In general the best time to visit Phoenix is probably October, when the weather is usually great. The hottest months are June, July, August, while the coldest months are January, February, December.
The best time to visit may differ depending on what you are looking for:
The best time for a sun tanning holiday is June, July, August. Average maximum temperatures are up to +108°F in July and it has 9 sunny days on average.
In general, it’s pleasant to walk and do outdoor activities during January - December.
If you want to avoid wet weather, then your choice is January, February, December with the lowest chance of rain.
Average weather in Phoenix in different months
This is the average weather in Phoenix for each month based on historic data:
In October the weather is great. There are an average of 18 sunny days in October and the temperature ranges from +64°F to +91°F.
January, February, March, April, June, November, December usually has good weather. Average maximum temperature reaches +106°F during June.
In May, July, August, September the weather is average. Expect around 20 rainy days, and the precipitation amounts to approximately 51 mm in August.
Climate in Phoenix
Here is the detailed breakdown of the climate in Phoenix for each month:
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Maximum Temperature
+86°F
+91°F
+100°F
+106°F
+115°F
+122°F
+122°F
+118°F
+115°F
+109°F
+97°F
+84°F
Average Maximum Temperature
+68°F
+73°F
+81°F
+88°F
+97°F
+106°F
+108°F
+106°F
+102°F
+91°F
+77°F
+68°F
Minimum Temperature
+28°F
+30°F
+36°F
+43°F
+50°F
+61°F
+68°F
+70°F
+59°F
+43°F
+34°F
+27°F
Avg. water temperature
-
-
-
-
-
-
-
-
-
-
-
-
Humidity, %
47
42
36
24
20
17
29
34
32
32
37
48
Rain, mm
33
32
29
9
5
3
37
51
31
21
20
34
Snow, mm
0
0
0
0
0
0
0
0
0
0
0
0
Average wind speed, m/s
1
1
2
2
2
2
2
2
2
1
1
1
Sunny Days
11
10
13
15
18
20
9
8
15
18
15
12
Cloud Days
14
13
13
12
11
8
11
9
8
9
11
13
Rainy Days
6
5
4
2
2
1
6
8
4
3
3
5
Snowy Days
0
0
0
0
0
0
0
0
0
0
0
0
Average Temperature
Here are the average maximum and minimum temperatures in Phoenix during the whole year:
The hottest month in Phoenix is July with average maximum temperature going up to +108°F. The coldest month is January with the lowest temperatures of +45°F.
Humidity
The temperature feels different depending on humidity. Here is how humidity in Phoenix looks throughout the year, in %:
The most humid month in Phoenix is December with average humidity going up to 48%. The least humid month is June with an average humidity of 17%.
Rain
Amount of rainfall in mm. in Phoenix during the whole year based on historical data:
The sunniest and driest month is June with approximately 20 sunny days and a total precipitation of around 3 mm. The rainiest and wettest month is August with approximately 8 rainy days and 51 mm of total precipitation.
FAQ
Frequently asked questions about the weather in Phoenix:
What is the hottest month in Phoenix?
The hottest month in Phoenix is July with average maximum temperature of +108°F.
What is the coldest month in Phoenix?
The coldest month in Phoenix is January with minimum temperatures of +45°F.
Is Phoenix worth visiting in winter?
If you are planning to visit Phoenix in winter you can expect pretty good weather. The best month is July with +108°F and 9 sunny days.
When does it rain the least in Phoenix?
if you're looking to visit Phoenix when it rains the least, you should plan your trip for August, July, December. During this time, rainfall is rare with the driest month being June with only 3 mm of rain.
For this page, we’ve looked at the typical weather in Phoenix, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.