Mercer County climate

Mercer County Weather in December

NOAA 1991-2020 normals for Celina 3 Ne, 8.4 km from Mercer County

Average highs run from 43°F on December 1 to 35°F on December 31, and lows from 28°F to 21°F. Normal precipitation for the month is 2.62 in over about 10 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 Mercer County, in °F, with the record for each date.-40-20020406080151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
38°F
Average low
24°F
Precipitation
2.62 in
Snowfall
4.9 in
Record high
70°FDec 2, 1982
Record low
-20°FDec 22, 1989
Chance of a freeze
100%
Daylight
9 h 29 min to 9 h 19 min
Cloud cover
73%
Humidity
85%
Dew point
26°F
Wind
11.6 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 143°F28°F65°F 19709°F 196433%10%
Dec 243°F28°F70°F 19823°F 196633%10%
Dec 342°F28°F67°F 19820°F 197633%11%
Dec 442°F27°F67°F 19824°F 199133%11%
Dec 542°F27°F67°F 20011°F 202533%12%
Dec 641°F27°F69°F 1998-1°F 197733%12%
Dec 741°F26°F67°F 1998-3°F 197733%12%
Dec 841°F26°F64°F 19661°F 200534%13%
Dec 940°F26°F61°F 2023-7°F 195834%13%
Dec 1040°F26°F65°F 1971-14°F 195834%14%
Dec 1140°F25°F61°F 2021-11°F 195834%14%
Dec 1239°F25°F68°F 2015-6°F 196234%14%
Dec 1339°F25°F63°F 2015-8°F 196034%15%
Dec 1439°F25°F65°F 1975-3°F 195834%15%
Dec 1538°F25°F62°F 1975-7°F 195835%15%
Dec 1638°F24°F63°F 1984-7°F 198935%16%
Dec 1738°F24°F61°F 1984-7°F 198935%16%
Dec 1837°F24°F58°F 1967-3°F 198535%16%
Dec 1937°F24°F57°F 1976-8°F 196335%17%
Dec 2037°F23°F60°F 1988-10°F 196335%17%
Dec 2137°F23°F63°F 1967-10°F 196335%17%
Dec 2236°F23°F60°F 1967-20°F 198936%17%
Dec 2336°F23°F61°F 2015-11°F 196036%18%
Dec 2436°F22°F59°F 1964-18°F 198336%18%
Dec 2536°F22°F64°F 1982-18°F 198336%18%
Dec 2636°F22°F63°F 1982-10°F 198336%18%
Dec 2735°F22°F65°F 2008-6°F 201736%19%
Dec 2835°F22°F66°F 1984-4°F 196136%19%
Dec 2935°F21°F65°F 2025-8°F 196137%19%
Dec 3035°F21°F61°F 1965-11°F 198337%19%
Dec 3135°F21°F60°F 1965-12°F 197637%20%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Mercer County, 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 7:43 AM, sunset 5:12 PM
December 31
sunrise 8:02 AM, sunset 5:21 PM

Every day of December: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00331390 (Celina 3 Ne), public domain. Records: NOAA GHCN-Daily, station USC00331390, 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.