Santee climate

Santee Weather in May

NOAA 1991-2020 normals for Holly Hill 1 Sw, 18.6 km from Santee

Average highs run from 80°F on May 1 to 86°F on May 31, and lows from 54°F to 64°F. Normal precipitation for the month is 3.57 in.

May day by day

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

Normal daily high and low temperature at Santee, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
83°F
Average low
59°F
Precipitation
3.57 in
Record high
105°FMay 28, 2006
Record low
34°FMay 4, 1986
Chance of a freeze
0%
Days of 90°F or more
7.2
Daylight
13 h 31 min to 14 h 13 min
Cloud cover
52%
Humidity
71%
Dew point
61°F
Wind
7.2 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 180°F54°F94°F 198741°F 19920%
May 280°F54°F95°F 198643°F 19880%
May 381°F55°F93°F 200236°F 19810%
May 481°F55°F92°F 200734°F 19860%
May 581°F55°F91°F 199635°F 19860%
May 681°F56°F93°F 197742°F 19720%
May 781°F56°F95°F 197744°F 20200%
May 882°F56°F95°F 197735°F 19890%
May 982°F57°F97°F 198635°F 19890%
May 1082°F57°F95°F 200438°F 19770%
May 1182°F57°F95°F 200235°F 19770%
May 1282°F58°F92°F 199539°F 20200%
May 1383°F58°F98°F 200044°F 19890%
May 1483°F58°F98°F 200043°F 20130%
May 1583°F59°F96°F 198244°F 20210%
May 1683°F59°F98°F 199540°F 20080%
May 1783°F59°F92°F 197739°F 19840%
May 1884°F60°F93°F 197742°F 19840%
May 1984°F60°F97°F 197739°F 19760%
May 2084°F60°F99°F 199642°F 20020%
May 2184°F61°F98°F 199640°F 20020%
May 2284°F61°F98°F 200043°F 19810%
May 2385°F61°F95°F 200445°F 19930%
May 2485°F62°F95°F 198748°F 20020%
May 2585°F62°F97°F 200045°F 20130%
May 2685°F62°F101°F 200034°F 19880%
May 2785°F63°F98°F 199544°F 19790%
May 2885°F63°F105°F 200648°F 19790%
May 2986°F63°F97°F 201955°F 19800%
May 3086°F64°F98°F 201951°F 19970%
May 3186°F64°F96°F 200747°F 19840%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Santee, in percent, and of at least 0.1 inch of snowfall.00.21102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

May 1
sunrise 6:34 AM, sunset 8:05 PM
May 31
sunrise 6:13 AM, sunset 8:26 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00384205 (Holly Hill 1 Sw), public domain. Records: NOAA GHCN-Daily, station USC00385493, 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.