Historical Race Day Weather for the Snohomish River Run Marathon

October 12, 2025

Race day snapshot

Overcast

Start Line Conditions

Start Temp 48°F 9°C

Start Humidity 89% Humidity

Wind S 10 mph Wind

Race day high 54°F 12°C

Race day low 45°F 7°C

PR Score 99.37 Normal score 99.37

Course Score 99.37 Course-only Score

Course-adjusted pacing

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October 13, 2024

Race day snapshot

Partially cloudy

Start Line Conditions

Start Temp 49°F 9°C

Start Humidity 96% Humidity

Wind SSE 4 mph Wind

Race day high 72°F 22°C

Race day low 49°F 9°C

PR Score 98.99 Normal score 99.37

Course Score 99.37 Course-only Score

October 15, 2023

Race day snapshot

Overcast

Start Line Conditions

Start Temp 54°F 12°C

Start Humidity 87% Humidity

Wind ESE 5 mph Wind

Race day high 67°F 19°C

Race day low 53°F 12°C

PR Score 98.20 Normal score 99.37

Course Score 99.37 Course-only Score

October 16, 2022

Race day snapshot

Clear

Start Line Conditions

Start Temp 52°F 11°C

Start Humidity 60% Humidity

Wind E 4 mph Wind

Race day high 83°F 28°C

Race day low 51°F 11°C

PR Score 99.15 Normal score 99.37

Course Score 99.37 Course-only Score

October 17, 2021

Race day snapshot

Overcast

Start Line Conditions

Start Temp 52°F 11°C

Start Humidity 91% Humidity

Wind SE 5 mph Wind

Race day high 61°F 16°C

Race day low 51°F 11°C

PR Score 99.37 Normal score 99.37

Course Score 99.37 Course-only Score

October 13, 2019

Race day snapshot

Mostly Cloudy

Start Line Conditions

Start Temp 44°F 7°C

Start Humidity 100% Humidity

Wind SW 1 mph Wind

Race day high 57°F 14°C

Race day low 44°F 7°C

PR Score 99.37 Normal score 99.37

Course Score 99.37 Course-only Score

October 14, 2018

Race day snapshot

Clear

Start Line Conditions

Start Temp 39°F 4°C

Start Humidity 69% Humidity

Wind E 3 mph Wind

Race day high 65°F 18°C

Race day low 39°F 4°C

PR Score 99.37 Normal score 99.37

Course Score 99.37 Course-only Score

October 15, 2017

Race day snapshot

Sunny

Start Line Conditions

Start Temp 43°F 6°C

Start Humidity 93% Humidity

Wind NNW 4 mph Wind

Race day high 59°F 15°C

Race day low 42°F 6°C

PR Score 99.37 Normal score 99.37

Course Score 99.37 Course-only Score