Weather: California International Marathon

Historical weather data for race day in December. Use this to plan your race strategy, clothing, and hydration.

Racing conditions: Cool

10°C

Temperature

Range: 5°C – 15°C

65%

Humidity

Moderate

35%

Rain Chance

Possible — check forecast

December

Typical race month

Usually on a Sunday

Conditions

Cool morning temperatures with mild afternoon conditions. Occasional rain is possible during December in Sacramento, but the course is generally dry.

What to Wear

Light gloves

Useful at the start, tuck away later

Long sleeve or arm warmers

Versatile for cool starts

Hydration Strategy

Before the Race

Normal hydration. Drink to thirst in the 24 hours before. Avoid over-hydrating.

During the Race

Drink at aid stations every 3-4km. Alternate water and sports drink.

After the Race

Rehydrate within 30 minutes of finishing. A drink with electrolytes and some protein helps recovery.

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