Santee climate

Santee Weather in December

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

Average highs run from 63°F on December 1 to 59°F on December 31, and lows from 39°F to 35°F. Normal precipitation for the month is 3.55 in.

December 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.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
60°F
Average low
37°F
Precipitation
3.55 in
Record high
83°FDec 5, 1978
Record low
7°FDec 26, 1983
Chance of a freeze
99%
Daylight
10 h 06 min to 9 h 58 min
Cloud cover
55%
Humidity
81%
Dew point
41°F
Wind
7.4 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
Dec 163°F39°F79°F 199120°F 19760%
Dec 263°F39°F80°F 198221°F 19760%
Dec 363°F38°F82°F 199122°F 19790%
Dec 462°F38°F82°F 199118°F 19790%
Dec 562°F38°F83°F 197819°F 20000%
Dec 662°F38°F81°F 199821°F 19740%
Dec 762°F38°F81°F 199818°F 19840%
Dec 862°F38°F82°F 197813°F 20100%
Dec 961°F38°F83°F 197817°F 20060%
Dec 1061°F38°F81°F 197817°F 20060%
Dec 1161°F37°F79°F 200717°F 19770%
Dec 1261°F37°F80°F 200717°F 19770%
Dec 1361°F37°F79°F 200720°F 19810%
Dec 1461°F37°F80°F 200717°F 19880%
Dec 1560°F37°F78°F 198414°F 20100%
Dec 1660°F37°F76°F 197519°F 20040%
Dec 1760°F37°F80°F 198421°F 19850%
Dec 1860°F37°F79°F 198417°F 19880%
Dec 1960°F37°F80°F 198417°F 19750%
Dec 2060°F36°F79°F 198414°F 19810%
Dec 2160°F36°F80°F 198412°F 19810%
Dec 2259°F36°F78°F 201313°F 19810%
Dec 2359°F36°F81°F 201315°F 19890%
Dec 2459°F36°F80°F 199014°F 20220%
Dec 2559°F36°F80°F 200410°F 19830%
Dec 2659°F36°F78°F 19827°F 19830%
Dec 2759°F36°F78°F 19827°F 19830%
Dec 2859°F36°F77°F 198218°F 19770%
Dec 2959°F36°F80°F 201516°F 19770%
Dec 3059°F35°F80°F 198416°F 19770%
Dec 3159°F35°F81°F 198418°F 19830%

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 (EST).

December 1
sunrise 7:08 AM, sunset 5:14 PM
December 31
sunrise 7:26 AM, sunset 5:24 PM

Every day of December: 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.