Climate Comfort Score
72/100
Good
NOAA 1991–2020 normals 66°F annual avg Public-domain federal data
Bay ST Louis Nasa, MS Climate
Pulled from NOAA NCEI 1991–2020 normals →: average temperature, precipitation, and comfort score
- 66°F
- Avg annual temp
- 72/100
- Comfort score
- 64.0"
- Annual precip
- 258d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Bay ST Louis Nasa
Bay ST Louis Nasa, Mississippi averages 66°F a year and scores 72/100 on the comfort index - good, milder than 66% of U.S. cities.
- 66°F
- yearly average temperature, NOAA normal
- 72/100
- comfort score, milder than 66% of U.S. cities
- 64.0"
- annual precipitation
- 258 days
- frost-free growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
66°F (19°C)
Avg High
75°F
Avg Low
56°F
Annual Precip
64.0"
Comfort Score
72/100
Good
Avg Annual Temperature
66°F
30-year mean (NOAA NCEI)
Annual Precipitation
64.0"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Bay ST Louis Nasa) 72.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Bay ST Louis Nasa area.
How Bay ST Louis Nasa compares to every U.S. city
Bay ST Louis Nasa's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
72 Top 34% higher than 66% of 6,915 US cities
Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Warming context for Bay ST Louis Nasa
MethodologyThe chart below traces how the U.S. land temperature anomaly has moved against the global mean since 1900. For Bay ST Louis Nasa, the NOAA 1991-2020 normal captures average conditions across that spread - notably, the most recent decade runs warmer than the 30-year mean itself.
- United States land mean (NOAA NCEI) +0.11 °C/decade
- Global anomaly (NASA GISTEMP) +0.11 °C/decade
- Paris Agreement thresholds 1.5°C / 2.0°C
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 |
Monthly Precipitation
Average monthly rainfall
January 5.6"
9.2 days with precipitation
February 4.1"
7.0 days with precipitation
March 4.3"
6.6 days with precipitation
April 6.5"
5.8 days with precipitation
May 4.5"
6.1 days with precipitation
June 5.6"
10.7 days with precipitation
July 7.8"
12.3 days with precipitation
August 6.5"
10.0 days with precipitation
September 5.0"
7.9 days with precipitation
October 5.1"
5.6 days with precipitation
November 4.5"
6.6 days with precipitation
December 4.5"
6.8 days with precipitation
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
What Bay ST Louis Nasa's climate means for you
Bay ST Louis Nasa runs 66°F a year - peaking in July, coldest in January.
- Gardeners get about 258 frost-free days, with the last spring freeze near March 6 - plan the planting calendar around it, not the regional average.
- Energy bills track 1,911 heating and 2,140 cooling degree days a year, higher means the furnace or AC runs more.
- Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings
These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.
Climate Guides
Climate Insight: Bay ST Louis Nasa, MS
Bay ST Louis Nasa, Mississippi runs an annual average of 66°F, ranging from a mean daily high of 75°F to a mean daily low of 56°F, per NOAA's 1991–2020 climate normals. July is typically the warmest month of the year, while January is the coldest. Drawn from station USC00220521, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Beyond temperature, Bay ST Louis Nasa averages 64.0 inches of precipitation annually, predominantly as rainfall - a real factor for anyone planning to live, garden, or travel here. The frost-free season averages 258 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near March 6 and the first fall freeze near November 19. Turning to energy use, 1,911 heating degree days and 2,140 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Bay ST Louis Nasa scores 72/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows, shoulder seasons for mild highs and lows, peak summer for July-driven heat, or deep winter for January-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.
Frequently Asked Questions
What is the average temperature in Bay ST Louis Nasa, MS? ▼
The average annual temperature in Bay ST Louis Nasa, Mississippi is 66°F. The warmest month averages 89°F (32°C) and the coldest averages 40°F (4°C).
How much rain does Bay ST Louis Nasa get? ▼
Bay ST Louis Nasa receives 64.0 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Bay ST Louis Nasa? ▼
Bay ST Louis Nasa has a climate comfort score of 72/100 (Good), milder than 66% of U.S. cities in the PlainClimate database.
When is the growing season in Bay ST Louis Nasa? ▼
Bay ST Louis Nasa has approximately 258 frost-free days per year, with the last spring freeze around March 6 and the first fall freeze around November 19.
How much energy does heating and cooling require in Bay ST Louis Nasa? ▼
Bay ST Louis Nasa has 1,911 heating degree days and 2,140 cooling degree days annually, a fairly balanced heating/cooling split. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Bay ST Louis Nasa climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00220521 near Bay ST Louis Nasa.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00220521. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.