Bay St Louis Nasa, MS Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Bay St Louis Nasa's primary NOAA station, BAY ST LOUIS NASA.
The climate verdict for Bay St Louis Nasa
Water is the standout signal in Bay St Louis Nasa, Mississippi: 64.0 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 66°F. Its climate comfort score of 73/100 (good) lands mid-pack nationally, exceeding 66% of station-mapped location scores.
- 66°F
- yearly average temperature, NOAA normal
- 73/100
- comfort score, above 66% of station-mapped location scores
- 64.0"
- annual precipitation
- 258 days
- frost-free growing season
Bay St Louis Nasa: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00220521 · Bay St Louis Nasa, MS 66°F mean · 64.0" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-WET · SWING-MID · COMF-MID · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 66°F
- RANK-UPPER #6,106
- PHOTO-FINISH ≈ Ashburn
- PRCP-WET 64.0"
- SWING-MID 30°F
- COMF-MID 73/100
- LOAD-MIX H/C balanced
- STN-1 USC00220521
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Ashburn, GA (+ 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 MS station list.
- Bay St Louis Na… (this station) 66°F
- Hot Center, TX 66°F
- Near Ashburn, GA 66°F
- Near Brownwood, TX 66°F
- Near Catalina State…, AZ 66°F
Bay St Louis Nasa sits in Mississippi, the #5 hottest U.S. state at 64.1°F statewide annual average - see all 50 hottest states ranked by NOAA normals
Climate Living Index · Bay St Louis Nasa
Bay St Louis Nasa: 77/100 · grade B
Bay St Louis Nasa publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Bay St Louis Nasa, not an official NOAA rating. Rankings still use Comfort Score 73/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 0 calendar days | 100/100 · A |
| Annual temperature balance | 65.6°F · 1.9° from 67.5°F | 93/100 · A |
| Frost-free season | 258 days/year | 91/100 · A |
| Precipitation balance | 64.0 in · 29.0 from 35 in | 3/100 · F |
Bay St Louis Nasa · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Bay St Louis Nasa is a temperate Köppen climate: Cfa
Coldest-month mean 49.7°F and warmest-month mean 80.1°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
- 80.1°F
- Coldest month
- 49.7°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 Bay St Louis Nasa sits across the climate record
Three NOAA fields for Bay St Louis Nasa's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 11% warmest
- Among 6,861 stations, Bay St Louis Nasa sits in the warmer third of annual means.
- Annual precipitation
- Top 3% wettest
- Bay St Louis Nasa's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 90%
- Warmest-to-coldest month gap for Bay St Louis Nasa is compact versus 6,861 complete station-years.
How Bay St Louis Nasa compares across U.S. station-mapped locations
Bay St Louis Nasa's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
73 Top 34% score exceeds 66% 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 | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 60°F (15°C) | 40°F (4°C) | 50°F (10°C) | 5.6" | 9.3 | 0.0 |
| February | 64°F (18°C) | 43°F (6°C) | 53°F (12°C) | 4.1" | 5.9 | 0.0 |
| March | 69°F (20°C) | 48°F (9°C) | 59°F (15°C) | 4.3" | 2.2 | 0.0 |
| April | 75°F (24°C) | 54°F (12°C) | 64°F (18°C) | 6.5" | 0.0 | 0.2 |
| May | 82°F (28°C) | 62°F (17°C) | 72°F (22°C) | 4.5" | 0.0 | 4.7 |
| June | 87°F (30°C) | 69°F (21°C) | 78°F (26°C) | 5.6" | 0.0 | 16.0 |
| July | 89°F (32°C) | 71°F (22°C) | 80°F (27°C) | 7.8" | 0.0 | 21.6 |
| August | 89°F (32°C) | 71°F (22°C) | 80°F (27°C) | 6.5" | 0.0 | 23.6 |
| September | 85°F (29°C) | 67°F (19°C) | 76°F (24°C) | 5.0" | 0.0 | 12.5 |
| October | 78°F (25°C) | 56°F (14°C) | 67°F (19°C) | 5.1" | 0.1 | 1.0 |
| November | 69°F (21°C) | 45°F (7°C) | 57°F (14°C) | 4.5" | 3.5 | 0.0 |
| December | 61°F (16°C) | 41°F (5°C) | 51°F (11°C) | 4.5" | 10.0 | 0.0 |
The year, day by day
The calendar barely moves in Bay St Louis Nasa: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 40°F near January 16 and 89°F near July 28.
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 40°F around January 16.
Where the wet dates fall
The likeliest wet date is July 16, when 40% of years recorded at least a hundredth of an inch. The driest is October 14 at 19%. Summed across the calendar, that is about 95 wet dates a year.
The widest day
November 9 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 Bay St Louis Nasa.
Where Bay St Louis Nasa Stands Nationally
This is one of the wettest normals climates ranked: about 64 inches of precipitation in a normal year, a total fewer than one station in ten surpasses.
Bay St Louis Nasa 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
9.2 days with precipitation
7.0 days with precipitation
6.6 days with precipitation
5.8 days with precipitation
6.1 days with precipitation
10.7 days with precipitation
12.3 days with precipitation
10.0 days with precipitation
7.9 days with precipitation
5.6 days with precipitation
6.6 days with precipitation
6.8 days with precipitation
Bay St Louis Nasa 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 22%, with neither reaching the 35% that would mark a distinct wet season. Bay St Louis Nasa has no dry season to plan around, though it does carry a 30.4°F seasonal spread.
The gap between the wettest and driest month still matters: July averages 7.8" and February 4.1". The three wettest months together take 33% 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 Bay St Louis Nasa, it arrives in quantity
64.0" of precipitation falls across only about 95 wet days here, averaging 0.68 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 95 a year, 26% of all days
- Average depth per wet day
- 0.68 inches
- Most wet days
- July, about 12
- Fewest wet days
- October, about 6
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 19
50% probability date
Last Spring Freeze
March 6
50% probability date
Growing Season
258 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,911
Higher = more heating needed
Cooling Degree Days
2,140
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside MS closest to Bay St Louis Nasa 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 (66°F here).
- Ashburn, GA 66°F · 0.0°F off
- Brownwood, TX 66°F · 0.0°F off
- Center, TX 66°F · 0.0°F off
- Clinton, LA 66°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (64.0" here), excluding temperature-peer places.
- Sewanee, TN 64.0" · 0.0" off
- Winfield, AL 64.1" · 0.1" off
- Bogalusa, LA 63.9" · 0.1" off
- Port Salerno, FL 64.2" · 0.1" off
Data-derived climate profile
How Bay St Louis Nasa's climate pattern fits together
mixed demand · wet · mid swing
Water is prominent even though neither heating nor cooling wholly defines the record. Bay St Louis Nasa averages 64.0 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 Bay St Louis Nasa's middle-range seasonal profile. The measured spread is 30.4°F. The annual average is 66°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Heating and cooling both register in Bay St Louis Nasa's normal, at 1,911 and 2,140 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 258 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 Bay St Louis Nasa'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 Bay St Louis Nasa, the bands are descriptive ranges rather than an official NOAA classification or a forecast.
Questions about Bay St Louis Nasa's climate
How much rain does Bay St Louis Nasa get? ▼
How many days above 90°F does Bay St Louis Nasa get? ▼
How much energy does heating and cooling require in Bay St Louis Nasa? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Bay St Louis Nasa's primary station: BAY ST LOUIS NASA (USC00220521). 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 Bay St Louis Nasa; 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 Bay St Louis Nasa 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.