Arco climate

Arco Weather in December

NOAA 1991-2020 normals for Arco, 0.2 km from Arco

Average highs run from 35°F on December 1 to 29°F on December 31, and lows from 13°F to 7°F. Normal precipitation for the month is 0.86 in over about 5 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 Arco, in °F, with the record for each date.-200204060151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
31°F
Average low
9°F
Precipitation
0.86 in
Snowfall
8.1 in
Record high
58°FDec 2, 2021
Record low
-7°FDec 22, 2022
Chance of a freeze
100%
Daylight
9 h 11 min to 8 h 59 min
Cloud cover
63%
Humidity
83%
Dew point
14°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 135°F13°F51°F 20212°F 201513%7%
Dec 235°F13°F58°F 20213°F 202214%7%
Dec 334°F13°F53°F 20214°F 202214%7%
Dec 434°F12°F56°F 20218°F 201814%7%
Dec 534°F12°F53°F 20237°F 201814%7%
Dec 633°F12°F52°F 20234°F 201814%7%
Dec 733°F11°F49°F 20142°F 201614%7%
Dec 833°F11°F48°F 20143°F 201615%8%
Dec 932°F11°F52°F 202512°F 201715%8%
Dec 1032°F10°F54°F 202510°F 202415%8%
Dec 1132°F10°F57°F 202513°F 201615%8%
Dec 1232°F10°F58°F 202510°F 201615%8%
Dec 1331°F10°F53°F 20258°F 201616%8%
Dec 1431°F9°F55°F 202511°F 202216%8%
Dec 1531°F9°F52°F 20255°F 202016%8%
Dec 1631°F9°F54°F 2025-1°F 202216%8%
Dec 1730°F9°F52°F 20252°F 202216%8%
Dec 1830°F8°F44°F 2024-3°F 201616%8%
Dec 1930°F8°F50°F 2023-3°F 201616%8%
Dec 2030°F8°F51°F 20238°F 202216%8%
Dec 2130°F8°F51°F 20203°F 202216%8%
Dec 2230°F8°F46°F 2023-7°F 202216%8%
Dec 2330°F8°F46°F 20251°F 202216%8%
Dec 2430°F7°F46°F 20255°F 201716%8%
Dec 2530°F7°F47°F 20250°F 201516%8%
Dec 2629°F7°F42°F 20253°F 201516%8%
Dec 2729°F7°F46°F 20170°F 201516%8%
Dec 2829°F7°F44°F 20174°F 202116%8%
Dec 2929°F7°F53°F 20173°F 202016%8%
Dec 3029°F7°F48°F 2017-3°F 201416%8%
Dec 3129°F7°F48°F 2025-5°F 201416%8%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Arco, in percent, and of at least 0.1 inch of snowfall.051015201102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MST).

December 1
sunrise 7:47 AM, sunset 4:58 PM
December 31
sunrise 8:07 AM, sunset 5:06 PM

Every day of December: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00100375 (Arco), public domain. Records: NOAA GHCN-Daily, station USC00100774, 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.