United States (New York City)
September
Weather in the United States for September 2027
Your guide to the United States weather in September - trends and predictions
In general, the average temperature in the United States at the beginning of September is 27 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.1 °F by the end of September.
United States experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 198.2 mm.
Is September a good time to visit the United States? check out the best time to travel to the United States page.
✨ Is September a good time to visit the United States? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
21
Dry days
9
Rainy days
0
Snow days
25°/17°
Temperatures
18 km/h
Avg max wind
65 %
Avg humidity
United States Weather September
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What’s the Weather Like in United States This September?
Discover the average temperatures and weather trends across United States’s cities this September.
Temperatures trend during September in the United States
See the weather trend as well as the moving average line
September weather in the United States day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Heavy rain | 28° /19° | 29.4 mm | 6 | |
| Sept. 2 |  Light rain | 26° /17° | 4.7 mm | 6 | |
| Sept. 3 |  Partly cloudy | 27° /17° | 0.6 mm | 6 | |
| Sept. 4 |  Sunny | 28° /19° | 0.5 mm | 7 | |
| Sept. 5 |  Patchy rain possible | 27° /20° | 7.4 mm | 7 | |
| Sept. 6 |  Moderate rain | 28° /20° | 16.9 mm | 7 | |
| Sept. 7 | Moderate rain | 25° /17° | 14.8 mm | 6 | |
| Sept. 8 | Patchy rain possible | 27° /17° | 1 mm | 6 | |
| Sept. 9 |  Moderate or heavy rain shower | 27° /18° | 4 mm | 5 | |
| Sept. 10 | Patchy rain possible | 27° /18° | 1 mm | 6 | |
| Sept. 11 | Light rain | 26° /18° | 2.8 mm | 6 | |
| Sept. 12 | Patchy rain possible | 27° /18° | 1 mm | 7 | |
| Sept. 13 | Moderate rain | 26° /19° | 20.4 mm | 6 | |
| Sept. 14 |  Overcast | 26° /18° | 0 mm | 6 | |
| Sept. 15 | Patchy rain possible | 25° /17° | 1 mm | 6 | |
| Sept. 16 | Overcast | 25° /16° | 0.2 mm | 6 | |
| Sept. 17 | Overcast | 24° /18° | 0.3 mm | 6 | |
| Sept. 18 | Light rain | 26° /19° | 4.8 mm | 6 | |
| Sept. 19 | Light rain | 26° /18° | 2.5 mm | 6 | |
| Sept. 20 | Patchy rain possible | 23° /17° | 2.1 mm | 5 | |
| Sept. 21 | Overcast | 23° /16° | 0.4 mm | 5 | |
| Sept. 22 | Patchy rain possible | 22° /16° | 2.5 mm | 5 | |
| Sept. 23 | Moderate rain | 21° /15° | 10.5 mm | 4 | |
| Sept. 24 | Light rain | 21° /14° | 4.2 mm | 5 | |
| Sept. 25 | Moderate rain | 22° /15° | 16.2 mm | 4 | |
| Sept. 26 | Moderate rain | 22° /16° | 12.4 mm | 5 | |
| Sept. 27 | Moderate rain | 22° /15° | 12.5 mm | 5 | |
| Sept. 28 | Moderate rain | 21° /15° | 12.8 mm | 5 | |
| Sept. 29 | Light rain | 20° /14° | 8.1 mm | 5 | |
| Sept. 30 | Light rain | 20° /15° | 3.2 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for the United States 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 United States forecast closer to your planned date for the most up-to-date weather information.
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United States in September - FAQ
What are the expected maximum and minimum temperatures in United States during September?
During September, expect a variety of temperatures with highs around 25° and lows near 17°, suitable for diverse activities and preferences.
How much rainfall should be expected in United States during September?
Significant rainfall exceeding 198.2 mm is expected in United States during September, occurring over more than 9 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in United States during September?
The average wind speed in United States during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in the United States
Explore the daily rainfall trends and prepare for United Statess September weather 💧
Typically, United States has 9 rainy days in September with a total of 198.2 mm of rainfall.
UV exposure in the United States during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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