Baltimore
September
Weather in Baltimore for September 2025
Your guide to Baltimore weather in September - trends and predictions
In general, the average temperature in Baltimore at the beginning of September is 29.9 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.4 °F by the end of September.
The climate of Baltimore in September is notably wet, with an average of 15 rainy days.
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15
Dry days
15
Rainy days
0
Snow days
26°/17°
Temperatures
16 km/h
Avg max wind
68 %
Avg humidity
Baltimore in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  28° | 2 28° | 3 30° | 4  31° | 5 32° | 6 31° | 7 29° |
| 8  28° | 9 28° | 10 29° | 11 29° | 12  28° | 13 27° | 14 27° |
| 15 27° | 16 26° | 17  21° | 18 24° | 19 24° | 20 25° | 21  25° |
| 22 22° | 23 20° | 24 18° | 25 20° | 26 21° | 27 22° | 28 21° |
| 29  20° | 30 21° |
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Temperatures trend during September in Baltimore
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Sunny | 28° /19° | 2.4 mm | 7 | |
| Sept. 2 | Sunny | 28° /17° | 0 mm | 7 | |
| Sept. 3 | Sunny | 30° /16° | 0 mm | 8 | |
| Sept. 4 | Patchy rain possible | 31° /19° | 0.2 mm | 7 | |
| Sept. 5 | Sunny | 32° /19° | 0 mm | 8 | |
| Sept. 6 | Sunny | 31° /21° | 0.9 mm | 7 | |
| Sept. 7 | Patchy rain possible | 29° /20° | 0.3 mm | 7 | |
| Sept. 8 | Partly cloudy | 28° /16° | 3.1 mm | 7 | |
| Sept. 9 | Patchy rain possible | 28° /17° | 3.8 mm | 7 | |
| Sept. 10 | Light rain shower | 29° /19° | 7.5 mm | 7 | |
| Sept. 11 | Patchy rain possible | 29° /19° | 0.8 mm | 7 | |
| Sept. 12 | Mist | 28° /19° | 0 mm | 7 | |
| Sept. 13 | Light rain shower | 27° /18° | 1.2 mm | 6 | |
| Sept. 14 | Sunny | 27° /17° | 0 mm | 7 | |
| Sept. 15 | Sunny | 27° /15° | 0 mm | 7 | |
| Sept. 16 | Sunny | 26° /14° | 4 mm | 6 | |
| Sept. 17 | Heavy rain | 21° /16° | 11.9 mm | 5 | |
| Sept. 18 | Light rain shower | 24° /16° | 26.1 mm | 6 | |
| Sept. 19 | Sunny | 24° /15° | 19.2 mm | 6 | |
| Sept. 20 | Partly cloudy | 25° /16° | 0 mm | 6 | |
| Sept. 21 | Overcast | 25° /18° | 40.6 mm | 6 | |
| Sept. 22 | Patchy rain possible | 22° /16° | 2.2 mm | 5 | |
| Sept. 23 | Heavy rain | 20° /15° | 37.7 mm | 5 | |
| Sept. 24 | Light rain shower | 18° /16° | 74.3 mm | 4 | |
| Sept. 25 | Patchy rain possible | 20° /16° | 4.5 mm | 5 | |
| Sept. 26 | Patchy rain possible | 21° /18° | 1.9 mm | 5 | |
| Sept. 27 | Overcast | 22° /17° | 14.3 mm | 5 | |
| Sept. 28 | Overcast | 21° /15° | 5.8 mm | 5 | |
| Sept. 29 | Moderate or heavy rain with thunder | 20° /17° | 7.4 mm | 5 | |
| Sept. 30 | Patchy rain possible | 21° /16° | 0.2 mm | 5 | |
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Important Notice
Our weather forecast for 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 Baltimore forecast closer to your planned date for the most up-to-date weather information.
Baltimore in September - FAQ
What are the expected maximum and minimum temperatures in Baltimore during September?
During September, expect a variety of temperatures with highs around 26° and lows near 17°, suitable for diverse activities and preferences.
How much rainfall should be expected in Baltimore during September?
Significant rainfall exceeding 223.1 mm is expected in Baltimore during September, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Baltimore during September?
The average wind speed in Baltimore during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Baltimore
Explore the daily rainfall trends and prepare for Baltimores September weather 💧
UV exposure in Baltimore during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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