Historical Race Day Weather for the Bellingham Bay Marathon

September 20, 2026

Race day snapshot

Clear

Start Line Conditions

Start Temp 48°F 9°C

Start Humidity 98% Humidity

Wind N 2 mph Wind

Race day high 64°F 18°C

Race day low 44°F 7°C

PR Score 97.77 Normal score 98.33

Course Score 98.48 Course-only Score

Course-adjusted pacing

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September 21, 2025

Race day snapshot

Rain, Overcast

Start Line Conditions

Start Temp 57°F 14°C

Start Humidity 95% Humidity

Wind S 9 mph Wind

Race day high 65°F 18°C

Race day low 54°F 12°C

PR Score 96.74 Normal score 98.33

Course Score 98.48 Course-only Score

September 22, 2024

Race day snapshot

Partially cloudy

Start Line Conditions

Start Temp 53°F 12°C

Start Humidity 87% Humidity

Wind SSE 6 mph Wind

Race day high 65°F 18°C

Race day low 49°F 9°C

PR Score 97.46 Normal score 98.33

Course Score 98.48 Course-only Score

September 24, 2023

Race day snapshot

Partially cloudy

Start Line Conditions

Start Temp 51°F 11°C

Start Humidity 95% Humidity

Wind ESE 3 mph Wind

Race day high 64°F 18°C

Race day low 51°F 11°C

PR Score 97.93 Normal score 98.33

Course Score 98.48 Course-only Score

September 25, 2022

Race day snapshot

Partly Cloudy

Start Line Conditions

Start Temp 52°F 11°C

Start Humidity 98% Humidity

Wind ENE 2 mph Wind

Race day high 71°F 22°C

Race day low 51°F 11°C

PR Score 96.86 Normal score 98.33

Course Score 98.48 Course-only Score

September 26, 2021

Race day snapshot

Mostly Cloudy

Start Line Conditions

Start Temp 55°F 13°C

Start Humidity 80% Humidity

Wind SSE 8 mph Wind

Race day high 62°F 17°C

Race day low 54°F 12°C

PR Score 97.69 Normal score 98.33

Course Score 98.48 Course-only Score

September 29, 2019

Race day snapshot

Overcast

Start Line Conditions

Start Temp 46°F 8°C

Start Humidity 49% Humidity

Wind NNE 12 mph Wind

Race day high 62°F 17°C

Race day low 46°F 8°C

PR Score 98.48 Normal score 98.33

Course Score 98.48 Course-only Score

September 30, 2018

Race day snapshot

Light Rain

Start Line Conditions

Start Temp 54°F 12°C

Start Humidity 89% Humidity

Wind E 4 mph Wind

Race day high 58°F 14°C

Race day low 53°F 12°C

PR Score 97.93 Normal score 98.33

Course Score 98.48 Course-only Score

September 24, 2017

Race day snapshot

Mostly Cloudy

Start Line Conditions

Start Temp 50°F 10°C

Start Humidity 86% Humidity

Wind SSE 2 mph Wind

Race day high 66°F 19°C

Race day low 47°F 8°C

PR Score 98.09 Normal score 98.33

Course Score 98.48 Course-only Score

September 25, 2016

Race day snapshot

Mostly Cloudy

Start Line Conditions

Start Temp 54°F 12°C

Start Humidity 92% Humidity

Wind SE 2 mph Wind

Race day high 66°F 19°C

Race day low 54°F 12°C

PR Score 97.77 Normal score 98.33

Course Score 98.48 Course-only Score

September 27, 2015

Race day snapshot

Partly Cloudy

Start Line Conditions

Start Temp 46°F 8°C

Start Humidity 93% Humidity

Wind S 7 mph Wind

Race day high 62°F 17°C

Race day low 43°F 6°C

PR Score 98.48 Normal score 98.33

Course Score 98.48 Course-only Score

September 28, 2014

Race day snapshot

Mostly Cloudy

Start Line Conditions

Start Temp 54°F 12°C

Start Humidity 89% Humidity

Wind NE 1 mph Wind

Race day high 66°F 19°C

Race day low 55°F 13°C

PR Score 97.97 Normal score 98.33

Course Score 98.48 Course-only Score

September 29, 2013

Race day snapshot

Cloudy

Start Line Conditions

Start Temp 52°F 11°C

Start Humidity 92% Humidity

Wind S 20 mph Wind

Race day high 60°F 16°C

Race day low 49°F 9°C

PR Score 98.23 Normal score 98.33

Course Score 98.48 Course-only Score

September 30, 2012

Race day snapshot

Start Line Conditions

Start Temp 41°F 5°C

Start Humidity 93% Humidity

Wind 0 mph Wind

Race day high 63°F 17°C

Race day low 39°F 4°C

PR Score 98.45 Normal score 98.33

Course Score 98.48 Course-only Score

September 25, 2011

Race day snapshot

Start Line Conditions

Start Temp 61°F 16°C

Start Humidity 68% Humidity

Wind 0 mph Wind

Race day high 73°F 23°C

Race day low 50°F 10°C

PR Score 97.55 Normal score 98.33

Course Score 98.48 Course-only Score

September 26, 2010

Race day snapshot

Start Line Conditions

Start Temp 60°F 16°C

Start Humidity 92% Humidity

Wind 0 mph Wind

Race day high 64°F 18°C

Race day low 60°F 16°C

PR Score 96.01 Normal score 98.33

Course Score 98.48 Course-only Score