Historical Race Day Weather for the Montana Marathon

September 20, 2026

Race day snapshot

Rain, Overcast

Start Line Conditions

Start Temp 52°F 11°C

Start Humidity 92% Humidity

Wind NW 12 mph Wind

Race day high 64°F 18°C

Race day low 52°F 11°C

PR Score 96.78 Normal score 99.51

Course Score 97.37 Course-only Score

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June 1, 2025

Race day snapshot

Partially cloudy

Start Line Conditions

Start Temp 71°F 22°C

Start Humidity 42% Humidity

Wind SW 12 mph Wind

Race day high 80°F 27°C

Race day low 58°F 14°C

PR Score 95.16 Normal score 99.51

Course Score 97.37 Course-only Score

May 19, 2024

Race day snapshot

Partially cloudy

Start Line Conditions

Start Temp 49°F 9°C

Start Humidity 56% Humidity

Wind W 6 mph Wind

Race day high 61°F 16°C

Race day low 43°F 6°C

PR Score 97.37 Normal score 99.51

Course Score 97.37 Course-only Score

May 21, 2023

Race day snapshot

Clear

Start Line Conditions

Start Temp 63°F 17°C

Start Humidity 64% Humidity

Wind WSW 3 mph Wind

Race day high 83°F 28°C

Race day low 56°F 13°C

PR Score 95.65 Normal score 99.51

Course Score 97.37 Course-only Score

May 22, 2022

Race day snapshot

Clear

Start Line Conditions

Start Temp 37°F 3°C

Start Humidity 66% Humidity

Wind E 5 mph Wind

Race day high 60°F 16°C

Race day low 32°F 0°C

PR Score 97.37 Normal score 99.51

Course Score 97.37 Course-only Score

September 19, 2021

Race day snapshot

Mostly Cloudy

Start Line Conditions

Start Temp 59°F 15°C

Start Humidity 44% Humidity

Wind SW 6 mph Wind

Race day high 71°F 22°C

Race day low 53°F 12°C

PR Score 97.37 Normal score 99.51

Course Score 97.37 Course-only Score

September 20, 2020

Race day snapshot

Clear

Start Line Conditions

Start Temp 56°F 13°C

Start Humidity 53% Humidity

Wind WSW 12 mph Wind

Race day high 77°F 25°C

Race day low 55°F 13°C

PR Score 97.37 Normal score 99.51

Course Score 97.37 Course-only Score

September 15, 2019

Race day snapshot

Clear

Start Line Conditions

Start Temp 59°F 15°C

Start Humidity 45% Humidity

Wind SW 7 mph Wind

Race day high 94°F 34°C

Race day low 56°F 13°C

PR Score 98.07 Normal score 99.51

Course Score 98.51 Course-only Score

September 16, 2018

Race day snapshot

Clear

Start Line Conditions

Start Temp 54°F 12°C

Start Humidity 73% Humidity

Wind WSW 2 mph Wind

Race day high 76°F 24°C

Race day low 54°F 12°C

PR Score 98.14 Normal score 99.51

Course Score 98.51 Course-only Score

September 17, 2017

Race day snapshot

Partly Cloudy

Start Line Conditions

Start Temp 42°F 6°C

Start Humidity 74% Humidity

Wind SSW 5 mph Wind

Race day high 70°F 21°C

Race day low 39°F 4°C

PR Score 98.51 Normal score 99.51

Course Score 98.51 Course-only Score

September 18, 2016

Race day snapshot

Mostly Cloudy

Start Line Conditions

Start Temp 57°F 14°C

Start Humidity 55% Humidity

Wind SW 10 mph Wind

Race day high 77°F 25°C

Race day low 56°F 13°C

PR Score 98.40 Normal score 99.51

Course Score 98.51 Course-only Score

September 20, 2015

Race day snapshot

Mostly Clear

Start Line Conditions

Start Temp 50°F 10°C

Start Humidity 52% Humidity

Wind SW 9 mph Wind

Race day high 81°F 27°C

Race day low 48°F 9°C

PR Score 98.51 Normal score 99.51

Course Score 98.51 Course-only Score

September 21, 2014

Race day snapshot

Clear

Start Line Conditions

Start Temp 47°F 8°C

Start Humidity 71% Humidity

Wind NW 5 mph Wind

Race day high 78°F 26°C

Race day low 46°F 8°C

PR Score 98.51 Normal score 99.51

Course Score 98.51 Course-only Score

September 15, 2013

Race day snapshot

Mostly Cloudy

Start Line Conditions

Start Temp 56°F 13°C

Start Humidity 80% Humidity

Wind NNE 9 mph Wind

Race day high 75°F 24°C

Race day low 56°F 13°C

PR Score 97.60 Normal score 99.51

Course Score 98.51 Course-only Score

September 16, 2012

Race day snapshot

Partly Cloudy

Start Line Conditions

Start Temp 59°F 15°C

Start Humidity 32% Humidity

Wind SSW 10 mph Wind

Race day high 70°F 21°C

Race day low 49°F 9°C

PR Score 98.51 Normal score 99.51

Course Score 98.51 Course-only Score