Weather in Pasadena, Maryland for September 2025
Coastal Flood Advisory - See hour by hour.
Until now, September 2025 in Pasadena is slightly cooler than the historical average by -1.8 °F.
Expect cooler weather in the next days in Pasadena with the forecast suggesting a temperature of 24.8 °F, lower than the historical average.
In general, the average temperature in Pasadena at the beginning of September is 28.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24 °F by the end of September.
Pasadena in September brings notable rainfall, with an average of 17 rainy days and a total precipitation of 223.7 mm.
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Pasadena Weather September
Temperatures trend during September in Pasadena
September weather in Pasadena day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 27° /18° | 1.7 mm | 6 | |
| Sept. 2 | Sunny | 27° /18° | 0 mm | 6 | |
| Sept. 3 | Sunny | 27° /17° | 0 mm | 7 | |
| Sept. 4 |  Thundery outbreaks possible | 30° /19° | 3 mm | 7 | |
| Sept. 5 | Sunny | 31° /20° | 5.4 mm | 8 | |
| Sept. 6 | Sunny | 31° /21° | 23.2 mm | 7 | |
| Sept. 7 |  Patchy rain possible | 26° /18° | 27.4 mm | 6 | |
| Sept. 8 | Sunny | 27° /16° | 1.7 mm | 7 | |
| Sept. 9 |  Patchy light rain with thunder | 26° /16° | 2.4 mm | 6 | |
| Sept. 10 |  Moderate or heavy rain shower | 27° /18° | 5.8 mm | 6 | |
| Sept. 11 | Patchy rain possible | 27° /18° | 0.4 mm | 7 | |
| Sept. 12 | Sunny | 28° /18° | 0 mm | 7 | |
| Sept. 13 | Moderate or heavy rain shower | 26° /18° | 2.5 mm | 6 | |
| Sept. 14 | Sunny | 28° /18° | 0 mm | 7 | |
| Sept. 15 | Sunny | 27° /16° | 0 mm | 7 | |
| Sept. 16 | Sunny | 24° /15° | 3.5 mm | 6 | |
| Sept. 17 |  Moderate rain | 20° /17° | 14.8 mm | 0.4 | |
| Sept. 18 |  Cloudy | 30° /19° | 0 mm | 1.3 | |
| Sept. 19 | Moderate rain | 32° /20° | 7.1 mm | 1.5 | |
| Sept. 20 | Patchy rain possible | 25° /16° | 1.9 mm | 1.5 | |
| Sept. 21 | Patchy rain possible | 22° /18° | 0.2 mm | 0 | |
| Sept. 22 | Patchy rain possible | 25° /19° | 0.1 mm | 5 | |
| Sept. 23 | Sunny | 25° /19° | 0 mm | 6 | |
| Sept. 24 |  Partly cloudy | 25° /20° | 0 mm | 6 | |
| Sept. 25 | Patchy rain possible | 26° /20° | 0.5 mm | 5 | |
| Sept. 26 | Patchy rain possible | 27° /20° | 3.6 mm | 5 | |
| Sept. 27 | Patchy rain possible | 21° /20° | 5 mm | 5 | |
| Sept. 28 | Moderate rain | 24° /21° | 5.6 mm | 5 | |
| Sept. 29 | Patchy rain possible | 22° /20° | 0.7 mm | 5 | |
| Sept. 30 | Moderate rain | 23° /20° | 9.7 mm | 5 | |
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Pasadena in September - FAQ
September rainfall patterns in Pasadena
UV exposure in Pasadena during September
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Where is Pasadena?Get accurate weather forecasts for Pasadena, located at latitude 39.107 and longitude -76.571. Stay updated with localized weather information tailored for Pasadena.