Willie McCovey crushed his most home runs in a month in July 1963, with 13 home runs.

	NAME	HR	MONTH	G	AB	R	H	2B	3B	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Willie McCovey W. McCovey	13	July 1963	30	116	24	36	5	0	27	10	5	21	0	0	131	80	18	0	0	1	3	.310	.389	.690	1.079
2	Willie McCovey W. McCovey	11	June 1969	27	87	18	32	7	0	29	26	2	13	0	0	115	72	18	0	0	8	6	.368	.522	.828	1.349
3	Willie McCovey W. McCovey	11	June 1968	29	102	17	31	4	0	25	15	1	18	1	0	120	68	15	0	2	4	4	.304	.392	.667	1.058
4	Willie McCovey W. McCovey	10	August 1970	31	105	25	38	11	1	28	22	1	15	0	0	129	81	22	0	1	4	1	.362	.473	.771	1.244
5	Willie McCovey W. McCovey	10	September 1963	24	90	18	29	2	1	19	4	1	22	0	0	95	63	13	0	0	0	0	.322	.358	.700	1.058
6	Willie McCovey W. McCovey	10	June 1963	27	92	17	25	2	0	22	10	0	17	0	1	102	57	12	0	0	2	1	.272	.343	.620	.963
7	Willie McCovey W. McCovey	9	May 1970	23	83	17	24	6	0	26	21	1	14	0	0	105	57	15	0	0	8	1	.289	.438	.687	1.125
8	Willie McCovey W. McCovey	9	August 1969	26	78	18	28	2	2	28	31	1	4	0	0	111	61	13	0	1	12	4	.359	.541	.782	1.323
9	Willie McCovey W. McCovey	9	August 1965	32	114	21	29	1	1	19	17	0	28	0	2	133	59	11	0	2	2	2	.254	.346	.518	.863
10	Willie McCovey W. McCovey	8	June 1979	22	75	11	21	1	0	26	11	0	16	0	1	86	46	9	0	0	2	0	.280	.372	.613	.985
11	Willie McCovey W. McCovey	8	June 1977	26	88	13	24	1	0	15	16	0	24	0	0	104	49	9	0	0	6	2	.273	.385	.557	.941
12	Willie McCovey W. McCovey	8	August 1974	18	56	14	14	3	0	17	14	1	12	0	0	72	41	11	0	1	3	0	.250	.403	.732	1.135
13	Willie McCovey W. McCovey	8	April 1969	21	73	20	23	6	0	22	19	0	10	0	0	94	53	14	0	2	8	0	.315	.447	.726	1.173
14	Willie McCovey W. McCovey	8	September 1967	25	92	12	20	1	1	21	17	1	29	1	1	111	47	10	0	1	8	0	.217	.342	.511	.853
15	Willie McCovey W. McCovey	8	September 1966	24	86	15	28	5	1	19	15	0	25	0	0	101	59	14	0	0	2	1	.326	.426	.686	1.112
16	Willie McCovey W. McCovey	8	May 1966	21	60	13	22	2	0	16	6	1	8	0	0	68	48	10	0	1	1	0	.367	.426	.800	1.226
17	Willie McCovey W. McCovey	8	May 1965	28	99	25	32	5	1	26	12	3	18	0	0	114	63	14	0	0	1	2	.323	.412	.636	1.049
18	Willie McCovey W. McCovey	8	August 1959	27	102	15	38	3	2	22	10	3	18	2	0	115	69	13	0	0	1	1	.373	.443	.676	1.120
19	Willie McCovey W. McCovey	7	September 1977	23	79	8	26	4	0	18	8	0	17	1	0	87	51	11	0	0	0	3	.329	.391	.646	1.036
20	Willie McCovey W. McCovey	7	September 1975	24	85	10	22	3	0	21	13	0	11	0	0	99	46	10	0	1	1	4	.259	.354	.541	.895
21	Willie McCovey W. McCovey	7	July 1974	21	63	10	19	2	0	16	16	0	16	0	0	79	42	9	0	0	1	3	.302	.443	.667	1.110
22	Willie McCovey W. McCovey	7	May 1969	21	67	14	22	2	0	16	11	0	11	0	0	79	45	9	0	1	5	1	.328	.418	.672	1.089
23	Willie McCovey W. McCovey	7	August 1966	28	94	20	25	6	2	17	18	2	17	1	0	114	56	15	0	0	3	1	.266	.395	.596	.990
24	Willie McCovey W. McCovey	7	September 1965	30	96	17	27	4	0	20	18	0	17	0	1	115	52	11	0	1	2	2	.281	.391	.542	.933
25	Willie McCovey W. McCovey	7	July 1965	25	87	13	24	2	2	11	14	1	21	0	0	102	51	11	0	0	0	0	.276	.382	.586	.969