St. Louis · January
Run in the midday.
Cold: average high 41°F, low 25°F. Layering becomes the workout. Cold mornings warm into runnable midday hours — the windows around noon catch the warmest temperatures.
Avg high / low
41° / 25°F
Humidity
67%
Rain days
11/mo
Wind
12 mph
What January feels like in St. Louis
Sunrise
08:15
Mid-month average
Sunset
18:05
Mid-month average
Time-of-day breakdown
Morning
Steady cool air, low wind, and good light. The standard runner window in most months.
Midday
Often the warmest few hours of a cold day. If you can only run once, midday gives you the most temperate window.
Evening
Cold drops back in fast after sunset. Tight window — done before headlamp territory.
What to wear running in St. Louis in January
The kit for January in St. Louis: cold-weather layers, gloves, and ear coverage on most mornings.
January vs the surrounding months
vs December
-6° avg high
+1 rain days
St. Louis in December →
January
41°F avg high
11 rain days
Best: midday
vs February
-4° avg high
-1 rain days
St. Louis in February →
Frequently Asked Questions
What is the best time of day to run in St. Louis in January?+
Midday. Cold mornings warm into runnable midday hours — the windows around noon catch the warmest temperatures.
What's the average temperature in St. Louis in January?+
Average high 41°F, average low 25°F.
How does January compare to surrounding months in St. Louis?+
Compared to December (avg high 47°F), January is cooler. Compared to February (avg high 44°F), January is cooler.
Does it rain often in St. Louis in January?+
Expect about 11 measurable rain days in January, on average.