Climate Comfort Score
N/A
NOAA 1991-2020 normals
NOAA 1991–2020 normals Incorporated place · exact Census match 75°F annual avg Public-domain federal data
Marco Island, FL Climate: Temperature & Rain by Month
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 75°F
- Avg annual temp
- 53.3"
- Annual precip
30-year climate normals (1991-2020) from Marco Island's primary NOAA station, MARCO IS.
The climate verdict for Marco Island
Warm-season cooling demand defines Marco Island, Florida, running at more than twice its heating total. The NOAA normal records an annual average of 75°F. August is the warmest month at 84°F and January the coldest at 64°F.
- 75°F
- yearly average temperature, NOAA normal
- 53.3"
- yearly precipitation total
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
75°F (24°C)
Avg High
84°F
Avg Low
67°F
Annual Precip
53.3"
Marco Island sits in Florida, the #1 hottest U.S. state at 72.6°F statewide annual average - see all 50 hottest states ranked by NOAA normals
Avg Annual Temperature
75°F
30-year mean (NOAA NCEI)
Annual Precipitation
53.3"
Liquid-equivalent total
How Marco Island compares with its closest stations
Against the 6 closest stations in the record, Marco Island averages 75°F a year, warmer than Naples, FL (74°F), and cooler than Naples Muni, FL (76°F) and Everglades, FL (76°F).
Corpus-relative placement
Where Marco Island sits across the climate record
These comparisons place this primary-station normal among station-mapped locations with the same NOAA 1991–2020 fields.
- Annual temperature
- Warmer than 99%
- of 6,861 measured location normals.
- Annual precipitation
- Wetter than 87%
- of 6,352 measured location normals.
- Seasonal temperature swing
- Larger than 3%
- of 6,861 complete location-year normals.
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 74°F (23°C) | 55°F (13°C) | 64°F (18°C) | 2.5" | 0.3 | 0.0 |
| February | 76°F (25°C) | 57°F (14°C) | 67°F (19°C) | 1.9" | 0.1 | 0.0 |
| March | 79°F (26°C) | 60°F (16°C) | 69°F (21°C) | 2.0" | 0.0 | 0.0 |
| April | 83°F (28°C) | 65°F (18°C) | 74°F (23°C) | 2.5" | 0.0 | 0.9 |
| May | 88°F (31°C) | 70°F (21°C) | 79°F (26°C) | 3.4" | 0.0 | 5.3 |
| June | 90°F (32°C) | 74°F (23°C) | 82°F (28°C) | 8.4" | 0.0 | 14.2 |
| July | 91°F (33°C) | 76°F (24°C) | 84°F (29°C) | 6.6" | 0.0 | 19.0 |
| August | 92°F (33°C) | 76°F (25°C) | 84°F (29°C) | 9.2" | 0.0 | 20.2 |
| September | 90°F (32°C) | 75°F (24°C) | 83°F (28°C) | 9.9" | 0.0 | 15.1 |
| October | 87°F (31°C) | 71°F (22°C) | 79°F (26°C) | 3.2" | 0.0 | 5.9 |
| November | 81°F (27°C) | 63°F (17°C) | 72°F (22°C) | 2.0" | 0.0 | 0.4 |
| December | 77°F (25°C) | 59°F (15°C) | 68°F (20°C) | 1.7" | 0.3 | 0.0 |
The year, day by day
The year in Marco Island runs from a mild 54°F around January 17 to 92°F at the peak near August 8, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from June 12 through September 15, covering 96 dates. The broader mild season, normal highs of 70°F or more, runs January 1 to December 31.
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 54°F around January 17.
Where the wet dates fall
The likeliest wet date is August 26, when 63% of years recorded at least a hundredth of an inch. The driest is March 7 at 14%. Summed across the calendar, that is about 115 wet dates a year.
The widest day
March 1 carries the biggest normal gap between afternoon and dawn, 19°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Marco Island.
Where Marco Island 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.
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 19°F.
Standing computed against the distribution of 6,860 NOAA 1991–2020 normals stations in the PlainClimate database; only nationally notable standings are shown.
