Best Time to Drive: Prineville, OR to Gresham, OR

The best overall window to drive from Prineville, OR to Gresham, OR is June to September. June is especially comfortable, and 9 AM to 12 PM is usually the easiest departure window.

Best overall window

June to September

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

Easiest departure pattern

9 AM to 12 PM

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

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 June to September, 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 25°F

Feb

Fair 27°F

Mar

Good 30°F

Apr

Good 33°F

May

Good 38°F

Jun

Great 42°F

Jul

Great 46°F

Aug

Excellent 46°F

Sep

Great 42°F

Oct

Good 35°F

Nov

Challenging 29°F

Dec

Challenging 25°F

Best Good/Fair Challenging

Average Conditions by Month

January

Avg high / low 30 / 20°F

Moisture 4.3 in rain

Rating Challenging

Best departure

9 AM to 12 PM

Wet stretches

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

Weather is mixed enough that departure timing still matters.

February

Avg high / low 33 / 21°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.

March

Avg high / low 37 / 23°F

Moisture 3 in rain

Rating Good

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.

April

Avg high / low 41 / 26°F

Moisture 2.3 in rain

Rating Good

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 46 / 30°F

Moisture 2.2 in rain

Rating Good

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.

June

Avg high / low 50 / 33°F

Moisture 1.5 in rain

Rating Great

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.

July

Avg high / low 56 / 36°F

Moisture 0.4 in rain

Rating Great

Best departure

7 AM to 10 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 56 / 36°F

Moisture 0.5 in rain

Rating Excellent

Best departure

7 AM to 10 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 52 / 32°F

Moisture 1.1 in rain

Rating Great

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.

October

Avg high / low 43 / 27°F

Moisture 2.8 in rain

Rating Good

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 35 / 23°F

Moisture 4.2 in rain

Rating Challenging

Best departure

9 AM to 12 PM

Wet stretches Holiday traffic

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

Weather is mixed enough that departure timing still matters.

December

Avg high / low 30 / 20°F

Moisture 4.9 in rain

Rating Challenging

Best departure

9 AM to 12 PM

Wet stretches Holiday traffic

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

Weather is mixed enough that departure timing still matters.

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

9 AM to 12 PM

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

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 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

OR PRINEVILLE (0.3 mi away)

Late route

Late route checkpoint

OR Clear Lake (0.8 mi away)

Destination

Gresham, OR

OR statewide fallback (0 mi away)

Ready to plan? See the full trip plan from Prineville, OR to Gresham, OR with stops, fuel costs, and directions.

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