Casa Grande Weather in September

September in Casa Grande averages 37°C (99°F) during the day and 21°C (70°F) at night. With only 14 mm (0.6 in) of rainfall expected on average, it's a largely dry month.

Rainfall in Casa Grande in September

Historically, September sees about 4 days of rain, with a monthly average of 14 mm (0.6 in). The odd shower may pass through, but it usually doesn't amount to much. A largely dry month overall.

Temperature in Casa Grande in September

Daytime temperatures in Casa Grande reach 37°C (99°F) in September, dropping to 21°C (70°F) at night. Mornings and evenings are often more comfortable than the peak afternoon hours. Nights remain mild at 21°C (70°F), making evenings a pleasant time to be outdoors.

Sunshine in Casa Grande in September

Expect sunny days throughout the month, with an estimated 328 hours of sunshine. This makes it a pleasant time to visit Casa Grande.

September in Casa Grande has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.

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• January
• February
• March
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• May
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• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Casa Grande's climate page.

Casa Grande Temperature in September

Min Temperature 21°C (70°F)  

Max Temperature 37°C (99°F)  

Chance of Rain 13%  

Precipitation 14 mm (0.6 in)  

Rainy days 4 days  

Humidity 35% *  

Sunshine 328 hours *  

Percentage Sunshine 89% *  

* Data from: Phoenix, the United States of America (69 KM, 43 Miles).

What to Wear in Casa Grande in September

Get ready for hot weather in September! Lightweight, breathable fabrics are your best friend during this month. Cotton and linen shirts, shorts, sundresses, and sandals will keep you comfortable. Light colors help reflect the heat, avoid wearing black. Almost no rain is expected, so no need to bring rain gear. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Casa Grande in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

10/10

Camping

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Casa Grande's climate page.

More climate data for Casa Grande

Temperature Rainfall Sunshine Humidity

See the full Casa Grande climate overview or explore weather in the United States of America.