Colleton County Weather in May
Average highs run from 80°F on May 1 to 85°F on May 31, and lows from 55°F to 64°F. Normal precipitation for the month is 3.59 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
- 83°F
- Average low
- 60°F
- Precipitation
- 3.59 in
- Record high
- 103°FMay 26, 1911
- Record low
- 31°FMay 2, 1963
- Chance of a freeze
- 0%
- Days of 90°F or more
- 5.2
- Daylight
- 13 h 30 min to 14 h 09 min
- Cloud cover
- 52%
- Humidity
- 71%
- Dew point
- 62°F
- Wind
- 6.5 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 | 80°F | 55°F | 94°F 1910 | 40°F 1988 | 21% |
| May 2 | 80°F | 55°F | 95°F 1990 | 31°F 1963 | 21% |
| May 3 | 81°F | 55°F | 94°F 1910 | 37°F 1940 | 21% |
| May 4 | 81°F | 56°F | 97°F 1913 | 33°F 1971 | 21% |
| May 5 | 81°F | 56°F | 94°F 1913 | 40°F 1978 | 21% |
| May 6 | 81°F | 56°F | 96°F 1952 | 43°F 1957 | 21% |
| May 7 | 81°F | 57°F | 93°F 1952 | 42°F 1957 | 21% |
| May 8 | 82°F | 57°F | 98°F 1916 | 31°F 1989 | 21% |
| May 9 | 82°F | 57°F | 96°F 1962 | 40°F 1960 | 21% |
| May 10 | 82°F | 58°F | 98°F 1911 | 40°F 1980 | 22% |
| May 11 | 82°F | 58°F | 100°F 1911 | 39°F 1966 | 22% |
| May 12 | 82°F | 58°F | 98°F 1905 | 40°F 1969 | 22% |
| May 13 | 82°F | 59°F | 96°F 2000 | 44°F 1989 | 22% |
| May 14 | 83°F | 59°F | 96°F 1956 | 41°F 1941 | 23% |
| May 15 | 83°F | 59°F | 96°F 1962 | 44°F 1917 | 23% |
| May 16 | 83°F | 60°F | 97°F 1941 | 44°F 1951 | 24% |
| May 17 | 83°F | 60°F | 97°F 1941 | 37°F 2006 | 24% |
| May 18 | 83°F | 60°F | 98°F 1944 | 35°F 2006 | 24% |
| May 19 | 83°F | 61°F | 98°F 1944 | 41°F 1976 | 25% |
| May 20 | 84°F | 61°F | 99°F 1944 | 41°F 2002 | 25% |
| May 21 | 84°F | 61°F | 99°F 1938 | 41°F 2002 | 25% |
| May 22 | 84°F | 62°F | 100°F 1938 | 44°F 1954 | 26% |
| May 23 | 84°F | 62°F | 102°F 1941 | 43°F 1954 | 26% |
| May 24 | 84°F | 62°F | 99°F 1953 | 44°F 1954 | 26% |
| May 25 | 84°F | 63°F | 99°F 1912 | 45°F 1967 | 27% |
| May 26 | 84°F | 63°F | 103°F 1911 | 43°F 1951 | 27% |
| May 27 | 85°F | 63°F | 99°F 1962 | 47°F 1988 | 28% |
| May 28 | 85°F | 63°F | 99°F 2019 | 41°F 1961 | 28% |
| May 29 | 85°F | 64°F | 99°F 2019 | 48°F 1961 | 29% |
| May 30 | 85°F | 64°F | 100°F 1941 | 50°F 1971 | 29% |
| May 31 | 85°F | 64°F | 100°F 1945 | 46°F 1984 | 29% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EDT).
- May 1
- sunrise 6:35 AM, sunset 8:05 PM
- May 31
- sunrise 6:16 AM, sunset 8:25 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00388922 (Walterboro 1 Sw), public domain. Records: NOAA GHCN-Daily, station USC00388922, 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.