1999 Colorado Rockies season Game log August

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| August 1 | @ Cardinals | 5–4 | Jiménez (5–11) | 45906 | 47–58 |
| August 3 | @ Reds | 2–1 | DeJean (2–4) | 22516 | 47–59 |
| August 4 | @ Reds | 6–3 | Kile (6–11) | 22314 | 47–60 |
| August 5 | @ Reds | 2–1 | Guzmán (5–10) | 24318 | 48–60 |
| August 6 | @ Marlins | 9–1 | Jones (5–9) | 14032 | 48–61 |
| August 7 | @ Marlins | 4–1 | Bohanon (10–9) | 18469 | 48–62 |
| August 8 | @ Marlins | 2–1 | Wright (0–2) | 17691 | 48–63 |
| August 9 | @ Brewers | 7–6 | Veres (2–4) | 17463 | 48–64 |
| August 10 | @ Brewers | 2–1 (10) | Veres (2–5) | 19758 | 48–65 |
| August 11 | @ Brewers | 8–5 | Woodard (11–7) | 21632 | 49–65 |
| August 13 | Expos | 14–13 (10) | DiPoto (3–4) | 40092 | 49–66 |