Best Time to Drive: Anchorage, AK to Ketchikan, AK

The best overall window to drive from Anchorage, AK to Ketchikan, AK is June to July. May is especially comfortable, and 8 AM to 11 AM is usually the easiest departure window. The main things to watch are heavy rain and ponding.

Best overall window

June to July

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

Easiest departure pattern

8 AM to 11 AM

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

Most challenging stretch

January to April

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 June to July, 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

Difficult 23°F

Feb

Difficult 26°F

Mar

Difficult 29°F

Apr

Challenging 39°F

May

Good 48°F

Jun

Great 55°F

Jul

Great 58°F

Aug

Fair 57°F

Sep

Fair 50°F

Oct

Difficult 39°F

Nov

Difficult 28°F

Dec

Difficult 25°F

Best Good/Fair Challenging

Average Conditions by Month

January

Avg high / low 29 / 17°F

Moisture 8 in rain

Rating Difficult

Best departure

7 AM to 10 AM

Storm-prone

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 32 / 20°F

Moisture 5.6 in rain

Rating Difficult

Best departure

7 AM to 10 AM

Storm-prone

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

Rain is common enough that extra buffer time makes sense.

March

Avg high / low 37 / 21°F

Moisture 5.7 in rain

Rating Difficult

Best departure

7 AM to 10 AM

Storm-prone

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

Rain is common enough that extra buffer time makes sense.

April

Avg high / low 47 / 31°F

Moisture 5.5 in rain

Rating Challenging

Best departure

7 AM to 10 AM

Storm-prone

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

Rain is common enough that extra buffer time makes sense.

May

Avg high / low 56 / 39°F

Moisture 4.9 in rain

Rating Good

Best departure

8 AM to 11 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.

June

Avg high / low 63 / 47°F

Moisture 3.6 in rain

Rating Great

Best departure

8 AM to 11 AM

Steady driving window

Daytime temperatures usually stay in a comfortable driving range.

Weather is mixed enough that departure timing still matters.

July

Avg high / low 66 / 51°F

Moisture 3.9 in rain

Rating Great

Best departure

8 AM to 11 AM

Holiday traffic

Daytime temperatures usually stay in a comfortable driving range.

Weather is mixed enough that departure timing still matters.

August

Avg high / low 64 / 49°F

Moisture 6.1 in rain

Rating Fair

Best departure

7 AM to 10 AM

Storm-prone Patchy fog

Daytime temperatures usually stay in a comfortable driving range.

Rain is common enough that extra buffer time makes sense.

September

Avg high / low 56 / 43°F

Moisture 10.9 in rain

Rating Fair

Best departure

7 AM to 10 AM

Storm-prone Patchy fog

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

Rain is common enough that extra buffer time makes sense.

October

Avg high / low 45 / 33°F

Moisture 9.9 in rain

Rating Difficult

Best departure

7 AM to 10 AM

Storm-prone

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

Rain is common enough that extra buffer time makes sense.

November

Avg high / low 34 / 23°F

Moisture 9.2 in rain

Rating Difficult

Best departure

7 AM to 10 AM

Storm-prone 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 30 / 19°F

Moisture 9.4 in rain

Rating Difficult

Best departure

7 AM to 10 AM

Storm-prone 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.

Best Departure Time by Season

Spring

7 AM to 10 AM

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

Summer

8 AM to 11 AM

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

Fall

7 AM to 10 AM

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

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 4 NOAA-backed route checkpoints rather than a single statewide estimate.

Origin zone

Alaska

Destination zone

Alaska

Route sample points

Late route

Late route checkpoint

AK ANCHORAGE MERRILL FLD (1.4 mi away)

Late route

Late route checkpoint

AK HOPE (6.1 mi away)

Late route

Late route checkpoint

AK PORTAGE GLACIER VISITOR CTR (1 mi away)

Destination

Ketchikan, AK

AK BEAVER FALLS (2.2 mi away)

Ready to plan? See the full trip plan from Anchorage, AK to Ketchikan, AK with stops, fuel costs, and directions.

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