Jeff Bagwell has smashed the most homers for the Astros in a month, with 13 home runs in June 1994.

	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	Jeff Bagwell J. Bagwell	13	June 1994	26	99	30	39	11	0	28	10	1	12	3	0	110	89	24	0	0	3	5	.394	.455	.899	1.354
2	Yuli Gurriel Y. Gurriel	12	July 2019	24	98	18	40	7	0	31	4	1	12	0	0	103	83	19	0	0	0	0	.408	.437	.847	1.284
3	Alex Bregman A. Bregman	12	May 2019	28	104	23	27	3	0	24	17	1	17	0	1	124	66	15	0	2	0	1	.260	.363	.635	.998
4	Chris Carter C. Carter	12	August 2014	29	111	20	30	2	0	29	10	0	39	1	0	122	68	14	0	1	0	2	.270	.328	.613	.940
5	Ty Wigginton T. Wigginton	12	August 2008	28	103	19	39	6	1	26	1	3	19	0	2	109	83	19	0	2	0	2	.379	.394	.806	1.200
6	Moises Alou M. Alou	12	June 2001	25	103	22	38	5	0	25	8	0	10	0	0	112	79	17	0	1	3	5	.369	.411	.767	1.178
7	Jeff Bagwell J. Bagwell	12	August 2000	28	100	31	38	7	0	34	18	2	14	3	1	121	81	19	0	1	2	1	.380	.479	.810	1.289
8	Kyle Tucker K. Tucker	11	May 2024	28	97	19	21	4	0	19	23	0	21	4	0	121	58	15	0	1	0	3	.216	.364	.598	.962
9	Alex Bregman A. Bregman	11	June 2018	26	108	24	33	9	1	30	12	0	16	1	1	121	77	21	0	1	0	2	.306	.372	.713	1.085
10	George Springer G. Springer	11	June 2017	26	105	24	35	9	0	21	12	2	23	0	1	119	77	20	0	0	0	0	.333	.412	.733	1.145
11	Lance Berkman L. Berkman	11	September 2005	28	94	22	30	4	0	27	25	0	16	2	1	121	67	15	0	2	5	4	.319	.455	.713	1.167
12	Richard Hidalgo R. Hidalgo	11	September 2000	28	103	36	49	14	2	31	11	4	9	5	0	120	100	27	0	2	2	0	.476	.533	.971	1.504
13	Jeff Bagwell J. Bagwell	11	June 1999	28	93	30	28	3	0	23	30	1	23	3	2	125	64	14	0	1	5	0	.301	.472	.688	1.160
14	Jeff Bagwell J. Bagwell	11	July 1994	24	88	27	36	8	0	29	20	1	14	5	1	112	77	19	0	3	5	1	.409	.509	.875	1.384
15	Jimmy Wynn J. Wynn	11	May 1969	26	86	27	19	1	0	20	24	1	21	0	0	114	53	12	1	2	0	0	.221	.389	.616	1.006
16	Jimmy Wynn J. Wynn	11	June 1967	30	117	23	31	7	1	29	15	0	26	4	1	134	73	19	1	1	1	1	.265	.346	.624	.970
17	Jose Altuve J. Altuve	10	June 2021	27	101	24	26	3	0	20	24	1	24	2	0	129	59	13	0	3	1	2	.257	.395	.584	.980
18	George Springer G. Springer	10	September 2019	20	69	17	19	1	0	19	9	0	16	1	0	78	50	11	0	0	0	1	.275	.359	.725	1.084
19	Evan Gattis E. Gattis	10	September 2016	25	86	15	22	1	0	14	11	0	28	0	0	99	53	11	0	2	2	2	.256	.333	.616	.950
20	George Springer G. Springer	10	May 2014	26	102	22	30	4	1	25	13	2	36	0	1	117	66	15	0	0	0	4	.294	.385	.647	1.032
21	Lance Berkman L. Berkman	10	April 2006	24	92	16	32	5	0	29	13	0	8	0	1	109	67	15	0	4	1	3	.348	.413	.728	1.141
22	Morgan Ensberg M. Ensberg	10	June 2005	26	94	21	27	3	0	28	12	2	17	2	0	111	60	13	0	3	0	0	.287	.369	.638	1.008
23	Carlos Beltran C. Beltran	10	August 2004	28	101	25	26	6	0	21	22	2	19	16	0	127	62	16	1	1	1	3	.257	.397	.614	1.011
24	Jeff Bagwell J. Bagwell	10	July 2003	27	87	23	25	1	0	25	22	1	14	3	0	111	56	11	0	1	1	2	.287	.432	.644	1.076
25	Jeff Bagwell J. Bagwell	10	April 2003	26	105	15	33	5	0	19	11	2	11	1	1	118	68	15	0	0	0	7	.314	.390	.648	1.037