Sidney climate

Sidney Weather in December

NOAA 1991-2020 normals for Sidney Muni AP, 4.7 km from Sidney

Average highs run from 45°F on December 1 to 41°F on December 31, and lows from 16°F to 13°F. Normal precipitation for the month is 0.20 in over about 3 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 Sidney, in °F, with the record for each date.-250255075100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
42°F
Average low
14°F
Precipitation
0.20 in
Snowfall
5.7 in
Record high
78°FDec 2, 2021
Record low
-23°FDec 21, 1983
Chance of a freeze
100%
Daylight
9 h 26 min to 9 h 16 min
Cloud cover
60%
Humidity
62%
Dew point
18°F
Wind
11.4 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 145°F16°F74°F 2021-16°F 198511%6%
Dec 245°F16°F78°F 2021-6°F 198511%6%
Dec 344°F16°F69°F 1959-6°F 197811%6%
Dec 444°F15°F66°F 1975-5°F 200911%6%
Dec 544°F15°F71°F 1980-14°F 197211%6%
Dec 643°F15°F71°F 2023-22°F 197211%6%
Dec 743°F15°F70°F 1981-16°F 200511%6%
Dec 843°F14°F67°F 2020-17°F 197211%6%
Dec 942°F14°F71°F 2015-16°F 197211%6%
Dec 1042°F14°F66°F 1968-16°F 197211%6%
Dec 1142°F14°F69°F 2025-18°F 198511%6%
Dec 1242°F14°F66°F 2017-10°F 196111%6%
Dec 1341°F13°F63°F 1980-10°F 198511%6%
Dec 1441°F13°F65°F 1969-10°F 200811%6%
Dec 1541°F13°F65°F 2002-16°F 200811%6%
Dec 1641°F13°F68°F 1962-12°F 196411%6%
Dec 1741°F13°F65°F 1962-18°F 196411%6%
Dec 1841°F13°F72°F 1980-21°F 198311%6%
Dec 1941°F13°F69°F 2025-8°F 195111%6%
Dec 2041°F13°F66°F 2003-21°F 198311%6%
Dec 2140°F13°F68°F 1981-23°F 198311%6%
Dec 2240°F13°F77°F 2025-21°F 199811%6%
Dec 2340°F12°F68°F 1964-17°F 198311%6%
Dec 2440°F12°F72°F 2025-23°F 201711%6%
Dec 2540°F12°F68°F 2025-10°F 194811%6%
Dec 2640°F12°F67°F 2005-14°F 194811%6%
Dec 2740°F12°F66°F 1980-9°F 201711%6%
Dec 2840°F12°F72°F 1980-8°F 201411%6%
Dec 2941°F12°F65°F 2011-7°F 196811%6%
Dec 3041°F13°F62°F 2011-22°F 196811%6%
Dec 3141°F13°F65°F 1980-21°F 201410%6%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Sidney, in percent, and of at least 0.1 inch of snowfall.02.557.51012.51102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MST).

December 1
sunrise 6:58 AM, sunset 4:24 PM
December 31
sunrise 7:17 AM, sunset 4:33 PM

Every day of December: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00024030 (Sidney Muni AP), public domain. Records: NOAA GHCN-Daily, station USW00024030, 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.