News Summary
Phoenix is expected to experience a rise in monsoon storm activity this week, with increased chances of rain and cooler temperatures. The National Weather Service forecasts rain starting Wednesday, with overnight showers likely. The temperatures could dip below 100 degrees for the first time since late June. Rain chances may peak at 50% on July 16 and 17, offering relief after an extended dry period. Residents are advised to stay updated on weather conditions as the chances for rain diminish after July 18.
Phoenix is expected to experience increased monsoon storm activity this week, bringing with it the potential for rain and cooler temperatures. The National Weather Service has indicated that rain chances are set to rise, particularly on Wednesday and Thursday, following a period of significant dryness since the monsoon season began on June 15.
On Tuesday, storm activity is likely to occur in areas south and east of the Valley, although uncertainty remains about the storm’s progression. Rain may begin in Phoenix as early as Wednesday morning, with most of the rainfall anticipated during the overnight hours. The forecast indicates that temperatures could remain below normal, possibly not exceeding the 100-degree mark for the first time since June 22.
Wednesday and Thursday are expected to see the coolest temperatures of the week, with the possibility of temperatures remaining below 100 degrees if cloud cover or rain persists. As the week progresses, the forecast suggests a 40 to 50% chance of rain in Phoenix on July 16 and 17, while more significant rainfall opportunities are expected at higher terrain areas, with chances ranging from 60 to 80%.
Since the onset of the monsoon season, Phoenix has only recorded measurable rainfall on one occasion—0.16 inches on July 2. Prior to this, the last measurable rain occurred on June 4, contributing to the area’s dry spell. Historically, Phoenix sees an average of 10 days with measurable rainfall during the monsoon season, with mountainous regions receiving rain on 30 to 50 days over the same timeframe. The average monsoon rainfall for Phoenix from 1991 to 2020 stands at 2.43 inches.
The Climate Prediction Center forecasts above-average precipitation for most of Arizona by the end of July, aligning with the National Weather Service’s outlook, which assigns a 43% chance for above-normal precipitation during this monsoon season. The average annual rainfall for Phoenix from 1991 to 2020 is reported at 7.22 inches, a slight decrease from the previous average of 8.03 inches recorded from 1981 to 2010.
As the week unfolds, residents of Phoenix can anticipate a noticeable change in weather conditions, with the increased likelihood of rainfall and lower temperatures, factors that could provide welcome relief from the summer heat. However, with rain chances predicted to decrease to about 15 to 30% after July 18, residents are encouraged to stay informed regarding daily weather updates.
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Additional Resources
- KTAR News
- ABC15 Weather
- AZ Central
- Phoenix New Times
- AZ Family
- Wikipedia: Monsoon
- Google Search: Phoenix weather monsoon
- Google Scholar: monsoon season Arizona
- Encyclopedia Britannica: Monsoon
- Google News: Phoenix weather update
