Westchester December Weather Averages Illinois, United States of America

December Weather Averages for Westchester

High Temp	3°C	37°F
Low Temp	-2°C	28°F
Avg Temp	0°C	32°F
Sunshine Hours	123 hours
Rainfall	68.75 mm	2.71 In
Rain days	7 days
Pressure	1019 mb	31 In

Westchester December Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	0°C / 32°F	-8°C / 18°F	-4°C / 25°F	121 hours	151.53 mm / 5.97 In	12 days	1019 mb / 31 In
2009	0°C / 33°F	-5°C / 24°F	-2°C / 29°F	83 hours	91.80 mm / 3.61 In	10 days	1017 mb / 31 In
2010	-2°C / 29°F	-7°C / 19°F	-4°C / 24°F	88 hours	60.88 mm / 2.40 In	10 days	1020 mb / 31 In
2011	4°C / 40°F	-1°C / 31°F	2°C / 35°F	180 hours	45.84 mm / 1.80 In	7 days	1021 mb / 31 In
2012	5°C / 41°F	0°C / 32°F	2°C / 36°F	91 hours	69.90 mm / 2.75 In	9 days	1016 mb / 30 In
2013	-1°C / 30°F	-8°C / 18°F	-4°C / 25°F	96 hours	64.60 mm / 2.54 In	11 days	1020 mb / 31 In
2014	2°C / 36°F	-2°C / 29°F	0°C / 33°F	112 hours	34.40 mm / 1.35 In	4 days	1023 mb / 31 In
2015	6°C / 44°F	2°C / 36°F	4°C / 39°F	104 hours	153.03 mm / 6.02 In	9 days	1015 mb / 30 In
2016	-1°C / 30°F	-7°C / 20°F	-4°C / 25°F	107 hours	50.20 mm / 1.98 In	8 days	1022 mb / 31 In
2017	1°C / 33°F	-4°C / 24°F	-2°C / 29°F	169 hours	19.90 mm / 0.78 In	6 days	1020 mb / 31 In
2018	4°C / 38°F	-1°C / 30°F	1°C / 34°F	168 hours	105.50 mm / 4.15 In	8 days	1019 mb / 31 In
2019	5°C / 41°F	-1°C / 30°F	2°C / 35°F	175 hours	47.50 mm / 1.87 In	4 days	1017 mb / 31 In
2020	3°C / 38°F	-2°C / 29°F	1°C / 33°F	165 hours	62.53 mm / 2.46 In	7 days	1017 mb / 31 In
2021	7°C / 45°F	0°C / 33°F	4°C / 38°F	184 hours	68.80 mm / 2.71 In	3 days	1015 mb / 30 In
2022	2°C / 36°F	-4°C / 25°F	-1°C / 31°F	58 hours	68.30 mm / 2.69 In	5 days	1018 mb / 31 In
2023	7°C / 44°F	2°C / 36°F	4°C / 40°F	116 hours	69.88 mm / 2.75 In	8 days	1018 mb / 31 In
2024	1°C / 34°F	-3°C / 27°F	-1°C / 31°F	66 hours	86.98 mm / 3.42 In	4 days	1021 mb / 31 In

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