highest batting average in a calendar month of all-time (minimum 90 at bats)

Joe Jackson has the best batting average with 90+ at-bats in a month, with an average of .529 in June 1912.

Interpreted as:

highest batting average by a player in a calendar month of all-time (minimum 90 at bats)

	NAME	AVG	AB	MONTH	G	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	OBP	SLG	OPS
1	Joe Jackson J. Jackson	.529	102	June 1912	29	28	54	16	8	1		7	2		4		113	89	25	2				.568	.873	1.440
2	Ty Cobb T. Cobb	.528	127	July 1912	30	33	67	11	8	3	21	9	1		15		137	103	22	0				.562	.811	1.373
3	George Sisler G. Sisler	.526	114	June 1920	29	33	60	9	3	4	26	13	1	2	9		131	87	16	3				.578	.763	1.341
4	Ty Cobb T. Cobb	.521	96	July 1918	25	17	50	4	4	1	20	10	0	3	7		107	65	9	1				.566	.677	1.243
5	Rogers Hornsby R. Hornsby	.509	106	August 1924	29	29	54	13	2	8	22	15	0	7	0		127	95	23	6				.570	.896	1.466
6	Harry Heilmann H. Heilmann	.505	97	August 1927	28	28	49	9	3	5	22	19	0	1	1		119	79	17	3				.586	.814	1.401
7	Joe Jackson J. Jackson	.505	97	May 1913	27	24	49	10	7	1	23	16	1	5	4		114	76	18	0				.579	.784	1.362
8	Lou Gehrig L. Gehrig	.495	111	June 1930	28	37	55	11	3	10	41	20	3	10	5		137	102	24	3				.582	.919	1.501
9	Heinie Manush H. Manush	.495	103	September 1928	25	22	51	10	5	5	28	9	0	1	3		112	86	20	0				.536	.835	1.371
10	Ty Cobb T. Cobb	.495	97	June 1911	23	20	48	4	5	1	28	2	3		14		103	65	10	1				.520	.670	1.190
11	Tristram Speaker T. Speaker	.489	137	July 1923	33	35	67	18	4	4	37	14	0	0	1		155	105	26	4				.536	.766	1.303
12	Ty Cobb T. Cobb	.489	137	July 1922	32	26	67	18	1	2	25	12	2	5	5		154	93	21	3				.536	.679	1.215
13	Bobby Witt Jr. B. Witt Jr.	.489	90	July 2024	23	26	44	8	1	7	22	6	2	10	2	2	100	75	16	0	2	0	0	.520	.833	1.353
14	Rogers Hornsby R. Hornsby	.488	125	July 1923	31	31	61	13	4	7	39	14	0	12	0		142	103	24	3				.540	.824	1.364
15	Rod Carew R. Carew	.486	111	June 1977	28	30	54	7	8	3	30	15	1	6	4	3	130	86	18	0	3	4	1	.538	.775	1.313
16	Wade Boggs W. Boggs	.485	101	June 1987	26	26	49	8	4	4	19	22	1	5	0	0	125	77	16	1	0	8	4	.581	.762	1.343
17	Jose Altuve J. Altuve	.485	99	July 2017	23	22	48	10	1	4	21	7	1	9	8	2	107	72	15	0	0	0	2	.523	.727	1.251
18	Charlie Gehringer C. Gehringer	.484	122	August 1937	32	38	59	11	0	7	38	30	0	2	6		152	91	18	0				.586	.746	1.331
19	Rogers Hornsby R. Hornsby	.480	100	June 1925	28	31	48	9	2	9	31	25	0	6	2		126	88	20	1				.584	.880	1.464
20	Harry Heilmann H. Heilmann	.480	98	September 1928	25	12	47	6	3	4	24	5	0	3	2		104	71	13	1				.505	.724	1.229
21	Ty Cobb T. Cobb	.477	107	June 1917	27	22	51	9	8	3	24	9	1	5	12		119	85	20	2				.521	.794	1.316
22	Todd Helton T. Helton	.476	105	August 2000	29	22	50	18	0	7	32	17	2	7	2	0	126	89	25	0	2	5	1	.548	.848	1.395
23	Richard Hidalgo R. Hidalgo	.476	103	September 2000	28	36	49	14	2	11	31	11	4	9	5	0	120	100	27	0	2	2	0	.533	.971	1.504
24	Paul Molitor P. Molitor	.476	103	September 1989	25	18	49	13	0	2	18	5	0	7	7	1	110	68	15	0	2	0	3	.491	.660	1.151
25	Dave Winfield D. Winfield	.476	103	June 1984	24	20	49	10	1	2	19	5	0	11	3	1	109	67	13	0	1	0	2	.495	.650	1.146