Aurora, IL weather in December
December in Aurora: cold, with some rain and some snow. Highs 36°F, lows 22°F, about 9 days with rain or snow and about 6.4 in of snow.
- Normal high
- 36°F
- Normal low
- 22°F
- Wet days
- 9
- 2.2 in total
- Snowfall
- 6.4 in
- snow on the ground 10 days
How December changes from start to finish
| December 1 | December 31 | |
|---|---|---|
| Normal high | 41°F | 32°F |
| Normal low | 26°F | 18°F |
| Chance of a wet day | 31% | 29% |
| Sunrise / sunset | 7:01 am / 4:23 pm | 7:20 am / 4:32 pm |
| Daylight | 9.4 h | 9.2 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical December day
- 6 am26°Fdew point 21°F
- 9 am28°Fdew point 22°F
- Noon32°Fdew point 24°F
- 3 pm33°Fdew point 24°F
- 6 pm30°Fdew point 23°F
- 9 pm29°Fdew point 23°F
NOAA hourly normals (local standard time) from West Chicago Dupage Airport (11 mi away); average wind 10 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F0 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow9 of 31
- Notable rainat least 0.10 in5 of 31
- Freezing nightslow 32°F or below27 of 31
- Snow on the groundsnow depth 1 in or more10 of 31
Average days per December, counted from daily records for each year 1991-2020.
Rain and snow in December
Normal precipitation is 2.2 in; a dry December brings about 1.3 in and a wet one about 3.0 in (25th and 75th percentiles). About 1 day brings half an inch or more, and about 1 an inch or more. Normal snowfall is 6.4 in, with about 2 days of an inch or more.
How December varies from year to year
- Warmest December, 1991-20202015: average high 45°F
- Coolest December2000: average high 25°F
- Wettest December2015: 6.1 in
- Driest December2017: 0.5 in
- Highest reading70°F (December 4, 2012)
- Lowest reading-16°F (December 25, 2000)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
December compared with November and January
| November | December | January | |
|---|---|---|---|
| Normal high | 48°F | 36°F | 31°F |
| Normal low | 32°F | 22°F | 16°F |
| Wet days | 9 | 9 | 9 |
| Comfortable days | 3 | 0 | 0 |
| Daylight | 9.8 h | 9.2 h | 9.6 h |
Highs change by -12°F from November and -5°F into January.
Nearby alternatives in December
- Warmer: Springfield, IL152 mi · high 41°F · 9 wet days
How Aurora ranks in December
- Normal high331st warmest of 378 cities; 5th of 8 in Illinois
- Wet days180th driest of 378
- Comfortable days251st most of 340
What to pack for Aurora in December
- A warm jacket – lows near 22°F, highs near 36°F
- A rain jacket or umbrella – rain or snow on about 9 days
- Waterproof boots – about 6.4 in of snow in a typical year
- A hat and gloves – about 27 freezing nights
Heating and cooling
December has 1125 heating degree days and 0 cooling degree days (base 65°F), 16% of the year's total heating and cooling demand.
Questions
How cold is Aurora in December?
The normal high is 36°F and the normal low is 22°F. From 1991 to 2020 the coldest December reading was -16°F (December 25, 2000).
Does it rain a lot in Aurora in December?
About 9 days in December have at least 0.01 in of precipitation, and the normal total is 2.2 in. The wettest December in 1991-2020 was in 2015 (6.1 in); the driest was in 2017 (0.5 in).
Does it snow in Aurora in December?
Yes. Normal snowfall in December is 6.4 in, and snow covers the ground on about 10 days.
Is December a good time to visit Aurora?
December ranks 11th of 12 months on our comfort score for Aurora (28 out of 100). It has almost no comfortable days. The best month is May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth and frost dates: Aurora (USC00110338), 1.5 mi NNE of the city center, 660 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: West Chicago Dupage Airport (USW00094892), 11 mi NNE of the city center, 754 ft (79 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Chicago O'hare International Airport (725300-94846), 24 mi NE of the city center, 672 ft . Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).