Tucson, Arizona recorded 4.5 in (110 mm) of rain from the storm, resulting in flash flooding that reached a depth of 2 ft (0.61 m) in some places.

By September 22, shower and thunderstorm activity increased as it crossed Central America and entered the eastern Pacific basin.

The National Hurricane Center (NHC) estimated that the wave spawned Tropical Depression Twenty One-E about 200 miles (320 km) south of Acapulco, Mexico, on September 25.

[1] Raymond maintained a small area of deep convection around the center of circulation; however, outflow gradually became restricted due to the upper-level trough over Mexico.

[3] Southerly wind shear around the storm began to increase late on September 27 in response to a cutoff low developing over southern Texas and northern Mexico; this led to a decrease in shower and thunderstorm activity with the system, preventing intensification.

[7] Early on October 1, Raymond reached its peak intensity with winds of 145 mph (233 km/h) and a barometric pressure of 935 mbar (hPa; 27.61 inHg).

[8] By October 2, convection surrounding the eye warmed and Raymond was downgraded to a Category 3 hurricane as it began to slow in a weak steering environment.

[9] Early the next day, the now Category 2 hurricane turned northeast and quickly accelerated in response to an approaching long-wave trough.

[10] Increasing wind shear and decreasing water temperatures sped up the rate of weakening as Raymond approached the Baja California Peninsula.

[1] Around 2300 UTC on October 4, the center of the storm made landfall in the municipality of Ensenada in Mexican state of Baja California with winds of 50 mph (80 km/h).

[11] Shortly after moving inland, Raymond weakened to a tropical depression and quickly transitioned into an extratropical cyclone over Arizona in the Southwest United States.

In mainland Mexico, a tropical storm watch was issued for coastal areas of Sonora between Cabo Lobos and Puerto Penasco.

The fast forward speed of the storm limited the amount of rain in the Baja California Peninsula, with only a small area receiving more than 3 in (76 mm).