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Best Boston Marathon Qualifiers

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

Weather Averages for Last 12 Years

Race Day Temperatures	High: 64°F (18°C) Low: 44°F (7°C)
Race Start Conditions	50°F (10°C) Humidity: 75% Partly Cloudy S 6 mph
PR Score	98.47
Course Score	99.32

October 19, 2024

Race Day Temperatures	High: 73°F (23°C) Low: 44°F (7°C)
Race Start Conditions	51°F (11°C) Humidity: 70% Clear NNW 4 mph
PR Score (Normal Score)	99.39 (97.41)
Course Score	99.53

Marathon Pace Bands

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October 7, 2023

Race Day Temperatures	High: 68°F (20°C) Low: 51°F (11°C)
Race Start Conditions	63°F (17°C) Humidity: 86% Rain, Overcast NW 15 mph
PR Score (Normal Score)	97.91 (97.41)
Course Score	99.53

October 1, 2022

Race Day Temperatures	High: 61°F (16°C) Low: 54°F (12°C)
Race Start Conditions	55°F (13°C) Humidity: 100% Overcast ENE 9 mph
PR Score (Normal Score)	98.13 (97.41)
Course Score	99.53

October 2, 2021

Race Day Temperatures	High: 80°F (27°C) Low: 51°F (11°C)
Race Start Conditions	53°F (12°C) Humidity: 93% Partly Cloudy WSW 2 mph
PR Score (Normal Score)	96.97 (97.41)
Course Score	99.25

October 5, 2019

Race Day Temperatures	High: 66°F (19°C) Low: 46°F (8°C)
Race Start Conditions	47°F (8°C) Humidity: 73% Partly Cloudy N 4 mph
PR Score (Normal Score)	99.25 (97.41)
Course Score	99.25

September 29, 2018

Race Day Temperatures	High: 76°F (24°C) Low: 61°F (16°C)
Race Start Conditions	64°F (18°C) Humidity: 87% Partly Cloudy NW 3 mph
PR Score (Normal Score)	96.11 (97.41)
Course Score	99.25

October 28, 2017

Race Day Temperatures	High: 69°F (21°C) Low: 45°F (7°C)
Race Start Conditions	49°F (9°C) Humidity: 75% Clear S 9 mph
PR Score (Normal Score)	99.11 (97.41)
Course Score	99.25

November 20, 2016

Race Day Temperatures	High: 46°F (8°C) Low: 35°F (2°C)
Race Start Conditions	40°F (4°C) Humidity: 44% Partly Cloudy W 12 mph
PR Score (Normal Score)	99.25 (97.41)
Course Score	99.25

November 15, 2015

Race Day Temperatures	High: 60°F (16°C) Low: 34°F (1°C)
Race Start Conditions	46°F (8°C) Humidity: 56% Clear W 2 mph
PR Score (Normal Score)	99.25 (97.41)
Course Score	99.25

November 16, 2014

Race Day Temperatures	High: 47°F (8°C) Low: 27°F (-3°C)
Race Start Conditions	36°F (2°C) Humidity: 56% Mostly Cloudy S 2 mph
PR Score (Normal Score)	99.25 (97.41)
Course Score	99.25

November 17, 2013

Race Day Temperatures	High: 64°F (18°C) Low: 48°F (9°C)
Race Start Conditions	55°F (13°C) Humidity: 89% Mostly Cloudy S 3 mph
PR Score (Normal Score)	97.78 (97.41)
Course Score	99.25

November 18, 2012

Race Day Temperatures	High: 53°F (12°C) Low: 34°F (1°C)
Race Start Conditions	43°F (6°C) Humidity: 69% Mostly Clear N 4 mph
PR Score (Normal Score)	99.25 (97.41)
Course Score	99.25