In 12 days · Sat, Oct 31, 2026
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Saturday, October 31st, 2026
Hellyer County Park (Buena Vista Pavilion), San Jose CA
5K · 10K · Half · Marathon
50–71°F · low rain risk
See last 10 years
On this date: rain 2 of the last 10 years
2025
48–71°F
dry
2024
50–65°F
rain
2023
41–73°F
dry
2022
49–70°F
dry
2021
52–65°F
dry
2020
52–77°F
dry
2019
39–72°F
dry
2018
48–77°F
dry
2017
52–69°F
dry
2016
50–64°F
rain
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Race-day forecast · Saturday, Oct 31
Rain likely · 59–72°F
Saturday, Oct 31starts near 59°F · 32% chance of rain · wind up to 6 mph
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