In June, Tropical Storm Dolores made landfall near the border of the Mexican states of Colima and Michoacán, killing three people and resulting in US$50 million[nb 3] in insured losses.

In August, Hurricane Nora made landfall on the state of Jalisco and paralleled the Pacific coast of Mexico until dissipating, resulting in an estimated $100 million in damage and three more deaths.

Factors they expected to reduce activity were near- or below-average sea surface temperatures across the eastern Pacific and the El Niño–Southern Oscillation remaining in the neutral phase, with the possibility of a La Niña developing.

While Carlos remained away from land, Dolores made landfall on the Mexico coastline and Enrique delivered impacts across southwestern sections of the country while it passed just offshore.

[14] September marked a stark turn around to the activity of the previous months, as it only featured Olaf, which struck San José del Cabo as a Category 2 hurricane.

[9] In early May, the passage of a convectively-coupled kelvin wave (CCKW) enhanced the eastern Pacific monsoon trough, leading to an area of disturbed weather.

Favorable environmental conditions allowed the cyclone to intensify, and it attained peak winds of 60 mph (95 km/h) on June 1 when prominent rainbands wrapped into the center.

Thereafter, an upper-level trough off the southwestern United States increased shear over Blanca and injected dry air into the core, resulting in a weakening trend.

However, increasing dry air around the storm caused Carlos to gradually lose its convection, which ultimately resulted in its degradation to a remnant low by 12:00 UTC on June 16.

[25] A broad cyclonic gyre over Central America, spawned from the interaction of the monsoon trough and a tropical wave, led to the formation of an area of low pressure south of Mexico on June 16.

A favorable environment facilitated its development, and the storm reached peak winds of 70 mph (110 km/h) as it made landfall near San Juan de Alima, Michoacán, around 15:00 UTC on June 19.

[33] At that time, Felicia displayed a warm eye encapsulated by a ring of −70 °C (−94 °F) convection and little additional rainbands outside the eyewall, a signature sign of an annular tropical cyclone.

[33] A tropical wave moved off the coast of Africa on July 6 and emerged into the eastern Pacific basin a week later, where the background environment already favored cyclonic spin.

A potent ridge pushed the cyclone west-northwest, while a favorable combination of low wind shear and very warm ocean temperatures allowed it to intensify.

After its peak, Guillermo encountered cooler waters and higher wind shear, which ultimately caused it to degenerate to a remnant low by 00:00 UTC on July 20.

The newly formed cyclone swiftly intensified amid very high mid-level moisture and ocean temperatures, becoming Tropical Storm Kevin six hours later and reaching peak winds of 65 mph (100 km/h) on August 8.

It moved generally westward, intensifying into Tropical Storm Linda six hours later and organizing further beyond that point, but temporarily succumbing to some dry air and wind shear.

Although that storm's low-level center dissipated over the mountainous terrain of Mexico, its mid-level circulation emerged into the eastern Pacific and soon became encompassed by deep convection.

That thunderstorm activity spawned a new surface center separate from Grace's previous one, and further organization of the disturbance led to the formation of Tropical Storm Marty by 00:00 UTC on August 23.

Marty moved west as it encountered an increasingly hostile environment of dry air and cooler waters, resulting its degeneration to a remnant low by 06:00 UTC on August 24.

[69] Nora made landfall on Jalisco, after which it skirted the coasts of Nayarit and Sinaloa as a weakening storm and rapidly dissipated on August 30 as it moved further inland.

The cyclone's eye and overall presentation continued to improve into September 10, and Olaf reached its peak as a Category 2 hurricane with winds of 105 mph (165 km/h) at 02:50 UTC that day.

Many weather stations near Olaf's landfall location lost power upon the storm's final approach, but widespread tropical storm-force winds were nevertheless recorded.

The system moved west-northwest, tracking parallel to the Mexico coastline initially after formation, and intensified into Tropical Storm Pamela six hours later.

Pamela maintained winds of 75 mph (120 km/h) as it recurved northeast ahead of a broad upper-level trough, and it made landfall at that intensity just north of Mazatlán, Sinaloa, at 12:30 UTC on October 13.

[82] Across the Southern United States, the remnants of Pamela combined with a cold front, leading to a widespread area of 3–6 in (76–152 mm) rainfall totals, with locally higher amounts.

Three people were killed as a result of Pamela, two in Texas when vehicles fell off a bridge into the Martinez Creek near San Antonio and one in Nayarit when one person was swept away into the Acaponeta River.

The system strengthened into Tropical Storm Rick within six hours of formation and continued to intensify amid very favorable environmental conditions as it moved generally north-northwest.

These rains prompted flash flooding that stranded cars and caused damage throughout the region, even well inland across the state of Morelos where one man was killed in Tepoztlán.

[94] At 19:00 UTC on November 1, the NHC began monitoring a disturbance that was expected to develop into an area of low pressure several miles south of the southwestern coast of Mexico.