Gaffney climate

Gaffney Weather in May

NOAA 1991-2020 normals for Ninety Nine Is, 15 km from Gaffney

Average highs run from 75°F on May 1 to 81°F on May 31, and lows from 48°F to 58°F. Normal precipitation for the month is 3.63 in over about 9 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 Gaffney, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
78°F
Average low
53°F
Precipitation
3.63 in
Record high
100°FMay 8, 1940
Record low
29°FMay 2, 1963
Chance of a freeze
20%
Days of 90°F or more
0.8
Daylight
13 h 36 min to 14 h 21 min
Cloud cover
59%
Humidity
74%
Dew point
59°F
Wind
5.6 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 175°F48°F92°F 194233°F 199628%0%
May 275°F48°F90°F 194229°F 196328%0%
May 376°F48°F94°F 193833°F 200428%0%
May 476°F49°F94°F 193833°F 197128%0%
May 576°F49°F92°F 194935°F 194028%0%
May 676°F49°F93°F 194036°F 197428%0%
May 776°F50°F97°F 194034°F 202028%0%
May 876°F50°F100°F 194029°F 198928%0%
May 977°F50°F93°F 194034°F 202028%0%
May 1077°F51°F92°F 195232°F 202028%0%
May 1177°F51°F90°F 195532°F 196628%0%
May 1277°F52°F92°F 195535°F 202028%0%
May 1377°F52°F92°F 201835°F 196028%0%
May 1478°F52°F93°F 195636°F 196028%0%
May 1578°F53°F95°F 195637°F 202629%0%
May 1678°F53°F94°F 194437°F 202629%0%
May 1778°F53°F95°F 194736°F 199729%0%
May 1878°F54°F94°F 194436°F 197329%0%
May 1978°F54°F94°F 193837°F 200229%0%
May 2079°F54°F96°F 193841°F 197629%0%
May 2179°F55°F96°F 193838°F 200229%0%
May 2279°F55°F95°F 194836°F 200229%0%
May 2379°F55°F94°F 194440°F 189530%0%
May 2479°F56°F96°F 193940°F 196330%0%
May 2580°F56°F94°F 195340°F 201330%0%
May 2680°F56°F99°F 195343°F 201330%0%
May 2780°F57°F97°F 193739°F 197930%0%
May 2880°F57°F93°F 193741°F 196130%0%
May 2980°F57°F99°F 194147°F 196130%0%
May 3081°F57°F95°F 196948°F 199031%0%
May 3181°F58°F97°F 195338°F 198431%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Gaffney, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

May 1
sunrise 6:36 AM, sunset 8:12 PM
May 31
sunrise 6:14 AM, sunset 8:35 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00386293 (Ninety Nine Is), public domain. Records: NOAA GHCN-Daily, station USC00317845, 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.