Cass County climate

Cass County Weather in December

NOAA 1991-2020 normals for Deep Portage, 7.3 km from Cass County

Average highs run from 29°F on December 1 to 21°F on December 31, and lows from 16°F to 5°F.

December day by day

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

Normal daily high and low temperature at Cass County, in °F, with the record for each date.-75-50-250255075151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
25°F
Average low
11°F
Snowfall
11.1 in
Record high
58°FDec 1, 1962
Record low
-51°FDec 31, 1898
Chance of a freeze
100%
Daylight
8 h 48 min to 8 h 35 min
Cloud cover
66%
Humidity
91%
Dew point
11°F
Wind
11.2 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 129°F16°F58°F 1962-44°F 189618%
Dec 229°F16°F55°F 1962-41°F 189618%
Dec 329°F15°F56°F 1962-32°F 192719%
Dec 428°F15°F52°F 1941-22°F 199119%
Dec 528°F15°F48°F 1988-24°F 193619%
Dec 628°F14°F57°F 1939-24°F 192619%
Dec 727°F14°F52°F 1939-34°F 193619%
Dec 827°F14°F47°F 2023-27°F 191019%
Dec 927°F13°F52°F 1939-29°F 192719%
Dec 1026°F13°F49°F 1912-29°F 197719%
Dec 1126°F12°F53°F 1913-35°F 193619%
Dec 1226°F12°F49°F 1913-30°F 190319%
Dec 1326°F12°F44°F 1998-34°F 194019%
Dec 1425°F11°F42°F 1960-33°F 190119%
Dec 1525°F11°F49°F 1998-29°F 191919%
Dec 1625°F11°F48°F 1939-28°F 189719%
Dec 1724°F10°F49°F 1939-28°F 189719%
Dec 1824°F10°F44°F 1900-32°F 198319%
Dec 1924°F9°F45°F 1923-39°F 195519%
Dec 2024°F9°F45°F 1923-35°F 198319%
Dec 2123°F9°F44°F 1899-34°F 198919%
Dec 2223°F8°F42°F 1907-26°F 189719%
Dec 2323°F8°F45°F 1936-30°F 198319%
Dec 2423°F8°F44°F 1994-33°F 192119%
Dec 2522°F7°F46°F 2023-44°F 193319%
Dec 2622°F7°F44°F 1994-38°F 193419%
Dec 2722°F6°F43°F 1994-40°F 193319%
Dec 2822°F6°F44°F 1994-36°F 193319%
Dec 2921°F6°F39°F 1929-41°F 191719%
Dec 3021°F5°F46°F 1904-41°F 189819%
Dec 3121°F5°F48°F 1904-51°F 189819%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Cass County, 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 (CST).

December 1
sunrise 7:42 AM, sunset 4:30 PM
December 31
sunrise 8:03 AM, sunset 4:38 PM

Every day of December: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00212050 (Deep Portage), public domain. Records: NOAA GHCN-Daily, station USC00214652, 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.