Month	Minimum	Maximum	Average
Jan	-16	-7	-11.5
Feb	-15	-5	-10
Mar	-8	1	-4
Apr	0	11	6
May	7	19	13
Jun	12	24	18
Jul	14	27	21
Aug	14	26	20
Sep	9	20	15
Oct	3	14	9
Nov	-2	5	2
Dec	-12	-4	-8