The best times to visit Casa Grande for ideal weather are

March 5th to May 13th


October 8th to December 2nd

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Casa Grande Travel Info

Weather in Casa Grande


Average temperatures in Casa Grande 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 Casa Grande, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally late June where highs are regularly around 107.9°F (42.2°C) with temperatures rarely dropping below 77.5°F (25.3°C) at night.

Casa Grande Temperatures (Fahrenheit)


Casa Grande Temperatures (Celsius)


“Feels-Like” Temperatures

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.

Casa Grande Perceived Temperature (F)


Casa Grande Perceived Temperature (C)



Average Casa Grande 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.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 66 51.5 39.1
Feb 69.8 54.6 41
Mar 78.9 62.7 46.5
Apr 85.9 69.6 52.7
May 93.5 78.1 60.7
Jun 104.2 88.8 70.4
Jul 104.5 91.6 79.4
Aug 103.9 90.8 78.7
Sep 98.6 84.9 72.2
Oct 88 72.7 58.4
Nov 76 60.7 47.4
Dec 63.9 50.5 39.6

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 18.9 10.8 3.9
Feb 21 12.6 5
Mar 26.1 17.1 8.1
Apr 29.9 20.9 11.5
May 34.2 25.6 15.9
Jun 40.1 31.6 21.3
Jul 40.3 33.1 26.3
Aug 39.9 32.7 25.9
Sep 37 29.4 22.3
Oct 31.1 22.6 14.7
Nov 24.4 15.9 8.6
Dec 17.7 10.3 4.2



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Casa Grande are May, April, and then June. 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 January. For example, on the week of January 8th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid September with an average of 1 days of significant precipitation the week of September 10th.

When can you find snow in Casa Grande? 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 Casa Grande.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Casa Grande (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 3% 0 0.4
Feb 5% 0 0.3
Mar 3% 0 0.4
Apr 1% 0 0.1
May 1% 0 0.2
Jun 1% 0 0.4
Jul 5% 0 1.3
Aug 6% 0 0.8
Sep 6% 0 4.1
Oct 1% 0 0.1
Nov 2% 0 0.3
Dec 4% 0 0.6

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 3 0 1
Feb 5 0 0.8
Mar 3 0 1
Apr 1 0 0.3
May 1 0 0.5
Jun 1 0 1
Jul 5 0 3.3
Aug 6 0 2
Sep 6 0 10.4
Oct 1 0 0.3
Nov 2 0 0.8
Dec 4 0 1.5


Humidity and Wind

Casa Grande has some months with regular humidity, with some very dry months. The least humid month is June (10.2% relative humidity), and the most humid month is December (39.3%).

Wind in Casa Grande is usually calm. The windiest month is May, followed by April and July. May’s average wind speed of around 5.5 knots (6.4 MPH or 10.3 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid July where average top sustained speeds reach 17.3 knots, which is considered a fresh breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Casa Grande.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

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 4 Light breeze 11 Significant breeze
Feb 3.5 Barely noticeable 10.9 Gentle breeze
Mar 4.3 Light breeze 12.6 Significant breeze
Apr 5.3 Light breeze 14.5 Significant breeze
May 5.5 Light breeze 14.8 Significant breeze
Jun 4.6 Light breeze 14 Significant breeze
Jul 5.1 Light breeze 16.3 Significant breeze
Aug 4.2 Light breeze 14.5 Significant breeze
Sep 4.3 Light breeze 13.3 Significant breeze
Oct 3.5 Barely noticeable 11.5 Significant breeze
Nov 3.5 Barely noticeable 11.4 Significant breeze
Dec 3.2 Barely noticeable 10.6 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 31.5%
Feb 31%
Mar 19.5%
Apr 12.8%
May 11.6%
Jun 10.2%
Jul 24.2%
Aug 25.5%
Sep 25.1%
Oct 21.2%
Nov 23.5%
Dec 39.3%


Is it Safe to Travel to Casa Grande?

Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Dec 04, 2023.


The Busiest and Least Crowded Months

The busiest month for tourism in Casa Grande, AZ, US 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 Casa Grande 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

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is slightly extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 53.1 in May means 53.1% of the tourists vs. March.



Overall Casa Grande Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel warm. Highs range from 99.8°F (37.7°C) and 73.2°F (22.9°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 extremely hot. These months see moderate precipitation with 0 to 2 days of precipitation per month. June – August is fairly slow season for tourism in Casa Grande, so lodging and other accommodations may cost slightly less.

Fall (September through November)

Fall daily highs range from 100.2°F (37.9°C) and 70°F (21.1°C), which will feel very nice given the humidity and wind. It rains or snows a normal amount: 0 to 2 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 too cold this time of year in Casa Grande to be enjoyable for warm weather travelers. The average high during this season is between 73.2°F (22.9°C) and 60.9°F (16.1°C). On average, it rains or snows a smalll amount: consistently 1 times per month. These times of year are the busiest with tourists.


Best Times to Travelthe United States › Casa Grande, AZ, US