Dauphin Island, AL 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 Dauphin Island's primary NOAA station, DAUPHIN IS #2.
The climate verdict for Dauphin Island
Warm-season cooling demand defines Dauphin Island, Alabama, running at more than twice its heating total. The NOAA normal records an annual average of 69°F. It scores 76/100 for climate comfort (good), putting it in the top third of station-mapped location scores and exceeding 69% of them.
- 69°F
- yearly average temperature, NOAA normal
- 76/100
- comfort score, above 69% of station-mapped location scores
- 61.1"
- precipitation, annual total
Dauphin Island: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00012172 · Dauphin Island, AL 69°F mean · 61.1" precip
TEMP-MILD · RANK-WARM · PHOTO-FINISH · PRCP-WET · SWING-MID · COMF-TOP · LOAD-COOL · STN-1 · BOOK-FULL
- TEMP-MILD 69°F
- RANK-WARM #6,449
- PHOTO-FINISH ≈ Whiting Field N…
- PRCP-WET 61.1"
- SWING-MID 31°F
- COMF-TOP 76/100
- LOAD-COOL 2,883 CDD
- STN-1 USC00012172
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Whiting Field Nas South, FL (+ 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.
- Dauphin Island (this station) 69°F
- Cold Reserve, LA 69°F
- Hot Panama City, FL 69°F
- Near Whiting Field N…, FL 69°F
- Near Fargo, GA 69°F
Climate Living Index · Dauphin Island
Dauphin Island: 78/100 · grade B
Dauphin Island publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Dauphin Island, not an official NOAA rating. Rankings still use Comfort Score 76/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 0 calendar days | 100/100 · A |
| Annual temperature balance | 69.2°F · 1.7° from 67.5°F | 94/100 · A |
| Snowfall burden | 0.0 inches/year | 90/100 · A |
| Precipitation balance | 61.1 in · 26.1 from 35 in | 9/100 · F |
Dauphin Island · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Dauphin Island is a temperate Köppen climate: Cfa
Coldest-month mean 52.3°F and warmest-month mean 83.2°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
- 83.2°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 · cooling-led station
Where Dauphin Island sits across the climate record
Three NOAA fields for Dauphin Island's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 6% warmest
- Among 6,861 stations, Dauphin Island sits in the warmer third of annual means.
- Annual precipitation
- Top 5% wettest
- Dauphin Island's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 89%
- Warmest-to-coldest month gap for Dauphin Island is compact versus 6,861 complete station-years.
How Dauphin Island compares across U.S. station-mapped locations
Dauphin Island's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
76 Top 31% score exceeds 69% 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%). This entry sits in this band.
- 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 | 59°F (15°C) | 46°F (8°C) | 52°F (11°C) | 5.2" | 0.0" | 2.0 | 0.0 |
| February | 62°F (16°C) | 49°F (10°C) | 55°F (13°C) | 4.3" | 0.0" | 0.7 | 0.0 |
| March | 67°F (19°C) | 56°F (13°C) | 61°F (16°C) | 4.9" | 0.0" | 0.2 | 0.0 |
| April | 74°F (23°C) | 63°F (17°C) | 68°F (20°C) | 5.2" | 0.0" | 0.0 | 0.0 |
| May | 81°F (27°C) | 71°F (22°C) | 76°F (24°C) | 5.0" | 0.0" | 0.0 | 0.6 |
| June | 86°F (30°C) | 76°F (25°C) | 81°F (27°C) | 5.9" | 0.0" | 0.0 | 5.6 |
| July | 88°F (31°C) | 78°F (26°C) | 83°F (28°C) | 6.8" | 0.0" | 0.0 | 12.1 |
| August | 88°F (31°C) | 78°F (26°C) | 83°F (28°C) | 6.0" | 0.0" | 0.0 | 12.3 |
| September | 85°F (30°C) | 76°F (24°C) | 80°F (27°C) | 5.2" | 0.0" | 0.0 | 4.7 |
| October | 77°F (25°C) | 67°F (19°C) | 72°F (22°C) | 3.5" | 0.0" | 0.0 | 0.2 |
| November | 68°F (20°C) | 56°F (13°C) | 62°F (17°C) | 3.9" | 0.0" | 0.0 | 0.0 |
| December | 61°F (16°C) | 49°F (10°C) | 55°F (13°C) | 5.1" | 0.0" | 0.6 | 0.0 |
The year, day by day
The calendar barely moves in Dauphin Island: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 46°F near January 15 and 88°F near July 21.
