May weather forecastCasa Grande, AZ
May
Weather in May
Casa Grande gets a taste of summer in May, with noticeable elevations in temperatures and a generous increase in sunshine hours. The atmospheric pressure drops further to 29.84in, while the daylight hours stretch to nearly 14 hours. As the warmer conditions settle in, weather patterns get more pronounced with lessening rainfall, signifying the commencement of the dry season. The month witnesses a striking ascent in peak temperatures, touching an impressive 90.7°F (32.6°C). However, the coming months of June through August will assert true summer dominance with the mercury further climbing on the temperature charts.Temperature
Casa Grande experiences a minor temperature shift with the start of May, with average high-temperatures moving from a moderately hot 82.9°F (28.3°C) in April to a tropical 90.7°F (32.6°C). Casa Grande marks a considerable descent from the daytime apex, as the average temperature dips to a comfortable 66.6°F (19.2°C) at night throughout May.Humidity
In May, the average relative humidity is 19%.Rainfall
In May, the rain falls for 2.2 days. Throughout May, 0.16" (4mm) of precipitation is accumulated. Throughout the year, there are 59.1 rainfall days, and 7.36" (187mm) of precipitation is accumulated.Daylight
In May, the average length of the day is 13h and 52min.On the first day of May, sunrise is at 5:38 am and sunset at 7:09 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 7:30 pm MST.
Sunshine
The average sunshine in May is 11.9h.UV index
The average daily maximum UV index in May is 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In May, a regular UV index of 7 translates into these guidelines:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Casa Grande, AZ
- Average high temperature in May: 90.7°F
The warmest month (with the highest average high temperature) is July (102°F).
The month with the lowest average high temperature is December (62.6°F).
- Average low temperature in May: 66.6°F
The month with the highest average low temperature is August (82.9°F).
The coldest month (with the lowest average low temperature) is January (46.4°F).
Average pressure in May
Casa Grande, AZ
- Average pressure in May: 29.84"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.81"Hg).
Average wind speed in May
Casa Grande, AZ
- Average wind speed in May: 7.1mph
The windiest months (with the highest average wind speed) are April and May (7.1mph).
The calmest months (with the lowest average wind speed) are January and December (4.9mph).
Average humidity in May
Casa Grande, AZ
- Average humidity in May: 19%
The month with the highest relative humidity is December (45%).
The month with the lowest relative humidity is June (16%).
Average rainfall in May
Casa Grande, AZ
- Average rainfall in May: 0.16"
The wettest month (with the highest rainfall) is July (1.02").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in May
Casa Grande, AZ
- Average rainfall days in May: 2.2 days
The month with the highest number of rainy days is July (10.7 days).
The month with the least rainy days is June (1.8 days).
Average daylight in May /
Average sunshine in May
Casa Grande, AZ
- Average daylight in May: 13h and 54min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in May: 11h and 54min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days in May
Casa Grande, AZ
- Average sunshine days in May: 28.4 days
The month with the most sunshine days is May (28.4 days).
The month with the least sunshine days is July (15.4 days).
Average UV index in May
Casa Grande, AZ
- Average UV index in May: 7
The months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in May
Casa Grande, AZ
- Average cloud cover in May: 8
The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 6).
Average visibility in May
Casa Grande, AZ
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
