The city of Tempe, Arizona, located in the heart of the desert, experiences a diverse range of weather conditions throughout the year.
The hot season in Tempe, lasting from May 28 to September 19, sees average daily high temperatures soaring above 98°F. July peaks at an average high of 106°F, with lows of 84°F. This intense heat defines the summer weather in Tempe, making it essential for residents and visitors to stay hydrated and protected from the sun.
In contrast, the cool season in Tempe runs from November 20 to February 26, where temperatures become more moderate.
During this period, the average daily high temperature drops below 73°F, making the weather more pleasant for outdoor activities. December, noted as the coldest month, records average highs of 62.8°F and lows of 47.3°F, offering a mild winter experience compared to other regions.
Tempe enjoys over 300 days of sunshine annually, creating a bright and inviting atmosphere for its residents.
Whether exploring the local parks or attending events at Arizona State University, the consistent sunny climate provides many opportunities for outdoor enjoyment.
For a detailed look at the city’s climate and weather patterns, you can view the climate and average weather year round information.
Average Temperature in Tempe, Arizona
Tempe, Arizona experiences hot summers and mild winters.
During the summer months, daily high temperatures often exceed 98°F. The hottest month is July, where the high averages around 106°F.
In contrast, the cooler season spans from November to February.
During this time, the average high temperatures range from 62°F to 72°F. December is typically the coldest month, with average lows around 47°F.
Throughout the year, Tempe enjoys a predominantly arid and dry climate.
Monthly Average High and Low Temperatures
| Month | Average High (°F) | Average Low (°F) |
|---|---|---|
| January | 67 | 46 |
| February | 71 | 49 |
| March | 77 | 54 |
| April | 85 | 60 |
| May | 94 | 68 |
| June | 104 | 76 |
| July | 106 | 84 |
| August | 104 | 83 |
| September | 99 | 76 |
| October | 88 | 64 |
| November | 75 | 53 |
| December | 67 | 47 |
Additional Climate Information
The hot season in Tempe, spanning around 3.7 months, makes it one of the hotter places in the state.
On the flip side, the cool season lasts for about 3.2 months. Overall, the temperatures remain relatively high throughout the year.
For more detailed temperature statistics, visitors can check out articles related to temperature.
Tempe’s average annual temperature is approximately 73.6°F, making it a warm and inviting place for those who enjoy sunny weather.
Average Precipitation in Tempe, Arizona
Tempe, Arizona experiences very little precipitation throughout the year. The city is known for its arid desert climate, which includes minimal rainfall and almost no snowfall.
Average Rainfall in Tempe, Arizona
The average annual rainfall in Tempe is quite low, typical of desert regions. It receives about 9 inches of rain per year.
Most of the rain falls during the monsoon season from July to September. During this period, heavy rains and thunderstorms are common.
July is the wettest month, with average rainfall reaching around 1 inch.
There are a few rainy days spread across the year, mostly concentrated in the monsoon season. Even during these months, rain is sporadic, meaning it comes in short bursts, sometimes leading to flash floods.
The driest month in Tempe is typically May, receiving almost no rain. This lack of consistent rainfall underscores the city’s classification as a desert climate.
Average Snow in Tempe, Arizona
Snow is virtually nonexistent in Tempe. The desert climate ensures that winters are mild, with temperatures rarely dropping low enough to support snowfall.
On very rare occasions, a light dusting might occur, but it usually melts quickly due to the warm ground temperatures.
Residents and visitors do not expect to see snow in the city. If snow is desired, it requires travelling to higher elevations in Arizona where snow and ice are more common.
Average Sun in Tempe, Arizona
Tempe enjoys a significant amount of sunlight throughout the year. This section covers the average daily shortwave solar energy received, giving insights into daylight hours and cloud cover patterns.
Average Daily Shortwave Solar Energy in Tempe, Arizona
Tempe receives high levels of shortwave solar energy, especially during summer. The longest days occur in June, with about 14 hours of daylight.
During this month, skies are mostly clear, enhancing sun exposure.
