Grand Rapids, Michigan, Climate Update for December 2018:
Max temp 53, Mean Max temp 53
Min temp 13 (tied for 11th highest min on record with 5 other years), Mean Min temp 4
Av temp 32.5, Mean Av temp 28.3
Av temp 2018 49.6, Mean Av temp 48.2
Precip 1.99, Mean precip 2.43
Precip 2018 44.45 (11th wettest year on record), Mean precip 34.60
Snow 3.2 (6th least snow in Dec on record), Mean snow 16.1
Snow season to date 17.6, Mean snow season to date 22.8
CDD 2018 1003 (7th highest season on record), Mean CDD 693
HDD 1000, Mean HDD 1130
HDD season to date 2472, Mean HDD season to date 2486
