Blue Grass climate

Blue Grass Weather in December

NOAA 1991-2020 normals for Rock Island L&d 15, 16.8 km from Blue Grass

Average highs run from 42°F on December 1 to 32°F on December 31, and lows from 24°F to 16°F. Normal precipitation for the month is 2.02 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 Blue Grass, in °F, with the record for each date.-20020406080151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
36°F
Average low
20°F
Precipitation
2.02 in
Snowfall
8.8 in
Record high
73°FDec 15, 2021
Record low
-18°FDec 25, 2000
Chance of a freeze
100%
Daylight
9 h 24 min to 9 h 14 min
Cloud cover
67%
Humidity
85%
Dew point
22°F
Wind
10.7 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 142°F24°F60°F 20126°F 200534%13%
Dec 241°F24°F61°F 19981°F 200534%13%
Dec 341°F24°F69°F 20125°F 200634%13%
Dec 440°F23°F70°F 1998-5°F 202534%14%
Dec 540°F23°F68°F 2001-7°F 200534%14%
Dec 639°F23°F54°F 1998-10°F 200534%15%
Dec 739°F22°F56°F 2023-12°F 200534%15%
Dec 839°F22°F58°F 2023-8°F 202534%15%
Dec 938°F22°F56°F 2020-7°F 201334%16%
Dec 1038°F21°F60°F 2020-4°F 200934%16%
Dec 1137°F21°F51°F 2015-9°F 201334%16%
Dec 1237°F21°F59°F 2015-11°F 200033%17%
Dec 1337°F21°F63°F 2015-10°F 200033%17%
Dec 1436°F20°F61°F 2015-8°F 202533%17%
Dec 1536°F20°F73°F 2021-5°F 201633%17%
Dec 1636°F20°F59°F 20211°F 200833%18%
Dec 1735°F19°F46°F 2006-4°F 200033%18%
Dec 1835°F19°F56°F 2002-13°F 201633%18%
Dec 1935°F19°F51°F 2018-9°F 201633%19%
Dec 2034°F19°F52°F 2015-3°F 199633%19%
Dec 2134°F18°F50°F 2015-9°F 200033%19%
Dec 2234°F18°F54°F 2019-11°F 200033%19%
Dec 2334°F18°F60°F 2020-10°F 201333%19%
Dec 2433°F17°F60°F 2021-16°F 201333%20%
Dec 2533°F17°F61°F 2019-18°F 200033%20%
Dec 2633°F17°F56°F 2019-9°F 201733%20%
Dec 2733°F17°F55°F 2008-14°F 201733%20%
Dec 2832°F16°F55°F 2019-1°F 200033%20%
Dec 2932°F16°F64°F 2022-3°F 201333%20%
Dec 3032°F16°F59°F 2004-8°F 201333%21%
Dec 3132°F16°F54°F 2004-14°F 201733%21%

Chance of rain

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

December 1
sunrise 7:10 AM, sunset 4:34 PM
December 31
sunrise 7:29 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 USC00117391 (Rock Island L&d 15), public domain. Records: NOAA GHCN-Daily, station USW00094982, 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.