Washington frost dates: M

City	Last frost	First frost	Season	Zone
Mabton	May 1	Oct 6	158 d	7a
Malaga	Apr 8	Oct 24	199 d	7a
Malden	May 7	Sep 28	144 d	6b
Malo	May 30	Sep 10	103 d	6a
Malone	May 1	Oct 14	166 d	8b
Malott	Apr 21	Oct 15	177 d	6b
Manchester	Mar 29	Nov 14	230 d	9a
Mansfield	Apr 26	Oct 11	168 d	6b
Manson	Apr 17	Oct 22	188 d	7a
Maple Falls	Apr 18	Oct 18	183 d	8a
Maple Valley	Apr 20	Oct 25	188 d	8b
Marblemount	Apr 16	Oct 25	192 d	7a
Marcus	May 2	Oct 2	153 d	6b
Marlin	Apr 27	Oct 8	164 d	6b
Marshall	Apr 26	Oct 12	169 d	6b
Marysville	Mar 24	Nov 2	223 d	8b
Matlock	Apr 23	Oct 20	180 d	8b
Mattawa	Mar 24	Nov 4	225 d	7a
Mazama	May 9	Sep 29	143 d	6a
Mcchord Afb	Mar 8	Nov 14	251 d	8b
Mccleary	May 1	Oct 14	166 d	8a
Mckenna	Apr 29	Oct 14	168 d	8b
Mead	Apr 26	Oct 15	172 d	6b
Medical Lake	May 10	Sep 26	139 d	6b
Medina	Mar 8	Nov 23	260 d	9a
Menlo	Apr 26	Oct 17	174 d	8b
Mercer Island	Mar 13	Nov 17	249 d	9a
Mesa	Apr 21	Oct 22	184 d	7a
Metaline	May 4	Oct 4	153 d	6a
Metaline Falls	May 4	Oct 4	153 d	6a
Methow	Apr 21	Oct 15	177 d	7a
Mica	Apr 26	Oct 15	172 d	6b
Mill Creek	Mar 9	Nov 17	253 d	8b
Milton	Mar 8	Nov 14	251 d	8b
Mineral	Apr 24	Oct 15	174 d	8a
Moclips	Apr 26	Oct 22	179 d	9a
Mohler	May 31	Sep 12	104 d	6b
Monitor	Apr 4	Oct 28	207 d	7a
Monroe	Apr 17	Oct 23	189 d	8b
Montesano	Apr 23	Oct 20	180 d	8b
Morton	Apr 24	Oct 15	174 d	8b
Moses Lake	Apr 27	Oct 8	164 d	7a
Mossyrock	Apr 7	Nov 13	220 d	8a
Mount Vernon	Mar 27	Nov 6	224 d	8b
Mountlake Terrace	Mar 8	Nov 23	260 d	9a
Moxee	May 8	Oct 4	149 d	7a
Mukilteo	Mar 9	Nov 17	253 d	8b