Historical Race Day Weather for the Potomac River Run Marathon (October)

October 18, 2025

Race day snapshot

Partially cloudy

Start Line Conditions

Start Temp 54°F 12°C

Start Humidity 79% Humidity

Wind N 4 mph Wind

Race day high 73°F 23°C

Race day low 50°F 10°C

PR Score 99.08 Normal score 97.41

Course Score 99.53 Course-only Score

Course-adjusted pacing

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Potomac River Run Marathon (October) Pace Bands are adjusted for the specific terrain of the course, your goal time, and pacing strategy.

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October 19, 2024

Race day snapshot

Clear

Start Line Conditions

Start Temp 51°F 11°C

Start Humidity 70% Humidity

Wind NNW 4 mph Wind

Race day high 73°F 23°C

Race day low 44°F 7°C

PR Score 99.39 Normal score 97.41

Course Score 99.53 Course-only Score

October 7, 2023

Race day snapshot

Rain, Overcast

Start Line Conditions

Start Temp 63°F 17°C

Start Humidity 86% Humidity

Wind NW 15 mph Wind

Race day high 68°F 20°C

Race day low 51°F 11°C

PR Score 97.91 Normal score 97.41

Course Score 99.53 Course-only Score

October 1, 2022

Race day snapshot

Overcast

Start Line Conditions

Start Temp 55°F 13°C

Start Humidity 100% Humidity

Wind ENE 9 mph Wind

Race day high 61°F 16°C

Race day low 54°F 12°C

PR Score 98.13 Normal score 97.41

Course Score 99.53 Course-only Score

October 2, 2021

Race day snapshot

Partly Cloudy

Start Line Conditions

Start Temp 53°F 12°C

Start Humidity 93% Humidity

Wind WSW 2 mph Wind

Race day high 80°F 27°C

Race day low 51°F 11°C

PR Score 96.97 Normal score 97.41

Course Score 99.25 Course-only Score

October 5, 2019

Race day snapshot

Partly Cloudy

Start Line Conditions

Start Temp 47°F 8°C

Start Humidity 73% Humidity

Wind N 4 mph Wind

Race day high 66°F 19°C

Race day low 46°F 8°C

PR Score 99.25 Normal score 97.41

Course Score 99.25 Course-only Score

September 29, 2018

Race day snapshot

Partly Cloudy

Start Line Conditions

Start Temp 64°F 18°C

Start Humidity 87% Humidity

Wind NW 3 mph Wind

Race day high 76°F 24°C

Race day low 61°F 16°C

PR Score 96.11 Normal score 97.41

Course Score 99.25 Course-only Score

October 28, 2017

Race day snapshot

Clear

Start Line Conditions

Start Temp 49°F 9°C

Start Humidity 75% Humidity

Wind S 9 mph Wind

Race day high 69°F 21°C

Race day low 45°F 7°C

PR Score 99.11 Normal score 97.41

Course Score 99.25 Course-only Score

November 20, 2016

Race day snapshot

Partly Cloudy

Start Line Conditions

Start Temp 40°F 4°C

Start Humidity 44% Humidity

Wind W 12 mph Wind

Race day high 46°F 8°C

Race day low 35°F 2°C

PR Score 99.25 Normal score 97.41

Course Score 99.25 Course-only Score

November 15, 2015

Race day snapshot

Clear

Start Line Conditions

Start Temp 46°F 8°C

Start Humidity 56% Humidity

Wind W 2 mph Wind

Race day high 60°F 16°C

Race day low 34°F 1°C

PR Score 99.25 Normal score 97.41

Course Score 99.25 Course-only Score

November 16, 2014

Race day snapshot

Mostly Cloudy

Start Line Conditions

Start Temp 36°F 2°C

Start Humidity 56% Humidity

Wind S 2 mph Wind

Race day high 47°F 8°C

Race day low 27°F -3°C

PR Score 99.25 Normal score 97.41

Course Score 99.25 Course-only Score

November 17, 2013

Race day snapshot

Mostly Cloudy

Start Line Conditions

Start Temp 55°F 13°C

Start Humidity 89% Humidity

Wind S 3 mph Wind

Race day high 64°F 18°C

Race day low 48°F 9°C

PR Score 97.78 Normal score 97.41

Course Score 99.25 Course-only Score

November 18, 2012

Race day snapshot

Mostly Clear

Start Line Conditions

Start Temp 43°F 6°C

Start Humidity 69% Humidity

Wind N 4 mph Wind

Race day high 53°F 12°C

Race day low 34°F 1°C

PR Score 99.25 Normal score 97.41

Course Score 99.25 Course-only Score