In July, the UV index reaches its peak, making sun protection necessary.
On average, July experiences the highest daily shortwave solar energy of around 7.6 kWh, contributing to its long sunny days and high temperatures.
In contrast, December has the shortest days, with about 10 hours of daylight.
The daily shortwave solar energy is significantly lower, averaging about 3.3 kWh. Despite fewer daylight hours, clear skies still prevail frequently during winter.
Average Humidity in Tempe, Arizona
Tempe, Arizona, experiences a desert climate, which is characterized by low humidity throughout the year. The average relative humidity in Tempe hovers around 43% annually.
Humidity levels tend to be higher in the morning and lower in the afternoon due to the increase in temperature.
To give a better understanding of how humidity varies throughout the year, here’s a quick overview:
| Month | Average Morning Humidity | Average Afternoon Humidity |
|---|---|---|
| January | 55% | 30% |
| April | 35% | 15% |
| July | 45% | 25% |
| October | 40% | 20% |
The dew point in Tempe also reflects the arid conditions.
For much of the year, the dew point remains low, often below 50°F. During the hottest months, like July and August, the dew point can rise slightly due to increased moisture in the air, typically reaching around 60°F.
Tempe’s humidity is significantly impacted by its desert surroundings, resulting in dry air conditions that are consistent throughout the seasons. This lack of moisture is a defining feature of the climate in this region.
Average Wind in Tempe, Arizona
Tempe, Arizona experiences varying wind speeds throughout the year. The average wind speed is generally moderate, making the area comfortable for most outdoor activities.
The windiest month in Tempe is typically April. During this month, residents can expect average wind speeds reaching up to 10 mph.
In contrast, the calmest month of the year is August, with wind speeds averaging around 5 mph.
Wind patterns in Tempe are influenced by the surrounding geography. The city is located in a valley, which can impact how wind flows through the area.
Monthly Average Wind Speed
| Month | Average Wind Speed (mph) |
|---|---|
| January | 7 |
| February | 7 |
| March | 8 |
| April | 10 |
| May | 9 |
| June | 8 |
| July | 6 |
| August | 5 |
| September | 6 |
| October | 7 |
| November | 8 |
| December | 7 |
Average Air Quality in Tempe, Arizona
The average air quality in Tempe, Arizona is generally good. The Air Quality Index (AQI) often reads well within the “Good” category, which ranges from 0 to 50.
Factors Contributing to Air Quality:
- Proximity to Phoenix Sky Harbor International Airport: Located about six miles from Tempe, the airport can impact air quality due to emissions from planes and vehicles.
- Weather Patterns: Wind and precipitation levels, recorded over the years, also play a role in dispersing pollutants.
Typical Pollutants:
- PM2.5 and PM10: These particles are commonly measured and can originate from various sources including traffic, industry, and natural events like dust storms.
- Ozone: This can be higher during the hotter months due to higher temperatures and sunlight.
Historical Trends:
Based on historical weather data, air quality levels can fluctuate slightly throughout the year. Monitoring these trends helps residents plan their activities and health precautions.
Real-Time Tracking:
For those looking to keep track of air quality levels, real-time data and forecasts are available through platforms like IQAir. This can be particularly useful on days with expected higher pollution levels.
Topography of Tempe, Arizona
Tempe, Arizona is situated in the Salt River Valley, often referred to as the “Valley of the Sun.” This location grants it a flat and arid landscape, typical of a desert environment.
The city lies at an elevation of approximately 1,200 feet above sea level. The surrounding area is predominantly characterized by its desert plains and rugged mountains.
One notable feature is Papago Park, which boasts unique sandstone formations. These formations create striking red rock outcrops that add to the visual appeal of the area.
Tempe is bordered by the Salt River to the north, which contributes to some variations in surface movement. The river is dammed to form Tempe Town Lake, a popular recreational spot.
Despite the arid conditions, the city is classified under the BWh category of the Köppen climate classification. This indicates a hot desert climate with minimal precipitation.
The soil composition in the area consists mainly of sandy and rocky soils, which influence its vegetation. The topography supports desert flora like cacti, creosote bushes, and mesquite trees.
