Williamston climate

Williamston Weather in May

NOAA 1991-2020 normals for W Pelzer, 3.4 km from Williamston

Average highs run from 77°F on May 1 to 83°F on May 31, and lows from 52°F to 62°F. Normal precipitation for the month is 3.69 in over about 7 wet days.

May day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Williamston, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
80°F
Average low
57°F
Precipitation
3.69 in
Record high
97°FMay 25, 2019
Record low
38°FMay 1, 1996
Chance of a freeze
0%
Days of 90°F or more
2.3
Daylight
13 h 35 min to 14 h 19 min
Cloud cover
54%
Humidity
76%
Dew point
60°F
Wind
4.7 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
May 177°F52°F85°F 200738°F 199625%0%
May 277°F52°F88°F 200741°F 199625%0%
May 378°F52°F87°F 200741°F 199925%0%
May 478°F53°F90°F 202241°F 200424%0%
May 578°F53°F86°F 202238°F 201124%0%
May 678°F53°F85°F 199638°F 201124%0%
May 778°F54°F84°F 201042°F 200724%0%
May 879°F54°F87°F 200442°F 200724%0%
May 979°F55°F85°F 200242°F 202024%0%
May 1079°F55°F87°F 201842°F 199724%0%
May 1179°F55°F91°F 201842°F 199725%0%
May 1279°F56°F92°F 201844°F 199725%0%
May 1380°F56°F92°F 201844°F 200625%0%
May 1480°F56°F91°F 201842°F 199725%0%
May 1580°F57°F87°F 200042°F 199725%0%
May 1680°F57°F90°F 202243°F 199725%0%
May 1780°F57°F90°F 201940°F 199725%0%
May 1881°F58°F91°F 201946°F 200625%0%
May 1981°F58°F95°F 202244°F 200725%0%
May 2081°F58°F94°F 202244°F 200725%0%
May 2181°F59°F91°F 202247°F 199425%0%
May 2281°F59°F90°F 199645°F 200225%0%
May 2382°F59°F92°F 202142°F 200225%0%
May 2482°F60°F96°F 201942°F 200225%0%
May 2582°F60°F97°F 201947°F 200225%0%
May 2682°F60°F97°F 201948°F 200525%0%
May 2782°F60°F95°F 201951°F 200125%0%
May 2883°F61°F97°F 201951°F 199426%0%
May 2983°F61°F97°F 201952°F 199426%0%
May 3083°F61°F96°F 201952°F 200526%0%
May 3183°F62°F93°F 201950°F 199626%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Williamston, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

May 1
sunrise 6:40 AM, sunset 8:15 PM
May 31
sunrise 6:18 AM, sunset 8:37 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00389122 (W Pelzer), public domain. Records: NOAA GHCN-Daily, station USC00383735, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.