Phoenix Temperatures in September: What to Expect
Phoenix, Arizona, is known for its hot climate, and September is generally still quite warm. Expect average high temperatures in the low 100s Fahrenheit (around 38 degrees Celsius) during the day, gradually cooling down towards the end of the month.
Typical September Weather Patterns in Phoenix
September in Phoenix marks a transition from the intense heat of summer towards slightly milder conditions. While still hot, the temperatures are typically lower than July and August. Early September can still see highs pushing 110°F (43°C), but by late September, the highs are more commonly in the mid-90s °F (around 35°C).
Average High and Low Temperatures
The average high temperature in Phoenix during September is around 100°F (38°C). The average low temperature drops to the low 70s °F (around 22°C). This diurnal range means that while the days are still hot, the evenings offer some relief.
Rainfall and Humidity
September is generally a dry month in Phoenix. Rainfall is infrequent, with an average of less than an inch for the entire month. Humidity is typically low, contributing to the dry heat that characterizes the Phoenix climate.
Sunlight Hours
Phoenix enjoys plenty of sunshine in September, with an average of over 10 hours of sunshine per day. The days are still long, providing ample opportunities for outdoor activities, especially in the cooler morning and evening hours.
Factors Influencing September Temperatures
Several factors contribute to the temperature patterns observed in Phoenix during September:
- Solar Radiation: High levels of solar radiation continue to impact the region, especially in early September.
- Monsoon Season: While the monsoon season typically begins in late June and ends in September, its influence on temperatures and humidity diminishes throughout the month.
- Elevation and Geography: Phoenix’s low elevation and desert environment contribute to its high temperatures and low humidity. Check out the Phoenix, Arizona entry on Wikipedia for a comprehensive overview of the city’s geography and climate.
Tips for Staying Comfortable in September
If you’re visiting Phoenix in September, it’s crucial to take precautions to stay comfortable and safe:
- Stay Hydrated: Drink plenty of water throughout the day.
- Seek Shade: Limit your exposure to direct sunlight, especially during peak hours (10 AM – 4 PM).
- Wear Light Clothing: Choose loose-fitting, light-colored clothing made of breathable fabrics.
- Plan Activities Wisely: Schedule outdoor activities for the early morning or late evening when temperatures are cooler.
Frequently Asked Questions
What is the hottest temperature ever recorded in Phoenix in September?
While specific records vary, the hottest temperatures in September in Phoenix can exceed 110°F (43°C).
Is September a good time to visit Phoenix?
September can be a good time to visit Phoenix if you enjoy warm weather and don’t mind the heat. However, be prepared for high temperatures and plan your activities accordingly.
Does it cool down at night in Phoenix in September?
Yes, the temperatures in Phoenix typically drop in the evening, providing some relief from the daytime heat. Expect lows in the low 70s °F (around 22°C).
Is September part of monsoon season in Phoenix?
September marks the end of the monsoon season. While there might be occasional storms early in the month, rainfall is generally infrequent.
What should I pack for a trip to Phoenix in September?
Pack light, breathable clothing, sunscreen, a hat, sunglasses, and plenty of water. Comfortable walking shoes are also recommended.
Summary
Phoenix in September is still hot, with average high temperatures around 100°F (38°C). While the heat is less intense than the peak summer months, it’s important to take precautions to stay hydrated and comfortable. By late September, temperatures begin to moderate, making it a more pleasant time to visit if you enjoy warm weather.
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