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United States weather

Weather in City of Baltimore, Maryland for September 2025

Your guide to City of Baltimore weather in September - trends and predictions

    Official Weather Alert ⚠️

  • Coastal Flood Advisory - See hour by hour.

    • Temperatures

  • Until now, September 2025 in City of Baltimore is slightly cooler than the historical average by -1.5 °F.

  • Expect cooler weather in the next days in City of Baltimore with the forecast suggesting a temperature of 25.3 °F, lower than the historical average.

  • In general, the average temperature in City of Baltimore at the beginning of September is 29 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24.6 °F by the end of September.

    • Rain 🌧️

  • City of Baltimore in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 270.4 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
12
Dry days
Average rainy days
18
Rainy days
Average snowy days
0
Snow days
Average temperatures
25°/17°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
69 %
Avg humidity

City of Baltimore Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
27°
2
Cloudy
27°
3
Sunny
28°
4
Patchy rain possible
31°
5
Sunny
32°
6
Light rain shower
31°
7
Patchy rain possible
27°
8
Sunny
27°
9
Patchy rain possible
26°
10
Light rain shower
27°
11
Patchy rain possible
28°
12
Mist
28°
13
Light rain shower
27°
14
Partly cloudy
28°
15
Sunny
28°
16
Sunny
24°
17
Weather Alert Patchy rain possible
19°
18
Partly cloudy
30°
19
Patchy rain possible
33°
20
Overcast
26°
21
Patchy rain possible
22°
22
Patchy rain possible
26°
23
Partly cloudy
26°
24
Partly cloudy
26°
25
Patchy rain possible
27°
26
Moderate rain
28°
27
Moderate rain
21°
28
Patchy rain possible
24°
29
Patchy rain possible
22°
30
Moderate rain
24°

Temperatures trend during September in City of Baltimore

See the weather trend as well as the moving average line

September weather in City of Baltimore day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Sunny
Sunny
 27° /18° 1.6 mm 6
Sept. 2 Cloudy
Cloudy
 27° /17° 0 mm 7
Sept. 3 Sunny
Sunny
 28° /17° 0 mm 7
Sept. 4 Patchy rain possible
Patchy rain possible
 31° /19° 6 mm 7
Sept. 5 Sunny
Sunny
 32° /20° 6.4 mm 8
Sept. 6 Light rain shower
Light rain shower
 31° /21° 41.7 mm 7
Sept. 7 Patchy rain possible
Patchy rain possible
 27° /19° 14.7 mm 6
Sept. 8 Sunny
Sunny
 27° /15° 2.1 mm 7
Sept. 9 Patchy rain possible
Patchy rain possible
 26° /16° 2.6 mm 7
Sept. 10 Light rain shower
Light rain shower
 27° /18° 5 mm 6
Sept. 11 Patchy rain possible
Patchy rain possible
 28° /18° 0.5 mm 7
Sept. 12 Mist
Mist
 28° /18° 0 mm 7
Sept. 13 Light rain shower
Light rain shower
 27° /18° 0.8 mm 6
Sept. 14 Partly cloudy
Partly cloudy
 28° /18° 0 mm 7
Sept. 15 Sunny
Sunny
 28° /16° 0.9 mm 7
Sept. 16 Sunny
Sunny
 24° /15° 2.7 mm 6
Sept. 17 Patchy rain possible
Patchy rain possible
 19° /16° 3.3 mm 0.4
Sept. 18 Partly cloudy
Partly cloudy
 30° /18° 0 mm 1.3
Sept. 19 Patchy rain possible
Patchy rain possible
 33° /19° 3.5 mm 1.5
Sept. 20 Overcast
Overcast
 26° /15° 0 mm 1.5
Sept. 21 Patchy rain possible
Patchy rain possible
 22° /17° 0.2 mm 0
Sept. 22 Patchy rain possible
Patchy rain possible
 26° /19° 0.1 mm 5
Sept. 23 Partly cloudy
Partly cloudy
 26° /19° 0 mm 6
Sept. 24 Partly cloudy
Partly cloudy
 26° /20° 0 mm 6
Sept. 25 Patchy rain possible
Patchy rain possible
 27° /21° 0.2 mm 5
Sept. 26 Moderate rain
Moderate rain
 28° /20° 6.3 mm 5
Sept. 27 Moderate rain
Moderate rain
 21° /20° 5.1 mm 5
Sept. 28 Patchy rain possible
Patchy rain possible
 24° /21° 3.5 mm 5
Sept. 29 Patchy rain possible
Patchy rain possible
 22° /20° 0.4 mm 5
Sept. 30 Moderate rain
Moderate rain
 24° /19° 8.1 mm 5
Next
Important Notice
Our weather forecast for City of Baltimore in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the City of Baltimore forecast closer to your planned date for the most up-to-date weather information.
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City of Baltimore in September - FAQ

What are the expected maximum and minimum temperatures in City of Baltimore during September?
During September, expect a variety of temperatures with highs around 25° and lows near 17°, suitable for diverse activities and preferences.
How much rainfall should be expected in City of Baltimore during September?
Significant rainfall exceeding 270.4 mm is expected in City of Baltimore during September, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in City of Baltimore during September?
The average wind speed in City of Baltimore during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in City of Baltimore

Explore the daily rainfall trends and prepare for City of Baltimores September weather 💧

UV exposure in City of Baltimore during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Get accurate weather forecasts for City of Baltimore, located at latitude 39.29 and longitude -76.612. Stay updated with localized weather information tailored for City of Baltimore.

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