The Baltimore Orioles had their most wins in a month in June 1966, with 25 wins.

	TEAM	W	MONTH	L	W%	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Orioles	25	June 1966	8	.758	33	1,185	189	336	58	10	40	178	108	4	154	5	12	1,322	534	108	13	12	13	32	.284	.342	.451	.793
2	Orioles	23	June 1979	6	.793	29	924	131	241	37	4	34	120	117	3	149	20	7	1,063	388	75	10	9	9	32	.261	.343	.420	.763
3	Orioles	23	September 1974	6	.793	29	1,019	127	268	40	4	25	117	106	8	139	37	12	1,157	391	69	16	8	13	25	.263	.335	.384	.719
4	Browns	23	August 1945	12	.657	35	1,184	179	341	55	14	15	171	126	6	108	5		1,346	469	84	30			15	.288	.359	.396	.756
5	Orioles	22	August 1970	8	.733	30	1,014	146	258	36	4	33	133	125	11	162	23	7	1,172	401	73	15	7	14	19	.254	.341	.395	.736
6	Orioles	22	August 1968	12	.647	34	1,162	134	258	48	9	30	123	130	12	234	27	5	1,330	414	87	15	11	21	15	.222	.304	.356	.660
7	Orioles	22	August 1960	8	.733	30	1,033	162	285	43	6	38	150	91	11	155	4	6	1,163	454	87	20	8	8	14	.276	.339	.439	.778
8	Orioles	21	May 1981	8	.724	29	973	145	276	58	5	23	138	126	9	122	11	10	1,128	413	86	9	11	10	33	.284	.367	.424	.792
9	Orioles	21	September 1980	9	.700	30	1,058	172	303	51	3	38	161	111	5	156	27	7	1,187	474	92	4	9	15	31	.286	.354	.448	.802
10	Orioles	21	August 1980	8	.724	29	971	129	266	52	4	29	118	88	2	115	10	7	1,080	413	85	10	9	5	27	.274	.333	.425	.758
11	Orioles	21	September 1977	9	.700	30	1,047	161	298	51	5	31	152	106	3	171	16	6	1,170	452	87	6	8	8	30	.285	.350	.432	.781
12	Orioles	21	August 1975	11	.656	32	1,130	147	303	49	7	21	138	95	10	177	26	7	1,249	429	77	10	4	9	25	.268	.329	.380	.709
13	Orioles	21	September 1973	11	.656	32	1,138	185	332	52	13	26	170	134	12	152	38	12	1,297	488	91	8	5	12	24	.292	.371	.429	.800
14	Orioles	21	August 1973	9	.700	30	1,005	151	283	52	7	21	139	121	5	136	19	10	1,151	412	80	7	13	9	19	.282	.358	.410	.767
15	Orioles	21	September 1970	7	.750	28	969	135	242	33	5	28	129	125	4	173	14	13	1,121	369	66	9	14	12	23	.250	.334	.381	.714
16	Orioles	21	June 1969	6	.778	27	957	151	270	46	5	36	137	110	10	132	21	6	1,100	434	87	11	12	12	26	.282	.358	.454	.812
17	Orioles	21	May 1964	10	.677	31	1,043	141	270	46	6	23	132	100	8	199	21	9	1,177	397	75	13	13	10	23	.259	.325	.381	.705
18	Browns	21	August 1921	11	.656	32	1,154	184	361	47	23	14	160	74	7	97	22		1,285	496	84	50				.313	.358	.430	.788
19	Browns	21	August 1916	9	.700	31	1,035	122	264	32	8	4		122	8	133	43		1,194	324	44	29				.255	.338	.313	.651
20	Orioles	20	September 1999	8	.714	28	964	160	264	56	4	31	147	91	14	163	13	6	1,087	421	91	9	9	8	25	.274	.342	.437	.779
21	Orioles	20	May 1997	8	.714	28	944	158	254	40	4	37	153	114	14	177	17	6	1,090	413	81	9	9	12	24	.269	.353	.438	.791
22	Orioles	20	June 1993	7	.741	27	927	144	259	59	2	28	133	110	5	141	12	9	1,059	406	89	9	8	11	16	.279	.356	.438	.794
23	Orioles	20	September 1983	11	.645	31	1,072	156	300	50	3	33	151	126	6	166	15	9	1,224	455	86	7	13	9	31	.280	.355	.424	.779
24	Orioles	20	July 1977	8	.714	28	954	121	235	37	4	24	113	94	4	180	13	9	1,073	352	65	12	9	11	22	.246	.314	.369	.683
25	Orioles	20	September 1976	10	.667	30	1,000	119	252	37	5	21	112	94	2	138	37	10	1,116	362	63	12	8	5	23	.252	.315	.362	.677