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Weather in Anne Arundel County, Maryland for September 2025

Your guide to Anne Arundel County weather in September - trends and predictions

    Official Weather Alert ⚠️

  • Coastal Flood Advisory - See hour by hour.

    • Temperatures

  • Until now, September 2025 in Anne Arundel County is slightly cooler than the historical average by -1.8 °F.

  • Expect cooler weather in the next days in Anne Arundel County with the forecast suggesting a temperature of 24.8 °F, lower than the historical average.

  • In general, the average temperature in Anne Arundel County 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.

    • Rain 🌧️

  • Anne Arundel County in September brings notable rainfall, with an average of 17 rainy days and a total precipitation of 223.7 mm.

    • More

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

Average dry days
13
Dry days
Average rainy days
17
Rainy days
Average snowy days
0
Snow days
Average temperatures
25°/18°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
71 %
Avg humidity

Anne Arundel County Weather September

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

Temperatures trend during September in Anne Arundel County

See the weather trend as well as the moving average line

September weather in Anne Arundel County day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Sunny
Sunny
 27° /18° 1.7 mm 6
Sept. 2 Sunny
Sunny
 27° /18° 0 mm 6
Sept. 3 Sunny
Sunny
 27° /17° 0 mm 7
Sept. 4 Thundery outbreaks possible
Thundery outbreaks possible
 30° /19° 3 mm 7
Sept. 5 Sunny
Sunny
 31° /20° 5.4 mm 8
Sept. 6 Sunny
Sunny
 31° /21° 23.2 mm 7
Sept. 7 Patchy rain possible
Patchy rain possible
 26° /18° 27.4 mm 6
Sept. 8 Sunny
Sunny
 27° /16° 1.7 mm 7
Sept. 9 Patchy light rain with thunder
Patchy light rain with thunder
 26° /16° 2.4 mm 6
Sept. 10 Moderate or heavy rain shower
Moderate or heavy rain shower
 27° /18° 5.8 mm 6
Sept. 11 Patchy rain possible
Patchy rain possible
 27° /18° 0.4 mm 7
Sept. 12 Sunny
Sunny
 28° /18° 0 mm 7
Sept. 13 Moderate or heavy rain shower
Moderate or heavy rain shower
 26° /18° 2.5 mm 6
Sept. 14 Sunny
Sunny
 28° /18° 0 mm 7
Sept. 15 Sunny
Sunny
 27° /16° 0 mm 7
Sept. 16 Sunny
Sunny
 24° /15° 3.5 mm 6
Sept. 17 Moderate rain
Moderate rain
 20° /17° 14.8 mm 0.4
Sept. 18 Cloudy
Cloudy
 30° /19° 0 mm 1.3
Sept. 19 Moderate rain
Moderate rain
 32° /20° 7.1 mm 1.5
Sept. 20 Patchy rain possible
Patchy rain possible
 25° /16° 1.9 mm 1.5
Sept. 21 Patchy rain possible
Patchy rain possible
 22° /18° 0.2 mm 0
Sept. 22 Patchy rain possible
Patchy rain possible
 25° /19° 0.1 mm 5
Sept. 23 Sunny
Sunny
 25° /19° 0 mm 6
Sept. 24 Partly cloudy
Partly cloudy
 25° /20° 0 mm 6
Sept. 25 Patchy rain possible
Patchy rain possible
 26° /20° 0.5 mm 5
Sept. 26 Patchy rain possible
Patchy rain possible
 27° /20° 3.6 mm 5
Sept. 27 Patchy rain possible
Patchy rain possible
 21° /20° 5 mm 5
Sept. 28 Moderate rain
Moderate rain
 24° /21° 5.6 mm 5
Sept. 29 Patchy rain possible
Patchy rain possible
 22° /20° 0.7 mm 5
Sept. 30 Moderate rain
Moderate rain
 23° /20° 9.7 mm 5
Next
Important Notice
Our weather forecast for Anne Arundel County 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 Anne Arundel County forecast closer to your planned date for the most up-to-date weather information.
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Anne Arundel County in September - FAQ

What are the expected maximum and minimum temperatures in Anne Arundel County during September?
During September, expect a variety of temperatures with highs around 25° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in Anne Arundel County during September?
Significant rainfall exceeding 223.7 mm is expected in Anne Arundel County during September, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Anne Arundel County during September?
The average wind speed in Anne Arundel County during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Anne Arundel County

Explore the daily rainfall trends and prepare for Anne Arundel Countys September weather 💧

UV exposure in Anne Arundel County during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Pasadena
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Location coordinates Where is Anne Arundel County?

Get accurate weather forecasts for Anne Arundel County, located at latitude 39.107 and longitude -76.571. Stay updated with localized weather information tailored for Anne Arundel County.

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