Marco Island weather in May: Marco Island, Florida: normal highs, lows, rain and records for May
Marco Island in May has a normal high of 88°F and a normal low of 70°F, a daily mean of 79°F, rising from 86°F on the 1st to 89°F by the 31st. Measurable precipitation falls on 9 days in a normal May, 3.38 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 31°C and low of 21°C, 86 mm of precipitation in May.
- NOAA stationMarco Island
- Station IDUSC00085359
- Location25.95°N 81.71°W
- Elevation10 ft (3 m)
- From the center1 miles
- Population16,554
- Jan 74° 55°
- Feb 76° 57°
- Mar 79° 60°
- Apr 83° 65°
- May 88° 70°
- Jun 90° 74°
- Jul 91° 76°
- Aug 92° 76°
- Sep 90° 75°
- Oct 87° 71°
- Nov 81° 63°
- Dec 77° 59°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Marco Island in May?
The normal high is 88°F and the normal low 70°F, for a daily mean of 78.6°F. May is 4.5°F warmer than April and 3.6°F cooler than June. May is the 6th warmest month of the year in Marco Island and the 5th wettest. Across the month the normal high rises 3°F, from 86°F on May 1 to 89°F on May 31. From one year to the next May's mean temperature typically moves about 1.0°F either way (NOAA's standard deviation), so roughly two Mays in three average between 78°F and 80°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 42%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 86°F | 68°F | 21% | 14% |
| May 8 | 87°F | 69°F | 24% | 16% |
| May 15 | 88°F | 70°F | 29% | 20% |
| May 22 | 88°F | 71°F | 34% | 23% |
| May 31 | 89°F | 72°F | 42% | 28% |
Every day of May: normal high, low and chance of precipitation (warmest afternoon May 31, coldest night May 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| May 1 | 86°F | 68°F | 21% | 14% | 13 h 10 min |
| May 2 | 86°F | 68°F | 21% | 14% | 13 h 10 min |
| May 3 | 86°F | 68°F | 21% | 14% | 13 h 10 min |
| May 4 | 86°F | 68°F | 22% | 14% | 13 h 10 min |
| May 5 | 86°F | 68°F | 22% | 15% | 13 h 10 min |
| May 6 | 87°F | 68°F | 23% | 15% | 13 h 10 min |
| May 7 | 87°F | 69°F | 23% | 15% | 13 h 10 min |
| May 8 | 87°F | 69°F | 24% | 16% | 13 h 20 min |
| May 9 | 87°F | 69°F | 24% | 16% | 13 h 20 min |
| May 10 | 87°F | 69°F | 25% | 17% | 13 h 20 min |
| May 11 | 87°F | 69°F | 26% | 17% | 13 h 20 min |
| May 12 | 87°F | 69°F | 27% | 18% | 13 h 20 min |
| May 13 | 87°F | 69°F | 27% | 19% | 13 h 20 min |
| May 14 | 87°F | 69°F | 28% | 19% | 13 h 20 min |
| May 15 | 88°F | 70°F | 29% | 20% | 13 h 20 min |
| May 16 | 88°F | 70°F | 30% | 20% | 13 h 20 min |
| May 17 | 88°F | 70°F | 31% | 21% | 13 h 30 min |
| May 18 | 88°F | 70°F | 32% | 21% | 13 h 30 min |
| May 19 | 88°F | 70°F | 32% | 22% | 13 h 30 min |
| May 20 | 88°F | 70°F | 33% | 22% | 13 h 30 min |
| May 21 | 88°F | 70°F | 34% | 23% | 13 h 30 min |
| May 22 | 88°F | 71°F | 34% | 23% | 13 h 30 min |
| May 23 | 88°F | 71°F | 35% | 24% | 13 h 30 min |
| May 24 | 88°F | 71°F | 36% | 24% | 13 h 30 min |
| May 25 | 88°F | 71°F | 37% | 25% | 13 h 30 min |
| May 26 | 89°F | 71°F | 38% | 25% | 13 h 30 min |
| May 27 | 89°F | 71°F | 38% | 26% | 13 h 30 min |
| May 28 | 89°F | 71°F | 39% | 26% | 13 h 40 min |
| May 29 | 89°F | 72°F | 40% | 27% | 13 h 40 min |
| May 30 | 89°F | 72°F | 41% | 27% | 13 h 40 min |
| May 31 | 89°F | 72°F | 42% | 28% | 13 h 40 min |
- Normal high
- 88°FMay average
- Normal low
- 70°FMay average
- Precipitation
- 3.38 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 5
- Daylight
- 13 h 10 min to 13 h 40 minMay 1 to May 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 30
- Sunshine
- 86%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00085359; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Marco Island in May?
On a given May day the chance of 0.01 inch or more is 30% on average, highest around May 31 (42%). In all, 3.38 in falls on 9 days of a normal May, 1 of them with an inch or more.
In a normal May in Marco Island, 5 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00085359.
What are the records for May in Marco Island?
The warmest May temperature on this station's record (since 2002) is 95°F, on May 17, 2017; the coldest is 58°F, on May 3, 2006. The wettest May brought 9.97 in (2018).
The May mean against the 1991-2020 normal of 78.6°F: 2021 79.1°F (+0.5), 2022 79.7°F (+1.1), 2023 78.7°F (+0.1), 2024 81.5°F (+2.9), 2025 80.8°F (+2.2), 2026 80.6°F (+2.0). 6 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 79.1°F | +0.5°F | 0.00 in |
| 2022 | 79.7°F | +1.1°F | 2.38 in |
| 2023 | 78.7°F | +0.1°F | 0.40 in |
| 2024 | 81.5°F | +2.9°F | 0.70 in |
| 2025 | 80.8°F | +2.2°F | 2.32 in |
| 2026 | 80.6°F | +2.0°F | 4.75 in |
Source: records: ACIS, station USC00085359; recent months: ACIS, station USC00085359. Records and recent months use complete months only.
How does May in Marco Island compare across Florida?
Across the 106 places PlainClimate covers in Florida, May normal highs run from 83°F in Miami Beach to 91°F in Plant City; Marco Island's is 88°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.