The best times to visit Southern Arizona for ideal weather are
February 12th to May 13th
October 8th to December 9th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Southern Arizona Travel Guide
Other Southern Arizona Travel Info
Weather in Southern Arizona
Average temperatures in Southern Arizona vary drastically. Considering humidity, temperatures feel very nice much of the year, but hot in the summer and cold in the winter with a very low chance of rain or snow throughout the year. The area is somewhat temperate — in the 49th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Southern Arizona, the hottest months are June, July, and then August. See average monthly temperatures below. The warmest time of year is generally late June where highs are regularly around 103.3°F (39.6°C) with temperatures rarely dropping below 77°F (25°C) at night.
Southern Arizona Temperatures (Fahrenheit)
Southern Arizona Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Southern Arizona Perceived Temperature (F)
Southern Arizona Perceived Temperature (C)
Average Southern Arizona Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Southern Arizona are May, June, and then April. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid March. For example, on the week of March 12th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early July with an average of 2 days of significant precipitation the week of July 2nd.
When can you find snow in Southern Arizona? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Southern Arizona.
Snow on the Ground
The graph below shows the average snow on the ground in Southern Arizona (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Southern Arizona has no months that would be considered humid, with some extremely dry months. The least humid month is June (8.2% relative humidity), and the most humid month is December (35%).
Wind in Southern Arizona is usually calm. The windiest month is May, followed by April and June. May’s average wind speed of around 7.7 knots (8.9 MPH or 14.2 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid April where average top sustained speeds reach 15.8 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Southern Arizona.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||5.8||Light breeze||11.9||Significant breeze|
|Feb||5.7||Light breeze||12.5||Significant breeze|
|Mar||6.6||Light breeze||14.1||Significant breeze|
|Apr||7.6||Gentle breeze||15.1||Significant breeze|
|May||7.7||Gentle breeze||15.2||Significant breeze|
|Jun||7.1||Gentle breeze||14.4||Significant breeze|
|Jul||6||Light breeze||13.7||Significant breeze|
|Aug||5.3||Light breeze||12.6||Significant breeze|
|Sep||5.6||Light breeze||12.2||Significant breeze|
|Oct||5.9||Light breeze||12||Significant breeze|
|Nov||6||Light breeze||11.9||Significant breeze|
|Dec||5.6||Light breeze||11.4||Significant breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Southern Arizona?
Our best data indicates this area is somewhat safe, but with extra warnings in a few regions. As of Oct 07, 2019 there are travel warnings and regional advisories for Mexico; exercise a high degree of caution and avoid some areas. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Oct 01, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Southern Arizona, Mexico is March, followed by January and February. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Southern Arizona in May. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Southern Arizona Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 98.2°F (36.8°C) and 72.9°F (22.7°C) with warmer temperatures in the later months. Rain is extremely rare with 0 to 1 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.
Summer (June through August)
The middle-year months have hot weather with high temperatures that are quite warm. These months see the most precipitation with 0 to 5 days of precipitation per month. June – August is fairly slow season for tourism in Southern Arizona, so lodging and other accommodations may cost slightly less.
Fall (September through November)
Fall daily highs range from 94.9°F (34.9°C) and 69.3°F (20.7°C), which will feel very nice given the humidity and wind. It rains or snows a normal amount: 1 to 3 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.
Winter (December through February)
Weather is somewhat cool this time of year in Southern Arizona to be enjoyable for warm weather travelers. The average high during this season is between 72.9°F (22.7°C) and 61.3°F (16.3°C). On average, it rains or snows a smalll amount: 1 to 3 times per month. These times of year are the busiest with tourists.