Best Time to Drive: Nevada City, CA to San Francisco, CA

The best overall window to drive from Nevada City, CA to San Francisco, CA 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

January to February

February 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 48°F

Feb

Challenging 50°F

Mar

Fair 53°F

Apr

Excellent 56°F

May

Excellent 61°F

Jun

Excellent 66°F

Jul

Great 70°F

Aug

Excellent 70°F

Sep

Great 68°F

Oct

Excellent 62°F

Nov

Good 53°F

Dec

Difficult 47°F

Best Good/Fair Challenging

Average Conditions by Month

January

Avg high / low 55 / 40°F

Moisture 6.8 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.

February

Avg high / low 59 / 41°F

Moisture 6.6 in rain

Rating Challenging

Best departure

7 AM to 10 AM

Storm-prone Patchy fog 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.

March

Avg high / low 62 / 43°F

Moisture 5.6 in rain

Rating Fair

Best departure

7 AM to 10 AM

Storm-prone Patchy fog Winter mix risk

Daytime temperatures usually stay in a comfortable driving range.

Rain is common enough that extra buffer time makes sense.

April

Avg high / low 66 / 45°F

Moisture 2.7 in rain

Rating Excellent

Best departure

7 AM to 10 AM

Steady driving window

Daytime temperatures usually stay in a comfortable driving range.

Weather is mixed enough that departure timing still matters.

May

Avg high / low 72 / 50°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.

June

Avg high / low 78 / 54°F

Moisture 0.4 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 83 / 58°F

Moisture 0 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 83 / 57°F

Moisture 0.1 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 81 / 55°F

Moisture 0.2 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.

Rain disruption is usually limited compared with wetter months.

October

Avg high / low 73 / 50°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.

November

Avg high / low 62 / 44°F

Moisture 3.7 in rain

Rating Good

Best departure

7 AM to 10 AM

Holiday traffic

Daytime temperatures usually stay in a comfortable driving range.

Weather is mixed enough that departure timing still matters.

December

Avg high / low 55 / 40°F

Moisture 7.4 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.

Morning visibility dips

Feb - Mar

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

Winter mix risk

Feb - Mar

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

CA NEVADA CITY (1.4 mi away)

Late route

Late route checkpoint

CA VACAVILLE/NUT TREE AP ASOS (0.4 mi away)

Destination

San Francisco, CA

CA SAN FRANCISCO DWTN (0.5 mi away)

Ready to plan? See the full trip plan from Nevada City, CA to San Francisco, CA with stops, fuel costs, and directions.

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