Best Time to Drive: Spokane, WA to West Pasco, WA

The best overall window to drive from Spokane, WA to West Pasco, WA is April to October. May is especially comfortable, and 7 AM to 10 AM is usually the easiest departure window. The main things to watch are heavy rain and ponding.

Best overall window

April to October

This stretch gives the steadiest mix of comfort, daylight, and lower weather friction.

Easiest departure pattern

7 AM to 10 AM

This is short enough that a mid-morning departure still keeps the whole drive comfortable.

Most challenging stretch

November to December

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

Why This Route Scores Differently

This is a same-day corridor, so departure timing matters almost as much as the month you choose.

The current best window is April to October, 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

Challenging 43°F

Feb

Fair 44°F

Mar

Good 47°F

Apr

Great 51°F

May

Excellent 58°F

Jun

Excellent 62°F

Jul

Excellent 67°F

Aug

Excellent 67°F

Sep

Excellent 63°F

Oct

Good 54°F

Nov

Difficult 47°F

Dec

Difficult 42°F

Best Good/Fair Challenging

Average Conditions by Month

January

Avg high / low 48 / 38°F

Moisture 5.8 in rain

Rating Challenging

Best departure

7 AM to 10 AM

Storm-prone Winter mix risk

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

Rain is common enough that extra buffer time makes sense.

February

Avg high / low 50 / 38°F

Moisture 3.8 in rain

Rating Fair

Best departure

7 AM to 10 AM

Winter mix risk

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

Weather is mixed enough that departure timing still matters.

March

Avg high / low 54 / 40°F

Moisture 4.2 in rain

Rating Good

Best departure

7 AM to 10 AM

Wet stretches

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

Weather is mixed enough that departure timing still matters.

April

Avg high / low 59 / 43°F

Moisture 3.2 in rain

Rating Great

Best departure

7 AM to 10 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.

May

Avg high / low 66 / 49°F

Moisture 1.9 in rain

Rating Excellent

Best departure

7 AM to 10 AM

Steady driving window

Daytime temperatures usually stay in a comfortable driving range.

Rain disruption is usually limited compared with wetter months.

June

Avg high / low 71 / 53°F

Moisture 1.5 in rain

Rating Excellent

Best departure

7 AM to 10 AM

Steady driving window

Daytime temperatures usually stay in a comfortable driving range.

Rain disruption is usually limited compared with wetter months.

July

Avg high / low 77 / 57°F

Moisture 0.6 in rain

Rating Excellent

Best departure

7 AM to 10 AM

Holiday traffic

Daytime temperatures usually stay in a comfortable driving range.

Rain disruption is usually limited compared with wetter months.

August

Avg high / low 78 / 57°F

Moisture 1 in rain

Rating Excellent

Best departure

7 AM to 10 AM

Steady driving window

Daytime temperatures usually stay in a comfortable driving range.

Rain disruption is usually limited compared with wetter months.

September

Avg high / low 72 / 54°F

Moisture 1.6 in rain

Rating Excellent

Best departure

7 AM to 10 AM

Steady driving window

Daytime temperatures usually stay in a comfortable driving range.

Rain disruption is usually limited compared with wetter months.

October

Avg high / low 61 / 47°F

Moisture 3.9 in rain

Rating Good

Best departure

7 AM to 10 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.

November

Avg high / low 52 / 41°F

Moisture 6.3 in rain

Rating Difficult

Best departure

7 AM to 10 AM

Storm-prone Patchy fog Holiday traffic

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

Rain is common enough that extra buffer time makes sense.

December

Avg high / low 47 / 37°F

Moisture 5.7 in rain

Rating Difficult

Best departure

7 AM to 10 AM

Storm-prone Winter mix risk Holiday traffic

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

Rain is common enough that extra buffer time makes sense.

Seasonal Hazards on This Route

Heavy rain and ponding

Jan - Dec

Short intense downpours can make a same-day drive feel longer than the raw route time suggests.

Morning visibility dips

Nov

Cooler humid mornings can start with patchy fog, so it can be worth waiting a bit before leaving.

Winter mix risk

Jan - Dec

Even light snow or freezing precipitation can matter more than usual when this route turns into a same-day commitment.

Best Departure Time by Season

Spring

7 AM to 10 AM

This is short enough that a mid-morning departure still keeps the whole drive comfortable.

Summer

7 AM to 10 AM

This is short enough that a mid-morning departure still keeps the whole drive comfortable.

Fall

7 AM to 10 AM

This is short enough that a mid-morning departure still keeps the whole drive comfortable.

Winter

7 AM to 10 AM

A morning departure gives you more room to adjust if rain slows the drive down.

How This Score Was Built

Source

Route-sampled NOAA climate normals

High confidence. Built from 3 NOAA-backed route checkpoints rather than a single statewide estimate.

Origin zone

Pacific Coast

Destination zone

Pacific Coast

Route sample points

Late route

Late route checkpoint

WA statewide fallback (0 mi away)

Late route

Late route checkpoint

WA statewide fallback (0 mi away)

Destination

West Pasco, WA

WA statewide fallback (0 mi away)

Ready to plan? See the full trip plan from Spokane, WA to West Pasco, WA with stops, fuel costs, and directions.

Considering flying instead? Compare driving vs flying for this route.