The attached table shows the performance of the Dow over the last 10 years by season.
Note that the summer months Q3 (July- September) are the worst performing months with 6 out of 10 years being down and only 2 out of 10 being up.
Q4 is historically the best performing months with 8 up years and no down years.
Q1 is more up than down and Q2 is about even with 3 down years and 4 up years.
Quarter | Number of Down Years | Number of Flat Years | Number of Up Years |
Q1 Jan-Mar | 2 | 4 | 4 |
Q2 Apr- Jun | 3 | 3 | 4 |
Q3 Jul-Sep | 6 | 2 | 2 |
Q4 Oct-Dec | 0 | 2 | 8 |