Monthly Precipitation
Average monthly rainfall
January 2.5"
5.3 days with precipitation
February 1.9"
4.7 days with precipitation
March 2.0"
4.3 days with precipitation
April 2.5"
5.0 days with precipitation
May 3.4"
8.7 days with precipitation
June 8.4"
15.9 days with precipitation
July 6.6"
15.8 days with precipitation
August 9.2"
18.8 days with precipitation
September 9.9"
17.5 days with precipitation
October 3.2"
8.6 days with precipitation
November 2.0"
5.4 days with precipitation
December 1.7"
5.1 days with precipitation
Marco Island runs a summer-peaked wet season
45% of Marco Island's yearly precipitation falls in June, July and August alone, against the 25% an evenly spread year would give those three months. The wettest month is September at 9.9", on an unusually narrow 19.4°F seasonal spread. Warm-season convection and, across the Southwest, the North American monsoon produce this shape: rain arrives in short heavy bursts during the hottest part of the year rather than as long cool-season soaking.
- Wettest three months: September, August, June, taking 51% of the annual total between them.
- Driest month: December at 1.7".
- Winter share: 11% falls in December, January and February.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A summer-peaked label means the June-August share reaches 35%; it describes timing across an average year, not any single season, and says nothing about how heavy an individual storm can be.
When it rains in Marco Island, it arrives in quantity
53.3" of precipitation falls across only about 115 wet days here, averaging 0.46 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, 32% of all days
- Average depth per wet day
- 0.46 inches
- Most wet days
- August, about 19
- Fewest wet days
- March, about 4
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
N/A
50% probability date
Last Spring Freeze
N/A
50% probability date
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
281
Higher = more heating needed
Cooling Degree Days
4,057
Higher = more cooling needed
Warmest Month
August
Coldest Month
January
Places with a similar climate profile
NOAA 1991–2020 annual normals connect this location to non-geographic peers. Temperature peers use annual mean temperature; energy peers use both heating and cooling degree days.
Closest annual-temperature peers
What Marco Island's climate means for you
Marco Island runs 75°F a year - peaking in August, coldest in January.
- Air conditioning drives the bills rather than the furnace: 4,057 cooling degree days against 281 for heating.
- See how Marco Island lines up against the rest of Florida and the national rankings. See rankings
Climate Guides
Data-derived climate profile
How Marco Island's climate pattern fits together
cooling led · wet · low swing
Warm-season load persists through a relatively even calendar in Marco Island. Cooling totals 4,057 degree days, more than double the 281 heating measure, and the 19.4°F seasonal range is compact rather than sharply divided.
Warm-season demand is paired with a wet annual normal: 53.3 inches of precipitation at Marco Island. Snowfall is not added to the interpretation because its annual value is missing. The month-by-month bars distinguish a concentrated wet season from moisture spread across the calendar.
Marco Island's 19.4°F seasonal spread is compact even though precipitation is abundant. August and January mark the typical warm and cold ends of the calendar. The annual average is 75°F. Temperature is relatively steady; the monthly rows show how rain and snow observations vary across the calendar.
A frost-free growing-season length is not available for Marco 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 Marco 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. They are descriptive ranges, not an official NOAA classification or a forecast for any specific year.
The year in four calendar signals
- Warmest normal
- August
- At 84°F (29°C) this is a genuinely hot month, in the top third of US stations, and the daily average understates afternoon highs.
- Coldest normal
- January
- The coldest month still averages 64°F (18°C), above freezing, so this calendar has no hard winter.
- Rainfall rhythm
- September to December
- September is typically wettest; December is driest.
- Mild-temperature window
- January through December
- Monthly means sit between 55°F and 75°F in this window. Freezing days are still reported from January through December.
Frequently Asked Questions
What is the average temperature in Marco Island, FL? ▼
The average annual temperature in Marco Island, Florida is 75°F. The warmest month averages 92°F (33°C) and the coldest averages 55°F (13°C).
How much rain does Marco Island get? ▼
Marco Island receives 53.3 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
How many days above 90°F does Marco Island get? ▼
Marco Island averages about 81 days a year at or above 90°F, concentrated in August and the months either side of it. That is a count of days reaching the threshold, not a measure of how far above it they go.
How much energy does heating and cooling require in Marco Island? ▼
Marco Island has 281 heating degree days and 4,057 cooling degree days annually, a cooling-dominated climate. 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 Marco Island climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020). Figures on this page come from Marco Island's primary NOAA station (MARCO IS, USC00085359).
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Marco Island's primary station: MARCO IS (USC00085359). 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 1243083). The reproducible method is an exact normalized name-and-state match; unresolved is an upper bound on facilities because spelling variants can be missed.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.