Historical Race Day Weather for the Clarence DeMar Marathon

September 28, 2025

Race day snapshot

Overcast

Start Line Conditions

Start Temp 61°F 16°C

Start Humidity 96% Humidity

Wind No Wind Wind

Race day high 83°F 28°C

Race day low 57°F 14°C

PR Score 95.23 Normal score 99.05

Course Score 99.43 Course-only Score

Course-adjusted pacing

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September 29, 2024

Race day snapshot

Overcast

Start Line Conditions

Start Temp 60°F 16°C

Start Humidity 77% Humidity

Wind No Wind Wind

Race day high 70°F 21°C

Race day low 54°F 12°C

PR Score 97.79 Normal score 99.05

Course Score 99.43 Course-only Score

September 24, 2023

Race day snapshot

Rain, Partially cloudy

Start Line Conditions

Start Temp 54°F 12°C

Start Humidity 83% Humidity

Wind ENE 6 mph Wind

Race day high 65°F 18°C

Race day low 51°F 11°C

PR Score 98.49 Normal score 99.05

Course Score 99.43 Course-only Score

September 25, 2022

Race day snapshot

Partly Cloudy

Start Line Conditions

Start Temp 43°F 6°C

Start Humidity 100% Humidity

Wind SW 2 mph Wind

Race day high 70°F 21°C

Race day low 40°F 4°C

PR Score 98.62 Normal score 99.05

Course Score 99.43 Course-only Score

September 26, 2021

Race day snapshot

Mostly Cloudy

Start Line Conditions

Start Temp 54°F 12°C

Start Humidity 100% Humidity

Wind WNW 2 mph Wind

Race day high 70°F 21°C

Race day low 51°F 11°C

PR Score 97.26 Normal score 99.05

Course Score 99.43 Course-only Score

September 29, 2019

Race day snapshot

Partly Cloudy

Start Line Conditions

Start Temp 56°F 13°C

Start Humidity 94% Humidity

Wind N 8 mph Wind

Race day high 69°F 21°C

Race day low 51°F 11°C

PR Score 98.51 Normal score 99.05

Course Score 99.43 Course-only Score

September 30, 2018

Race day snapshot

Foggy

Start Line Conditions

Start Temp 44°F 7°C

Start Humidity 96% Humidity

Wind SW 0 mph Wind

Race day high 64°F 18°C

Race day low 43°F 6°C

PR Score 99.43 Normal score 99.05

Course Score 99.43 Course-only Score

September 24, 2017

Race day snapshot

Clear

Start Line Conditions

Start Temp 59°F 15°C

Start Humidity 96% Humidity

Wind N 1 mph Wind

Race day high 88°F 31°C

Race day low 57°F 14°C

PR Score 95.03 Normal score 99.05

Course Score 99.43 Course-only Score

September 25, 2016

Race day snapshot

Clear

Start Line Conditions

Start Temp 42°F 6°C

Start Humidity 73% Humidity

Wind NW 1 mph Wind

Race day high 63°F 17°C

Race day low 38°F 3°C

PR Score 99.43 Normal score 99.05

Course Score 99.43 Course-only Score

September 27, 2015

Race day snapshot

Mostly Clear

Start Line Conditions

Start Temp 43°F 6°C

Start Humidity 70% Humidity

Wind S 2 mph Wind

Race day high 68°F 20°C

Race day low 37°F 3°C

PR Score 99.43 Normal score 99.05

Course Score 99.43 Course-only Score

September 28, 2014

Race day snapshot

Clear

Start Line Conditions

Start Temp 65°F 18°C

Start Humidity 65% Humidity

Wind S 2 mph Wind

Race day high 84°F 29°C

Race day low 52°F 11°C

PR Score 98.18 Normal score 99.05

Course Score 99.92 Course-only Score

September 29, 2013

Race day snapshot

Overcast

Start Line Conditions

Start Temp 45°F 7°C

Start Humidity 87% Humidity

Wind No Wind Wind

Race day high 71°F 22°C

Race day low 42°F 6°C

PR Score 99.92 Normal score 99.05

Course Score 99.92 Course-only Score

September 30, 2012

Race day snapshot

Overcast

Start Line Conditions

Start Temp 54°F 12°C

Start Humidity 94% Humidity

Wind No Wind Wind

Race day high 60°F 16°C

Race day low 48°F 9°C

PR Score 99.13 Normal score 99.05

Course Score 99.92 Course-only Score

September 25, 2011

Race day snapshot

Clear

Start Line Conditions

Start Temp 33°F 1°C

Start Humidity 92% Humidity

Wind No Wind Wind

Race day high 64°F 18°C

Race day low 30°F -1°C

PR Score 99.19 Normal score 99.05

Course Score 99.19 Course-only Score

September 26, 2010

Race day snapshot

Clear

Start Line Conditions

Start Temp 48°F 9°C

Start Humidity 93% Humidity

Wind SSW 10 mph Wind

Race day high 62°F 17°C

Race day low 46°F 8°C

PR Score 99.19 Normal score 99.05

Course Score 99.19 Course-only Score