Stock Island Weather in May
Average highs run from 84°F on May 1 to 87°F on May 31, and lows from 75°F to 78°F. Normal precipitation for the month is 3.44 in over about 7 wet days.
May day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
May at a glance
- Average high
- 86°F
- Average low
- 77°F
- Precipitation
- 3.44 in
- Record high
- 94°FMay 14, 2019
- Record low
- 63°FMay 8, 2016
- Chance of a freeze
- 0%
- Days of 90°F or more
- 2.3
- Daylight
- 13 h 05 min to 13 h 33 min
- Cloud cover
- 42%
- Humidity
- 76%
- Dew point
- 72°F
- Wind
- 11.6 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| May 1 | 84°F | 75°F | 88°F 1964 | 64°F 1992 | 17% |
| May 2 | 84°F | 76°F | 88°F 1964 | 65°F 1992 | 18% |
| May 3 | 84°F | 76°F | 88°F 1964 | 65°F 1999 | 18% |
| May 4 | 85°F | 76°F | 89°F 1994 | 69°F 1988 | 18% |
| May 5 | 85°F | 76°F | 90°F 2026 | 64°F 1992 | 18% |
| May 6 | 85°F | 76°F | 89°F 1978 | 67°F 1992 | 19% |
| May 7 | 85°F | 76°F | 89°F 2026 | 67°F 2008 | 19% |
| May 8 | 85°F | 76°F | 92°F 2026 | 63°F 2016 | 19% |
| May 9 | 85°F | 76°F | 89°F 1995 | 64°F 1992 | 20% |
| May 10 | 85°F | 76°F | 90°F 2024 | 66°F 1960 | 20% |
| May 11 | 85°F | 76°F | 89°F 1994 | 68°F 1960 | 21% |
| May 12 | 85°F | 77°F | 90°F 2024 | 69°F 1958 | 21% |
| May 13 | 85°F | 77°F | 90°F 1995 | 69°F 1988 | 22% |
| May 14 | 85°F | 77°F | 94°F 2019 | 67°F 2006 | 22% |
| May 15 | 85°F | 77°F | 92°F 2024 | 69°F 1960 | 23% |
| May 16 | 86°F | 77°F | 92°F 2024 | 66°F 1951 | 23% |
| May 17 | 86°F | 77°F | 91°F 2024 | 67°F 1951 | 24% |
| May 18 | 86°F | 77°F | 93°F 2024 | 67°F 1951 | 25% |
| May 19 | 86°F | 77°F | 92°F 2024 | 66°F 2006 | 25% |
| May 20 | 86°F | 77°F | 90°F 1953 | 67°F 2006 | 26% |
| May 21 | 86°F | 77°F | 91°F 2023 | 71°F 1988 | 26% |
| May 22 | 86°F | 78°F | 92°F 2023 | 69°F 2009 | 27% |
| May 23 | 86°F | 78°F | 92°F 2025 | 70°F 1994 | 27% |
| May 24 | 86°F | 78°F | 91°F 1949 | 70°F 1992 | 28% |
| May 25 | 86°F | 78°F | 91°F 1989 | 70°F 1992 | 28% |
| May 26 | 86°F | 78°F | 91°F 1989 | 68°F 1992 | 29% |
| May 27 | 87°F | 78°F | 91°F 1953 | 71°F 1959 | 29% |
| May 28 | 87°F | 78°F | 91°F 1952 | 70°F 1983 | 30% |
| May 29 | 87°F | 78°F | 92°F 2024 | 71°F 1963 | 30% |
| May 30 | 87°F | 78°F | 91°F 1949 | 71°F 1960 | 30% |
| May 31 | 87°F | 78°F | 91°F 1951 | 72°F 1960 | 31% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EDT).
- May 1
- sunrise 6:52 AM, sunset 7:57 PM
- May 31
- sunrise 6:38 AM, sunset 8:11 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00012850 (Key West Nas), public domain. Records: NOAA GHCN-Daily, station USW00012836, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.