Weather: Napa Valley Marathon
Historical weather data for race day in March. Use this to plan your race strategy, clothing, and hydration.
16°C
Temperature
Range: 11°C – 22°C
65%
Humidity
Moderate
25%
Rain Chance
Low chance of rain
March
Typical race month
Usually on a Sunday
Conditions
March in Napa Valley offers mild spring weather with temperatures typically in the mid-60s Fahrenheit. Morning fog is common, clearing to pleasant afternoons with low precipitation risk.
What to Wear
Singlet or short sleeve
Ideal racing temperatures
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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