Frederick (MD)
September
Weather in Frederick, Maryland for September 2027
Your guide to Frederick weather in September - trends and predictions
In general, the average temperature in Frederick at the beginning of September is 27.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.9 °C by the end of September.
Frederick experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 147.8 mm.
Is September a good time to visit Frederick? check out the best time to travel to Frederick page.
✨ Is September a good time to visit Frederick? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
20
Dry days
10
Rainy days
0
Snow days
25°/15°
Temperatures
16 km/h
Avg max wind
75 %
Avg humidity
Frederick Weather September
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Temperatures trend during September in Frederick
See the weather trend as well as the moving average line
September weather in Frederick day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Light rain shower | 29° /17° | 1.2 mm | 7 | |
| Sept. 2 |  Light rain | 27° /16° | 6.9 mm | 5 | |
| Sept. 3 |  Sunny | 28° /14° | 0 mm | 6 | |
| Sept. 4 |  Heavy rain | 29° /16° | 25.9 mm | 4 | |
| Sept. 5 | Light rain | 28° /16° | 2.9 mm | 6 | |
| Sept. 6 | Light rain | 28° /15° | 2.5 mm | 7 | |
| Sept. 7 | Patchy light drizzle | 24° /13° | 0.2 mm | 6 | |
| Sept. 8 | Sunny | 24° /9° | 0 mm | 6 | |
| Sept. 9 | Sunny | 27° /11° | 0 mm | 6 | |
| Sept. 10 | Sunny | 27° /13° | 0.5 mm | 5 | |
| Sept. 11 | Patchy rain possible | 27° /15° | 2.3 mm | 5 | |
| Sept. 12 | Sunny | 26° /15° | 0.1 mm | 6 | |
| Sept. 13 | Patchy rain possible | 28° /16° | 1.4 mm | 5 | |
| Sept. 14 |  Mist | 27° /16° | 0 mm | 6 | |
| Sept. 15 | Patchy rain possible | 27° /13° | 1.9 mm | 7 | |
| Sept. 16 | Patchy rain possible | 25° /13° | 1.4 mm | 6 | |
| Sept. 17 |  Overcast | 22° /16° | 0.6 mm | 4 | |
| Sept. 18 | Fog | 25° /18° | 0.9 mm | 5 | |
| Sept. 19 | Overcast | 26° /14° | 0.7 mm | 6 | |
| Sept. 20 | Light rain | 23° /16° | 3.5 mm | 4 | |
| Sept. 21 |  Moderate rain | 21° /16° | 11.5 mm | 4 | |
| Sept. 22 | Moderate rain | 20° /13° | 12.7 mm | 4 | |
| Sept. 23 | Patchy rain possible | 23° /15° | 1.1 mm | 4 | |
| Sept. 24 | Heavy rain | 20° /14° | 28.4 mm | 4 | |
| Sept. 25 | Moderate rain | 23° /14° | 16.8 mm | 5 | |
| Sept. 26 | Patchy rain possible | 24° /17° | 2 mm | 6 | |
| Sept. 27 | Moderate rain | 21° /16° | 14 mm | 4 | |
| Sept. 28 | Light rain | 21° /16° | 8.2 mm | 3 | |
| Sept. 29 | Fog | 23° /16° | 0.3 mm | 4 | |
| Sept. 30 | Overcast | 22° /15° | 0 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for Frederick 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 Frederick forecast closer to your planned date for the most up-to-date weather information.
Change Month
Frederick in September - FAQ
What are the expected maximum and minimum temperatures in Frederick during September?
During September, expect a variety of temperatures with highs around 25° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Frederick during September?
Significant rainfall exceeding 147.8 mm is expected in Frederick during September, occurring over more than 10 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Frederick during September?
The average wind speed in Frederick during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Frederick
Explore the daily rainfall trends and prepare for Fredericks September weather 💧
Typically, Frederick has 10 rainy days in September with a total of 147.8 mm of rainfall.
UV exposure in Frederick during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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