Arizona Braces for Historic June Rain: Weather Action Day Declared
Phoenix, Arizona – Get ready for a significant weather shift this weekend! Forecasters are predicting a rare early June rain event for Arizona, potentially marking a historic moment.
A unique weather pattern is developing as a low-pressure system descends off the coast of Baja California.This system is interacting with moisture pulled in from Tropical Storm alvin, creating conditions ripe for rainfall across the state.
Sunday: An Abc15 Weather Action Day
Sunday is declared an Abc15 Weather Action Day. Residents are urged to stay weather-aware and prepared to adjust any outdoor activities. Expect scattered to widespread showers and storms,especially from afternoon into the evening.

Expected Weather Conditions. Source: Abc15
Potential Rainfall Amounts And impacts
Valley areas could see rainfall amounts between 0.10″ and 0.25″. Motorists should be aware of potentially slick roads and reduced visibility during heavier downpours.
The rarity of this June weather event cannot be overstated. Phoenix has seen measurable rainfall on June 1st only once in recorded history-dating back over 125 years to 1914. Should rain materialize this Sunday, it will indeed be a record-breaker.

Potential Weather Impacts. Source: Abc15
Temperature Drop And Mid-Week Monitoring
Until Sunday, expect continued toasty conditions with temperatures near 100°F in the Valley thru Saturday. As cloud cover and rain arrive Sunday, temperatures will dip into the low to mid-90s, with cooler conditions expected into next week.
Another weather system is being monitored around midweek. While it might not bring significant rainfall, its presence highlights an active weather pattern affecting the region.

rare Rainfall Potential. Source: Abc15
Arizona Weather: Key Facts At A Glance
| Fact | Details |
|---|---|
| Rare June Rain | Potential for historic rainfall on June 1st, a very rare occurrence. |
| Weather System | Low-pressure system from Baja, interacting with Tropical Storm Alvin moisture. |
| Temperature Drop | From near 100°F to low/mid 90s with the arrival of rain and clouds. |
| Impacts | Slick roads, reduced visibility, possible lightning and gusty winds. |
Understanding Arizona’s Monsoon Season
Arizona’s weather patterns are heavily influenced by the annual monsoon season, which typically runs from late June through September. This period is characterized by a shift in wind patterns, drawing moisture from the Gulf of California and the Gulf of Mexico.
While the predicted early June rain is unusual, it serves as a reminder of the dynamic and sometimes unpredictable nature of desert weather. Residents should always stay informed and prepared for sudden changes in weather conditions.
Did You Know? In recent years,Arizona has experienced an increase in extreme weather events,including both severe droughts and intense monsoon storms. According to a 2024 report by the National Climate Assessment, these trends are expected to continue due to climate change.

Expected temperatures. Source: Abc15
Pro Tip: Download a reliable weather app on your smartphone and enable notifications for weather alerts. This will help you stay informed about changing conditions and potential hazards.
Frequently Asked Questions About Arizona Weather
- Why Is Arizona Experiencing Rare June Rain? A Low-Pressure System Off Baja California Is Interacting With Moisture From Tropical Storm Alvin, Creating Conditions For Early June Rain.
- What Is A Weather Action Day? A Weather Action Day Is Declared To Alert Residents To Potential Hazardous Weather Conditions, Urging them To Stay Informed And Prepared.
- How Much Rainfall Is Expected In Phoenix? Some Areas In The Valley Could See Between 0.10″ And 0.25″ Of Rain.
- How Rare Is Early June Rainfall In Arizona? Phoenix Has Recorded Measurable Rainfall On June 1st Only Once In The Past 125+ Years, Back In 1914, Making This Event Potentially Historic.
- Will Temperatures Drop With The Rain? Yes, Temperatures Are Expected To Drop from Near 100°F To The Low To Mid-90s as Clouds And Rain Move In.
Are you prepared for the upcoming June weather shift? What are your plans for the Weather Action Day? Share your thoughts and planning tips in the comments below!