Baltimore Weather in September
26.8°C high · 15.7°C low · 100 mm rain · 6.8h sun
Sep is a warm month in Baltimore — not peak season, but a good time to avoid crowds.
September at a glance
| Metric | Value |
|---|---|
| Average high | 26.8°C |
| Average low | 15.7°C |
| Rainfall | 100 mm |
| Sunshine | 6.8 hours/day |
| Daylight | 12.2 hours |
What to pack in September
Pack comfortable clothes with a light layer for evenings, plus a raincoat and umbrella for Baltimore in September.
Baltimore weather by month
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Frequently asked questions
What is the weather in Baltimore in September?
Highs of 26.8°C and lows of 15.7°C, with about 100 mm of rain and 6.8 hours of sunshine per day.
Is September a good time to visit Baltimore?
Sep is a warm month in Baltimore — not peak season, but a good time to avoid crowds.
What to do in Baltimore · Best time to visit Baltimore
Climate data: Open-Meteo Historical (ERA5), 1991–2020. CC BY 4.0.