Casa Grande (AZ) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Casa Grande.
Climate overview of Casa Grande
Casa Grande, Arizona, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 40°C (104°F) in June, while winters cool to 18°C (64°F) in January.
Rain/snowfall is extremely rare, with only 176 mm (6.9 in) falling across the entire year. The sunniest month is June, with 13.6 hours of sunshine per day on average.
Casa Grande Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Casa Grande — and find the best time to visit.
Monthly Temperature in Casa Grande
Depending on the time of the year, temperatures range from very hot to pleasant in Casa Grande. Average maximum daytime temperatures range from a very hot 40°C (104°F) in June, the warmest time of the year, to a pleasant 18°C (64°F) during cooler months like January.
At night, you can expect temperatures ranging from 26°C (79°F) in June to around 3°C (37°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Casa Grande
Casa Grande has a dry climate with very low precipitation, averaging 176 mm (6.9 in) of rain/snowfall annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, July it receives low rainfall, averaging 28 mm (1.1 in) of precipitation, recorded across 5 rainy days. In contrast, the driest month June brings less rainfall, with 3.1 mm (0.1 in) over a single rainy day. For more details, please visit our Casa Grande Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Casa Grande
Seasonal changes in sunshine hours are quite dramatic in Casa Grande. While June receives considerable daily sunshine with up to 13.6 hours, December marks the darkest time of the year, where sunshine is scarce with only 8.1 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Casa Grande by Month
The relative humidity is low throughout the year in Casa Grande.
The city experiences its highest humidity in December, reaching 51%. In June, the humidity drops to its lowest level at 19%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Casa Grande
The consistently dry weather means you can step outside without worrying about rain, though remember to carry water and sun protection. Looking for inspiration on where to travel this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
Frequently asked questions about the climate in Casa Grande
What is the best time to visit Casa Grande?
January, February, March, November and December typically offer the most optimal weather in Casa Grande. In contrast, May, June, July, August and September tend to have less optimal conditions. Casa Grande has a distinct dry season from January to December.
What temperatures can I expect in Casa Grande?
Daytime highs range from 18°C (64°F) in January to 40°C (104°F) in June. Nighttime lows range from 3°C (37°F) to 26°C (79°F). Temperatures vary considerably through the year.
How much rain does Casa Grande get?
Annual rainfall is around 176 mm (6.9 in). July is the wettest month with 28 mm (1.1 in), while June is the driest with 3.1 mm (0.1 in).
How sunny is Casa Grande?
Casa Grande receives around 3,867 hours of sunshine per year. June is the sunniest month with 407 hours, while December is the cloudiest with just 244 hours. Overall, Casa Grande enjoys abundant sunshine.
Casa Grande 3-Day Forecast
Casa Grande (AZ) 3-Day Forecast
Casa Grande on the map
Casa Grande is highlighted — select any city to see its climate.
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