Baltimore Weather in September

September in Baltimore typically sees daytime highs of 27°C (81°F) and nighttime lows of 17°C (63°F). Rainfall is also possible this month, so it's worth packing an umbrella.

Rainfall in Baltimore in September

You can expect rain on around 9 days based on historical patterns, with 123 mm (4.8 in) average for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Baltimore in September

September in Baltimore brings high temperatures, with highs of 27°C (81°F) and nights around 17°C (63°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Baltimore in September

The days are predominantly sunny, with an estimated total of around 225 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Baltimore.

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• January
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• October
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For a detailed overview over the year and the best time to visit the United States of America, check out our Baltimore's climate page.

Baltimore Temperature in September

Min Temperature 17°C (63°F)  

Max Temperature 27°C (81°F)  

Chance of Rain 30%  

Precipitation 123 mm (4.8 in)  

Rainy days 9 days  

Humidity 68% *  

Sunshine 225 hours *  

Percentage Sunshine 60% *  

* Data from: Washington DC, the United States of America (60 KM, 37 Miles).

What to Wear in Baltimore in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Baltimore in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Baltimore's climate page.

More climate data for Baltimore

Temperature Rainfall Sunshine Humidity

See the full Baltimore climate overview or explore weather in the United States of America.