Typically the weather in Olympia during September is 21. Average highs are typically 28 and average daily low being 17. Discover more information below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 21 |
| High Temperature | 28 |
| Low Temperature | 17 |
| Sunshine Per Day | 13 |
Useful Links: Olympia Weather: Average Weather & Yearly Climate