Copperopolis climate

Copperopolis Weather in January

NOAA 1991-2020 normals for New Melones Dam Hq, 13.9 km from Copperopolis

Average highs run from 57°F on January 1 to 58°F on January 31, and lows from 38°F to 39°F. Normal precipitation for the month is 5.85 in over about 13 wet days.

January day by day

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

Normal daily high and low temperature at Copperopolis, in °F, with the record for each date.20406080151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

January at a glance

Average high
57°F
Average low
38°F
Precipitation
5.85 in
Record high
75°FJan 19, 2021
Record low
24°FJan 4, 1993
Chance of a freeze
77%
Daylight
9 h 35 min to 10 h 17 min
Cloud cover
60%
Humidity
72%
Dew point
36°F
Wind
5.8 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
Jan 157°F38°F69°F 201428°F 201540%0%
Jan 257°F38°F69°F 201828°F 199340%0%
Jan 357°F38°F69°F 201427°F 199340%0%
Jan 457°F38°F69°F 201424°F 199340%0%
Jan 557°F38°F72°F 201224°F 199340%0%
Jan 657°F38°F71°F 200628°F 199341%0%
Jan 757°F38°F73°F 201530°F 202441%0%
Jan 857°F38°F72°F 201530°F 202441%0%
Jan 957°F38°F73°F 200431°F 199941%0%
Jan 1057°F38°F68°F 200429°F 202041%0%
Jan 1157°F38°F67°F 201229°F 199341%0%
Jan 1257°F38°F68°F 201029°F 199341%0%
Jan 1357°F38°F66°F 200424°F 200741%0%
Jan 1457°F38°F70°F 200926°F 200741%0%
Jan 1557°F38°F69°F 201227°F 199741%0%
Jan 1657°F38°F73°F 201429°F 200742%0%
Jan 1757°F38°F72°F 201428°F 200142%0%
Jan 1857°F38°F73°F 202128°F 200742%0%
Jan 1957°F38°F75°F 202132°F 200742%0%
Jan 2057°F38°F75°F 201431°F 200242%0%
Jan 2158°F38°F72°F 199431°F 200442%0%
Jan 2258°F38°F75°F 201432°F 200242%0%
Jan 2358°F38°F72°F 201330°F 201442%0%
Jan 2458°F38°F70°F 202531°F 200242%0%
Jan 2558°F38°F75°F 201429°F 199342%0%
Jan 2658°F38°F74°F 201430°F 199342%0%
Jan 2758°F38°F71°F 201429°F 200142%0%
Jan 2858°F38°F70°F 201931°F 199342%0%
Jan 2958°F38°F70°F 202429°F 200241%0%
Jan 3058°F38°F75°F 202426°F 200241%0%
Jan 3158°F39°F75°F 202428°F 200241%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Copperopolis, in percent, and of at least 0.1 inch of snowfall.010203040501102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PST).

January 1
sunrise 7:19 AM, sunset 4:54 PM
January 31
sunrise 7:08 AM, sunset 5:25 PM

Every day of January: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00046174 (New Melones Dam Hq), public domain. Records: NOAA GHCN-Daily, station USC00046174, 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.