster Shelby County, Alabama: 56.2 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 64°F. It scores 85/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 85% of them.
- 64°F
- annual average temperature (NOAA normal)
- 85/100
- comfort score, above 85% of station-mapped location scores
- 56.2"
- annual precipitation
- 249 days
- frost-free days per growing season
Alabaster Shelby County: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00053864 · Alabaster Shelby County, AL 64°F mean · 56.2" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-WET · SWING-MID · COMF-TOP · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 64°F
- RANK-UPPER #5,900
- PHOTO-FINISH ≈ Ashland
- PRCP-WET 56.2"
- SWING-MID 36°F
- COMF-TOP 85/100
- LOAD-MIX H/C balanced
- STN-1 USW00053864
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Ashland, LA (+ 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 AL station list.
- Alabaster Shelb… (this station) 64°F
- Hot Benton, LA 64°F
- Near Ashland, LA 64°F
- Near Bamberg, SC 64°F
- Near Belzoni, MS 64°F
Climate Living Index · Alabaster Shelby County
Alabaster Shelby County: 77/100 · grade B
Alabaster Shelby County publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Alabaster Shelby County, not an official NOAA rating. Rankings still use Comfort Score 85/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Annual temperature balance | 64.4°F · 3.1° from 67.5°F | 91/100 · A |
| Normal heat + freeze calendar | 59 calendar days | 89/100 · A |
| Frost-free season | 249 days/year | 88/100 · A |
| Precipitation balance | 56.2 in · 21.2 from 35 in | 24/100 · F |
Alabaster Shelby County · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Alabaster Shelby County is a temperate Köppen climate: Cfa
Coldest-month mean 45.7°F and warmest-month mean 81.3°F place this station in temperate, no dry season, hot summer climates (Cfa). Class Cfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, no dry season, hot summer.
- Köppen code
- Cfa
- Group
- Temperate
- Warmest month
- 81.3°F
- Coldest month
- 45.7°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 Alabaster Shelby County sits across the climate record
Three NOAA fields for Alabaster Shelby County's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 14% warmest
- Among 6,861 stations, Alabaster Shelby County sits in the warmer third of annual means.
- Annual precipitation
- Top 9% wettest
- Alabaster Shelby County's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 81%
- Warmest-to-coldest month gap for Alabaster Shelby County is compact versus 6,861 complete station-years.
How Alabaster Shelby County compares across U.S. station-mapped locations
Alabaster Shelby County's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
85 Top 15% score exceeds 85% 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 | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 56°F (13°C) | 36°F (2°C) | 46°F (8°C) | 5.3" | 14.4 | 0.0 |
| February | 61°F (16°C) | 39°F (4°C) | 50°F (10°C) | 5.8" | 8.1 | 0.0 |
| March | 68°F (20°C) | 46°F (8°C) | 57°F (14°C) | 5.4" | 3.0 | 0.0 |
| April | 75°F (24°C) | 53°F (11°C) | 64°F (18°C) | 5.1" | 0.3 | 0.0 |
| May | 83°F (28°C) | 61°F (16°C) | 72°F (22°C) | 4.2" | 0.0 | 3.1 |
| June | 88°F (31°C) | 69°F (20°C) | 79°F (26°C) | 4.6" | 0.0 | 11.7 |
| July | 91°F (33°C) | 72°F (22°C) | 81°F (27°C) | 4.9" | 0.0 | 20.0 |
| August | 91°F (33°C) | 71°F (22°C) | 81°F (27°C) | 4.7" | 0.0 | 18.5 |
| September | 86°F (30°C) | 66°F (19°C) | 76°F (24°C) | 3.6" | 0.0 | 9.4 |
| October | 76°F (25°C) | 54°F (12°C) | 65°F (18°C) | 3.0" | 0.1 | 0.5 |
| November | 66°F (19°C) | 43°F (6°C) | 55°F (13°C) | 4.6" | 4.7 | 0.0 |
| December | 58°F (14°C) | 38°F (3°C) | 48°F (9°C) | 5.1" | 11.9 | 0.0 |
The year, day by day
The year in Alabaster Shelby County runs from a mild 35°F around January 14 to 92°F at the peak near July 23, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from June 29 through August 26, covering 59 dates. The broader mild season, normal highs of 70°F or more, runs March 24 to November 2.
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 35°F around January 14.
Where the wet dates fall
The likeliest wet date is July 16, when 41% of years recorded at least a hundredth of an inch. The driest is September 29 at 27%. Summed across the calendar, that is about 126 wet dates a year.
The widest day
November 3 carries the biggest normal gap between afternoon and dawn, 24°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Alabaster Shelby County.
Where Alabaster Shelby County Stands Nationally
This is one of the wettest normals climates ranked: about 56 inches of precipitation in a normal year, a total fewer than one station in ten surpasses.
Alabaster Shelby County 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
10.8 days with precipitation
11.4 days with precipitation
11.5 days with precipitation
9.7 days with precipitation
9.9 days with precipitation
11.5 days with precipitation
12.8 days with precipitation
11.5 days with precipitation
8.0 days with precipitation
8.2 days with precipitation
9.0 days with precipitation
11.3 days with precipitation
Alabaster Shelby County spreads its precipitation across the year
Neither half of the year dominates here: June through August take 25% of the annual total and December through February 29%, with neither reaching the 35% that would mark a distinct wet season. Alabaster Shelby County has no dry season to plan around, though it does carry a 35.6°F seasonal spread.
The gap between the wettest and driest month still matters: February averages 5.8" and October 3.0". The three wettest months together take 29% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
When it rains in Alabaster Shelby County, it arrives in quantity
56.2" of precipitation falls across only about 126 wet days here, averaging 0.45 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 126 a year, 34% of all days
- Average depth per wet day
- 0.45 inches
- Most wet days
- July, about 13
- Fewest wet days
- September, about 8
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
November 16
50% probability date
Last Spring Freeze
March 12
50% probability date
Growing Season
249 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,378
Higher = more heating needed
Cooling Degree Days
2,182
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside AL closest to Alabaster Shelby County 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).
- Ashland, LA 64°F · 0.0°F off
- Bamberg, SC 64°F · 0.0°F off
- Belzoni, MS 64°F · 0.0°F off
- Benton, LA 64°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (56.2" here), excluding temperature-peer places.
- Sparkman, AR 56.2" · 0.0" off
- Mableton, GA 56.2" · 0.0" off
- Pikeville, TN 56.2" · 0.0" off
- Brownsville, TN 56.1" · 0.1" off
Data-derived climate profile
How Alabaster Shelby County's climate pattern fits together
mixed demand · wet · mid swing
Water is prominent even though neither heating nor cooling wholly defines the record. Alabaster Shelby County averages 56.2 inches of precipitation a year. Snowfall is not added to the interpretation because its annual value is missing. The monthly table supplies the seasonal distribution hidden by that annual total.
July and January mark the typical warm and cold ends of the calendar in Alabaster Shelby County'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 Alabaster Shelby County's normal, at 2,378 and 2,182 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 249 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.
These labels group NOAA 1991-2020 normals from Alabaster Shelby County'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 Alabaster Shelby County, the bands are descriptive ranges rather than an official NOAA classification or a forecast.
Questions about Alabaster Shelby County's climate
How much rain does Alabaster Shelby County get? ▼
How many days above 90°F does Alabaster Shelby County get? ▼
How much energy does heating and cooling require in Alabaster Shelby County? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Alabaster Shelby County's primary station: ALABASTER SHELBY CO AP (USW00053864). 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 Alabaster Shelby County; 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 Alabaster Shelby County 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.