Arizona Weather by Month — Temperature & Rainfall Guide

Arizona is a region in the United States of America. Many people wonder what the weather conditions are in Arizona over the year. What is the best time to visit Arizona?

This page shows the average weather conditions by month in Arizona over the year in: January, February, March, April, May, June, July, August, September, October, November, December.

In January the weather in Arizona ranges from mixed in Sedona to excellent in Phoenix. January is a winter month. The temperatures range from low in Kayenta with 6°C (43°F) to pleasant in Yuma with 21°C (70°F).

Find more detailed climate information for Arizona in January here.

In February the weather in Arizona ranges from good in Grand Canyon to excellent in Phoenix. February is a winter month. The temperatures range from low in Greer with 8°C (46°F) to high in Yuma with 24°C (75°F).

Find more detailed climate information for Arizona in February here.

In March the weather in Arizona ranges from very good in Grand Canyon to excellent in Phoenix. The temperatures range from low in Greer with 10°C (50°F) to high in Yuma with 28°C (82°F).

Find more detailed climate information for Arizona in March here.

In April the weather in Arizona is generally excellent. The temperatures range from moderate in Greer with 13°C (55°F) to very high in Gila Bend with 31°C (88°F). These night and day temperatures are an average and some days may be even warmer. So be prepared and bring light clothes.

Find more detailed climate information for Arizona in April here.

In May the weather in Arizona ranges from good in Eloy to excellent in Tucson. The temperatures range from moderate in Greer with 17°C (63°F) to extremely high in Gila Bend with 35°C (95°F). These night and day temperatures are an average and some days may be even warmer. So be prepared and bring light clothes.

Find more detailed climate information for Arizona in May here.

In June the weather in Arizona ranges from mixed in Phoenix to excellent in Bisbee. June is a summer month. The temperatures range from high in Greer with 24°C (75°F) to extremely high in Gila Bend with 42°C (108°F). These night and day temperatures are an average and some days may be even warmer. So be prepared and bring light clothes.

Find more detailed climate information for Arizona in June here.

In July the weather in Arizona ranges from less favorable in Tucson to very good in Grand Canyon. July is a summer month. The temperatures range from high in Greer with 23°C (73°F) to extremely high in Bullhead City with 43°C (109°F). On average, this month is one of the warmest months of the year in Arizona. So be prepared and make sure to dress lightly.

Find more detailed climate information for Arizona in July here.

In August the weather in Arizona ranges from less favorable in Phoenix to very good in Sedona. August is a summer month. The temperatures range from high in Greer with 22°C (72°F) to extremely high in Bullhead City with 42°C (108°F). These night and day temperatures are an average and some days may be even warmer. So be prepared and bring light clothes.

Find more detailed climate information for Arizona in August here.

In September the weather in Arizona ranges from mixed in Phoenix to excellent in Kingman. The temperatures range from pleasant in Greer with 20°C (68°F) to extremely high in Yuma with 39°C (102°F). These night and day temperatures are an average and some days may be even warmer. So be prepared and bring light clothes.

Find more detailed climate information for Arizona in September here.

In October the weather in Arizona is generally excellent. The temperatures range from moderate in Greer with 16°C (61°F) to very high in Gila Bend with 33°C (91°F). These night and day temperatures are an average and some days may be even warmer. So be prepared and bring light clothes.

Find more detailed climate information for Arizona in October here.

In November the weather in Arizona ranges from very good in Grand Canyon to excellent in Phoenix. The temperatures range from low in Greer with 11°C (52°F) to high in Yuma with 27°C (81°F).

Find more detailed climate information for Arizona in November here.

In December the weather in Arizona ranges from less favorable in Grand Canyon to excellent in Phoenix. December is a winter month. The temperatures range from low in Kayenta with 6°C (43°F) to pleasant in Yuma with 20°C (68°F). On average, this month is the coldest month of the year in Arizona.

Find more detailed climate information for Arizona in December here.