Confluence climate

Confluence Weather in December

NOAA 1991-2020 normals for Confluence 1 Sw Dam, 1.7 km from Confluence

Average highs run from 46°F on December 1 to 38°F on December 31, and lows from 27°F to 21°F. Normal precipitation for the month is 3.52 in over about 16 wet days.

December day by day

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

Normal daily high and low temperature at Confluence, in °F, with the record for each date.-50-250255075151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
41°F
Average low
24°F
Precipitation
3.52 in
Snowfall
10.9 in
Record high
74°FDec 7, 1951
Record low
-32°FDec 30, 1917
Chance of a freeze
100%
Daylight
9 h 33 min to 9 h 24 min
Cloud cover
77%
Humidity
87%
Dew point
26°F
Wind
6.5 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 146°F27°F68°F 2006-6°F 192948%14%
Dec 245°F27°F69°F 19821°F 193048%15%
Dec 345°F27°F72°F 1982-11°F 197649%15%
Dec 444°F27°F67°F 1941-13°F 194049%16%
Dec 544°F27°F72°F 19821°F 197449%16%
Dec 644°F26°F73°F 2013-1°F 197450%17%
Dec 744°F26°F74°F 1951-2°F 197750%17%
Dec 843°F26°F69°F 1966-8°F 197750%18%
Dec 943°F26°F72°F 1966-8°F 196050%18%
Dec 1043°F26°F67°F 1971-10°F 191051%19%
Dec 1142°F26°F64°F 1971-21°F 196851%19%
Dec 1242°F25°F66°F 2020-14°F 196251%20%
Dec 1342°F25°F67°F 1923-5°F 193751%20%
Dec 1441°F25°F67°F 2015-6°F 190451%21%
Dec 1541°F25°F70°F 1971-14°F 194352%21%
Dec 1641°F25°F66°F 1984-15°F 194352%21%
Dec 1741°F24°F71°F 2021-15°F 191052%22%
Dec 1840°F24°F67°F 2016-17°F 191952%22%
Dec 1940°F24°F64°F 2021-9°F 198953%23%
Dec 2040°F24°F60°F 1903-16°F 196053%23%
Dec 2140°F24°F66°F 1949-25°F 194253%24%
Dec 2240°F23°F71°F 2013-22°F 193553%24%
Dec 2339°F23°F63°F 1933-23°F 196053%24%
Dec 2439°F23°F65°F 2015-22°F 198953%25%
Dec 2539°F23°F67°F 1982-13°F 193554%25%
Dec 2639°F22°F62°F 1982-20°F 191454%26%
Dec 2739°F22°F68°F 2008-17°F 195054%26%
Dec 2838°F22°F68°F 2015-13°F 195054%26%
Dec 2938°F22°F68°F 2025-11°F 201754%27%
Dec 3038°F22°F67°F 1984-32°F 191754%27%
Dec 3138°F21°F71°F 2022-10°F 196355%28%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Confluence, in percent, and of at least 0.1 inch of snowfall.02040601102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EST).

December 1
sunrise 7:20 AM, sunset 4:53 PM
December 31
sunrise 7:39 AM, sunset 5:03 PM

Every day of December: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00361705 (Confluence 1 Sw Dam), public domain. Records: NOAA GHCN-Daily, station USC00186620, 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.