Maryland (Baltimore)
September
Weather in Maryland for September 2025
Your guide to Maryland weather in September - trends and predictions
In general, the average temperature in Maryland 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 Maryland 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
Maryland 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 Maryland
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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 Maryland 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 Maryland forecast closer to your planned date for the most up-to-date weather information.
Maryland in September - FAQ
What are the expected maximum and minimum temperatures in Maryland 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 Maryland during September?
Significant rainfall exceeding 223.1 mm is expected in Maryland during September, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Maryland during September?
The average wind speed in Maryland during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Maryland
Explore the daily rainfall trends and prepare for Marylands September weather 💧
UV exposure in Maryland during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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