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 46°F around January 15.
Where the wet dates fall
The likeliest wet date is August 1, when 40% of years recorded at least a hundredth of an inch. The driest is May 5 at 22%. Summed across the calendar, that is about 114 wet dates a year.
The widest day
January 24 carries the biggest normal gap between afternoon and dawn, 13°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Dauphin Island.
Where Dauphin Island Stands Nationally
This is one of the wettest normals climates ranked: about 61 inches of precipitation in a normal year, a total fewer than one station in ten surpasses.
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 13°F.
Dauphin Island 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
12.2 days with precipitation
10.2 days with precipitation
9.5 days with precipitation
7.4 days with precipitation
6.8 days with precipitation
10.2 days with precipitation
11.6 days with precipitation
12.1 days with precipitation
8.4 days with precipitation
6.8 days with precipitation
8.1 days with precipitation
11.5 days with precipitation
Dauphin Island spreads its precipitation across the year
Neither half of the year dominates here: June through August take 31% of the annual total and December through February 24%, with neither reaching the 35% that would mark a distinct wet season. Dauphin Island has no dry season to plan around, though it does carry a 30.9°F seasonal spread.
The gap between the wettest and driest month still matters: July averages 6.8" and October 3.5". The three wettest months together take 31% 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 Dauphin Island, it arrives in quantity
61.1" of precipitation falls across only about 115 wet days here, averaging 0.53 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 115 a year, 31% of all days
- Average depth per wet day
- 0.53 inches
- Most wet days
- January, about 12
- Fewest wet days
- May, about 7
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.
Dauphin Island's record shows no measurable snowfall
This station measured snowfall across the 1991-2020 period and recorded none: the annual normal is 0.0 inches. That is a measured zero rather than missing data, which is a meaningful distinction here , most stations in the database simply do not report snow at all, and those pages say nothing about it.
A thirty-year normal of zero describes the typical year at this station. It is not a claim that snow has never fallen in the area.
Frost Dates & Growing Season
First Fall Freeze
January 6
50% probability date
Last Spring Freeze
January 31
50% probability date
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,323
Higher = more heating needed
Cooling Degree Days
2,883
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside AL closest to Dauphin Island 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 (69°F here).
- Mayo, FL 69°F · 0.0°F off
- Alvin, TX 69°F · 0.1°F off
- Fargo, GA 69°F · 0.1°F off
- Jacksonville, FL 69°F · 0.1°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (61.1" here), excluding temperature-peer places.
- Walhalla, SC 61.1" · 0.0" off
- Morehead City, NC 61.2" · 0.1" off
- Cave Junction, OR 61.2" · 0.1" off
- Panama City, FL 61.3" · 0.2" off
Data-derived climate profile
How Dauphin Island's climate pattern fits together
cooling led · wet · mid swing
Air-conditioning demand is the clearest thermal signal here. Dauphin Island accumulates 2,883 cooling degree days, more than twice its 1,323 heating total; the monthly table shows when that imbalance builds rather than treating it as a year-round condition.
Warm-season demand is paired with a wet annual normal: 61.1 inches of precipitation at Dauphin Island. Recorded annual snowfall is negligible. The month-by-month bars distinguish a concentrated wet season from moisture spread across the calendar.
July and January mark the typical warm and cold ends of the calendar in Dauphin Island's middle-range seasonal profile. The measured spread is 30.9°F. The annual average is 69°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
A frost-free growing-season length is not available for Dauphin Island. That missing field is kept separate from the observed temperature and precipitation record rather than filled from a regional estimate.
These labels group NOAA 1991-2020 normals from Dauphin Island's primary station, so the summer figures are a thirty-year average rather than a ceiling: individual years have run hotter and will again. For Dauphin Island that means a descriptive range only — not an official NOAA classification and not a prediction for next summer.
Questions about Dauphin Island's climate
How much rain does Dauphin Island get? ▼
How many days above 90°F does Dauphin Island get? ▼
How much energy does heating and cooling require in Dauphin Island? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Dauphin Island's primary station: DAUPHIN IS #2 (USC00012172). 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 0119744). Match rule for Dauphin Island: 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 Dauphin Island 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.