Monday, October 19, 2026 · Hour-by-hour forecast updated 2:15 AM CDT
61°F and clear at peak. Wind 6 mph from the SSW, dew point 37°F.
Running in Clarksville peaks twice a year — April (FitScore 87) and October (86) — with typical morning lows of 49°F and 54°F respectively. July is the toughest month: sticky dew points averaging 70°F alongside highs of 89°F drag the average FitScore down to 54 — plan on pre-dawn starts. Across the full year, Clarksville ranks #89 of 200 U.S. running cities, with an annual FitScore of 75 (national median: 74). 9 months of the year score 70 or better.
Based on 2015–2024 daily weather history (Open-Meteo ERA5), scored against 200 U.S. cities. Monthly FitScore reflects each day’s best running window.
FitCast texts you tomorrow's hour-by-hour forecast every evening so you know exactly what to expect before your alarm goes off.
Based on today's FitScore analysis, the best time to run is All day with a peak FitScore of 100/100. Check the hourly breakdown above for detailed conditions throughout the day.
The best months for running in Clarksville are April, October, and March, with average FitScores of 87, 86, and 85 based on a decade of daily weather history. The most challenging is July (FitScore 54).
Historically, October in Clarksville averages a FitScore of 86/100 — excellent running weather — with highs around 72°F, lows around 54°F, dew points near 51°F, and 6.2 days of measurable rain. That's about even with the national median of 86 for October.
FitScore rates each hour from 0–100 for outdoor exercise based on temperature, humidity, dew point, wind, precipitation probability, UV index, and air quality. Higher scores mean better conditions.