Byron climate

Byron Weather in December

NOAA 1991-2020 normals for Linden Wwtp, 11.5 km from Byron

Average highs run from 40°F on December 1 to 31°F on December 31, and lows from 26°F to 18°F. Normal precipitation for the month is 2.10 in.

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.-20020406080151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
34°F
Average low
21°F
Precipitation
2.10 in
Snowfall
11.4 in
Record high
62°FDec 4, 2012
Record low
-14°FDec 14, 1904
Chance of a freeze
100%
Daylight
9 h 16 min to 9 h 05 min
Cloud cover
75%
Humidity
87%
Dew point
23°F
Wind
11.9 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 140°F26°F58°F 20101°F 189724%
Dec 239°F25°F57°F 20126°F 189325%
Dec 339°F25°F58°F 1920-11°F 189526%
Dec 438°F25°F62°F 2012-7°F 189326%
Dec 538°F24°F59°F 2013-3°F 189527%
Dec 638°F24°F56°F 19126°F 200728%
Dec 737°F24°F50°F 19247°F 189328%
Dec 837°F23°F57°F 2004-2°F 200529%
Dec 936°F23°F53°F 1923-5°F 191729%
Dec 1036°F23°F57°F 19110°F 191730%
Dec 1136°F23°F58°F 1899-3°F 191730%
Dec 1235°F22°F58°F 1896-2°F 191731%
Dec 1335°F22°F56°F 1920-13°F 189531%
Dec 1435°F22°F57°F 1920-14°F 190431%
Dec 1534°F21°F57°F 1891-7°F 191732%
Dec 1634°F21°F56°F 2011-3°F 191632%
Dec 1734°F21°F54°F 2006-3°F 190433%
Dec 1833°F21°F52°F 2006-8°F 189733%
Dec 1933°F20°F53°F 1895-7°F 189734%
Dec 2033°F20°F56°F 1894-7°F 200434%
Dec 2133°F20°F55°F 1894-2°F 189735%
Dec 2232°F20°F55°F 1891-12°F 189735%
Dec 2332°F19°F56°F 1893-14°F 189635%
Dec 2432°F19°F59°F 1893-14°F 189636%
Dec 2532°F19°F58°F 1895-8°F 191436%
Dec 2631°F19°F42°F 1922-7°F 191437%
Dec 2731°F18°F52°F 2008-6°F 192537%
Dec 2831°F18°F60°F 2008-10°F 192437%
Dec 2931°F18°F51°F 2013-13°F 190937%
Dec 3031°F18°F48°F 1906-7°F 189938%
Dec 3131°F18°F51°F 20040°F 189938%

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.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EST).

December 1
sunrise 7:47 AM, sunset 5:03 PM
December 31
sunrise 8:06 AM, sunset 5:11 PM

Every day of December: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00204793 (Linden Wwtp), public domain. Records: NOAA GHCN-Daily, station USC00203947, 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.