Byron climate

Byron Weather in December

NOAA 1991-2020 normals for Lovell, 9.3 km from Byron

Average highs run from 37°F on December 1 to 31°F on December 31, and lows from 14°F to 7°F. Normal precipitation for the month is 0.20 in over about 2 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 Byron, in °F, with the record for each date.-50-250255075151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
33°F
Average low
10°F
Precipitation
0.20 in
Snowfall
2.6 in
Record high
66°FDec 2, 1995
Record low
-43°FDec 13, 1919
Chance of a freeze
100%
Daylight
9 h 03 min to 8 h 51 min
Cloud cover
70%
Humidity
70%
Dew point
16°F
Wind
8.5 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 137°F14°F65°F 1999-22°F 19197%3%
Dec 237°F14°F66°F 1995-22°F 19857%3%
Dec 336°F13°F62°F 1923-20°F 18977%3%
Dec 436°F13°F65°F 1941-13°F 19787%3%
Dec 535°F13°F65°F 1965-32°F 19727%3%
Dec 635°F12°F57°F 1939-32°F 19727%3%
Dec 735°F12°F63°F 1981-32°F 19727%3%
Dec 834°F12°F54°F 1939-30°F 19727%3%
Dec 934°F11°F60°F 1940-31°F 19197%3%
Dec 1034°F11°F60°F 1957-30°F 19727%3%
Dec 1133°F11°F63°F 1981-30°F 19727%3%
Dec 1233°F10°F62°F 2004-26°F 19197%3%
Dec 1333°F10°F55°F 1924-43°F 19197%3%
Dec 1432°F10°F56°F 1929-22°F 19727%3%
Dec 1532°F10°F58°F 2006-23°F 19227%3%
Dec 1632°F9°F55°F 1929-20°F 18977%3%
Dec 1732°F9°F57°F 1939-33°F 20167%3%
Dec 1832°F9°F60°F 1939-30°F 20167%3%
Dec 1931°F9°F55°F 1941-33°F 19247%3%
Dec 2031°F8°F56°F 1933-31°F 19247%4%
Dec 2131°F8°F57°F 1957-36°F 19907%4%
Dec 2231°F8°F60°F 1933-38°F 19907%4%
Dec 2331°F8°F64°F 1933-40°F 19907%4%
Dec 2431°F8°F57°F 1933-25°F 19847%4%
Dec 2531°F8°F52°F 1936-23°F 19847%4%
Dec 2631°F8°F51°F 1994-25°F 19967%4%
Dec 2731°F7°F54°F 1980-36°F 19167%4%
Dec 2831°F7°F65°F 1980-34°F 19167%4%
Dec 2931°F7°F56°F 1998-30°F 19167%4%
Dec 3031°F7°F54°F 1937-38°F 19787%4%
Dec 3131°F7°F51°F 1949-38°F 19787%4%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Byron, in percent, and of at least 0.1 inch of snowfall.024681102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MST).

December 1
sunrise 7:32 AM, sunset 4:35 PM
December 31
sunrise 7:52 AM, sunset 4:43 PM

Every day of December: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00485770 (Lovell), public domain. Records: NOAA GHCN-Daily, station USC00485770, 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.