Finally, Tempe’s urban development has adjusted to this topography with low-density structures and plenty of open spaces to accommodate the natural landscape.
Wildfires can occur due to the dry conditions, and fire management is a crucial aspect of maintaining safety in the region.
Table
| Feature | Description |
|---|---|
| Elevation | ~1,200 feet above sea level |
| Prominent Park | Papago Park |
| Water Body | Salt River / Tempe Town Lake |
| Climate Type | BWh (Hot Desert Climate) |
| Common Vegetation | Cacti, Creosote Bushes, Mesquite Trees |
This terrain makes Tempe a distinctive area within the Arizona landscape, providing both challenges and opportunities for its residents.
Extreme Weather Events that Occur in Tempe, Arizona
In Tempe, Arizona, extreme weather events are on the rise. As the climate changes, these events are becoming more frequent and severe.
Heatwaves are common in Tempe. The hottest month is July, with an average high of 106°F. By 2050, there could be an average of 47 days each year where temperatures exceed 109.9°F.
Wildfires pose a significant threat, often fueled by extended periods of dry, hot weather. These fires can cause damage to homes and natural areas.
Flooding events occur, especially during the monsoon season from June to September. Heavy rains can lead to flash flooding, impacting roads and homes.
Tempe is also affected by droughts. The region experiences long dry spells, which can impact water resources and agriculture.
Notable Statistics
- Average Rainfall: 9.2 inches per year
- Hottest Month: July (106°F average high)
- Monsoon Season: June to September
Extreme temperatures have been breaking records. Phoenix, which is nearby, recorded 31 consecutive days above 110°F from June 30 to July 30, 2024 (source).
Best Time of the Year to Visit Tempe, Arizona
Tempe, Arizona offers unique experiences in each season. From mild springs to hot summers, and from warm falls to cool winters, every time of year has its own highlights and weather conditions.
What Is Tempe, Arizona Like in Spring
Spring in Tempe is comfortable and pleasant. March and April see average high temperatures ranging from 71°F to 84°F. This period has mild weather perfect for outdoor activities.
Rainfall is minimal, averaging less than an inch per month. This makes it easy for visitors to plan activities without worrying about sudden showers. The city also experiences increasing daylight hours, providing more time to explore local sights.
Outdoor events, festivals, and blooming desert flora make this a vibrant season to visit. For those looking to hike or enjoy the outdoors, spring offers the ideal conditions.
What Is Tempe, Arizona Like in Summer
Summer in Tempe is extremely hot. From June to August, daily high temperatures often exceed 100°F. July is the hottest month, with average highs around 106°F 46°C.
Despite the heat, this season has the most daylight, with long sunny days. This time of year is less popular with tourists due to the high temperatures, which may make it easier to find accommodations.
Activities like swimming, indoor attractions, or evening events can be enjoyed during the summer. Water parks and indoor locations become popular spots for both locals and visitors.
What Is Tempe, Arizona Like in Fall
Fall sees a return to milder weather. September to November has average daily highs ranging from 94°F in September to 73°F in November.
Rainfall remains low, similar to spring. Outdoor activities are again favorable, making it a second peak season for tourism. Festivals and events are common, celebrating the cooler temperatures.
Hiking, walking tours, and outdoor dining become enjoyable as the temperatures drop. Many choose to visit in fall to take advantage of the pleasant conditions without the crowds of spring.
What Is Tempe, Arizona Like in Winter
Winter in Tempe is cool but generally mild. December to February, the coolest months, have high temperatures between 62°F and 70°F.
Nights can dip into the mid-40s°F.
This season is the coldest and sees less tourism than spring or fall. However, visitors can still enjoy outdoor activities without the extreme heat of summer.
Rainfall is slightly higher but still averages only about an inch per month.
Many find the winter months perfect for exploring cultural and historical sites, hiking in cooler conditions, and enjoying festive events.
Tempe’s winter weather offers a pleasant escape, especially for those from colder regions looking for a milder climate.