Frank Thomas smashed his most homers in a month in August 2003, 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	Frank Thomas F. Thomas	13	August 2003	27	99	17	26	2	0	31	17	1	23	0	0	118	67	15	0	1	1	1	.263	.373	.677	1.050
2	Frank Thomas F. Thomas	12	June 2000	26	97	28	32	4	0	28	21	1	18	0	0	120	72	16	0	1	4	4	.330	.450	.742	1.192
3	Frank Thomas F. Thomas	12	May 1994	25	84	39	38	9	0	28	31	1	11	0	0	118	83	21	0	2	3	3	.452	.593	.988	1.581
4	Frank Thomas F. Thomas	11	September 1996	23	88	19	30	3	0	24	13	2	9	0	0	104	66	14	0	1	3	5	.341	.433	.750	1.183
5	Frank Thomas F. Thomas	11	July 1993	26	87	23	30	4	0	25	27	0	5	1	0	115	67	15	0	1	6	3	.345	.496	.770	1.266
6	Frank Thomas F. Thomas	10	September 2006	26	98	17	26	3	0	31	11	0	15	0	0	110	59	13	0	1	1	4	.265	.336	.602	.938
7	Frank Thomas F. Thomas	10	June 1995	27	98	19	29	5	0	21	23	1	14	1	1	123	64	15	0	1	4	2	.296	.431	.653	1.084
8	Frank Thomas F. Thomas	10	August 1993	28	102	21	34	7	0	26	16	0	8	2	0	121	71	17	0	3	3	1	.333	.413	.696	1.109
9	Frank Thomas F. Thomas	9	August 2000	28	102	21	34	10	0	30	18	2	13	0	0	123	71	19	0	1	3	2	.333	.439	.696	1.135
10	Frank Thomas F. Thomas	9	July 1997	27	106	20	34	8	0	31	11	0	12	0	0	118	69	17	0	1	2	2	.321	.381	.651	1.032
11	Frank Thomas F. Thomas	9	May 1997	26	86	28	37	6	0	29	27	1	13	0	0	117	70	15	0	3	4	2	.430	.556	.814	1.370
12	Frank Thomas F. Thomas	9	July 1995	29	97	25	35	8	0	23	28	1	12	1	0	130	70	17	0	4	6	3	.361	.492	.722	1.214
13	Frank Thomas F. Thomas	9	June 1994	27	95	24	35	5	1	16	20	1	14	0	2	117	69	15	0	1	2	6	.368	.479	.726	1.205
14	Frank Thomas F. Thomas	8	June 2005	19	53	11	12	1	0	13	9	0	15	0	0	64	37	9	0	2	0	1	.226	.328	.698	1.026
15	Frank Thomas F. Thomas	8	June 2004	24	80	18	21	5	0	20	18	4	22	0	1	103	50	13	0	1	1	0	.263	.417	.625	1.042
16	Frank Thomas F. Thomas	8	July 2003	26	105	16	25	6	0	20	11	1	20	0	0	118	55	14	0	1	0	1	.238	.314	.524	.837
17	Frank Thomas F. Thomas	8	April 1996	24	90	19	34	6	0	23	21	0	13	1	0	113	64	14	0	2	5	4	.378	.487	.711	1.198
18	Frank Thomas F. Thomas	8	April 1994	23	88	20	26	6	0	20	21	0	14	0	0	109	56	14	0	0	1	1	.295	.431	.636	1.068
19	Frank Thomas F. Thomas	8	June 1993	28	103	21	36	5	0	23	21	0	8	1	1	125	65	13	0	1	5	2	.350	.456	.631	1.087
20	Frank Thomas F. Thomas	8	August 1991	30	110	19	41	8	1	27	24	0	14	0	0	135	75	17	0	1	0	4	.373	.481	.682	1.163
21	Frank Thomas F. Thomas	7	July 2006	27	87	14	24	2	0	20	18	3	21	0	0	109	47	9	0	1	0	3	.276	.413	.540	.953
22	Frank Thomas F. Thomas	7	June 2003	26	87	18	29	9	0	17	20	2	21	0	0	109	59	16	0	0	0	2	.333	.468	.678	1.146
23	Frank Thomas F. Thomas	7	May 2002	28	100	15	26	7	0	22	14	2	20	1	0	118	54	14	0	2	1	3	.260	.356	.540	.896
24	Frank Thomas F. Thomas	7	July 2000	26	97	21	33	7	0	24	24	0	24	0	1	121	61	14	0	0	2	2	.340	.471	.629	1.100
25	Frank Thomas F. Thomas	7	August 1998	29	104	18	26	5	2	19	22	0	12	0	0	128	56	14	0	2	0	4	.250	.375	.538	.913