Monday, October 19, 2026 · Hour-by-hour forecast updated 2:15 AM CDT
57°F and clear at peak. Wind 3 mph from the SW, dew point 47°F.
Running in Louisville peaks twice a year — October (FitScore 87) and April (86) — with typical morning lows of 52°F and 46°F respectively. July is the toughest month: sticky dew points averaging 69°F alongside highs of 87°F drag the average FitScore down to 58 — plan on pre-dawn starts. Across the full year, Louisville ranks #101 of 200 U.S. running cities, with an annual FitScore of 74 (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 Louisville are October, April, and November, with average FitScores of 87, 86, and 83 based on a decade of daily weather history. The most challenging is July (FitScore 58).
Historically, October in Louisville averages a FitScore of 87/100 — excellent running weather — with highs around 70°F, lows around 52°F, dew points near 50°F, and 6.3 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.