Best Time to Drive: Port Isabel, TX to Fort Worth, TX

The best overall window to drive from Port Isabel, TX to Fort Worth, TX is January. June is especially comfortable, and 8 AM to 11 AM is usually the easiest departure window.

Best overall window

January

This is the clearest single-month sweet spot on the calendar.

Easiest departure pattern

8 AM to 11 AM

Mid-morning is usually the steadiest all-around departure window.

Most challenging stretch

December

November is one of the harder months for this route because the weather friction stacks up faster.

Why This Route Scores Differently

This route is long enough that weather comfort across the whole day matters more than just departure conditions.

The current best window is January, when the drive is more likely to feel steady end to end.

This score uses multiple NOAA sample points along the route instead of a single state-wide climate average.

Month-by-Month Driving Conditions

Jan

Fair 28°F

Feb

Fair 30°F

Mar

Fair 32°F

Apr

Fair 36°F

May

Fair 39°F

Jun

Good 41°F

Jul

Good 42°F

Aug

Good 42°F

Sep

Fair 41°F

Oct

Fair 37°F

Nov

Fair 33°F

Dec

Fair 29°F

Best Good/Fair Challenging

Average Conditions by Month

January

Avg high / low 33 / 23°F

Moisture 1.8 in rain

Rating Fair

Best departure

9 AM to 12 PM

Steady driving window

Temperatures are workable, but not as easy as the best shoulder-season windows.

Rain disruption is usually limited compared with wetter months.

February

Avg high / low 34 / 25°F

Moisture 1.5 in rain

Rating Fair

Best departure

9 AM to 12 PM

Steady driving window

Temperatures are workable, but not as easy as the best shoulder-season windows.

Rain disruption is usually limited compared with wetter months.

March

Avg high / low 37 / 28°F

Moisture 2.2 in rain

Rating Fair

Best departure

9 AM to 12 PM

Steady driving window

Temperatures are workable, but not as easy as the best shoulder-season windows.

Rain disruption is usually limited compared with wetter months.

April

Avg high / low 40 / 31°F

Moisture 2 in rain

Rating Fair

Best departure

9 AM to 12 PM

Steady driving window

Temperatures are workable, but not as easy as the best shoulder-season windows.

Rain disruption is usually limited compared with wetter months.

May

Avg high / low 43 / 35°F

Moisture 3.2 in rain

Rating Fair

Best departure

9 AM to 12 PM

Steady driving window

Temperatures are workable, but not as easy as the best shoulder-season windows.

Weather is mixed enough that departure timing still matters.

June

Avg high / low 45 / 37°F

Moisture 2.7 in rain

Rating Good

Best departure

8 AM to 11 AM

Steady driving window

Temperatures are workable, but not as easy as the best shoulder-season windows.

Weather is mixed enough that departure timing still matters.

July

Avg high / low 46 / 38°F

Moisture 1.8 in rain

Rating Good

Best departure

8 AM to 11 AM

Holiday traffic

Temperatures are workable, but not as easy as the best shoulder-season windows.

Rain disruption is usually limited compared with wetter months.

August

Avg high / low 47 / 38°F

Moisture 2.1 in rain

Rating Good

Best departure

8 AM to 11 AM

Steady driving window

Temperatures are workable, but not as easy as the best shoulder-season windows.

Rain disruption is usually limited compared with wetter months.

September

Avg high / low 45 / 36°F

Moisture 2.5 in rain

Rating Fair

Best departure

8 AM to 11 AM

Steady driving window

Temperatures are workable, but not as easy as the best shoulder-season windows.

Weather is mixed enough that departure timing still matters.

October

Avg high / low 42 / 33°F

Moisture 3 in rain

Rating Fair

Best departure

9 AM to 12 PM

Steady driving window

Temperatures are workable, but not as easy as the best shoulder-season windows.

Weather is mixed enough that departure timing still matters.

November

Avg high / low 38 / 28°F

Moisture 1.9 in rain

Rating Fair

Best departure

9 AM to 12 PM

Holiday traffic

Temperatures are workable, but not as easy as the best shoulder-season windows.

Rain disruption is usually limited compared with wetter months.

December

Avg high / low 34 / 24°F

Moisture 1.8 in rain

Rating Fair

Best departure

9 AM to 12 PM

Holiday traffic

Temperatures are workable, but not as easy as the best shoulder-season windows.

Rain disruption is usually limited compared with wetter months.

Best Departure Time by Season

Spring

9 AM to 12 PM

Waiting for a little daylight and warmer pavement usually makes the drive easier.

Summer

8 AM to 11 AM

Mid-morning is usually the steadiest all-around departure window.

Fall

9 AM to 12 PM

Waiting for a little daylight and warmer pavement usually makes the drive easier.

Winter

9 AM to 12 PM

Waiting for a little daylight and warmer pavement usually makes the drive easier.

How This Score Was Built

Source

Route-sampled NOAA climate normals

High confidence. Built from 4 NOAA-backed route checkpoints rather than a single statewide estimate.

Origin zone

Great Plains

Destination zone

Great Plains

Route sample points

Late route

Late route checkpoint

TX S PADRE IS (4.9 mi away)

Late route

Late route checkpoint

TX BEEVILLE 12.6 NNE (8.5 mi away)

Late route

Late route checkpoint

TX AUSTIN BERGSTROM INTL AP 74745 (2.6 mi away)

Destination

Fort Worth, TX

TX FT WORTH BOTANIC GARDEN (2.8 mi away)

Ready to plan? See the full trip plan from Port Isabel, TX to Fort Worth, TX with stops, fuel costs, and directions.

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