Weather in Knoxville in January

A hard month. January is a hard month in Knoxville, and worth planning around. Highs sit at 8.6 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.

January ranks 12 of 12 — near the bottom of Knoxville's year. October is the month that works, and the swing between the two is 39 points, which is a different holiday rather than a slightly better one.

Rain on 10 days, 3 of them heavy. Enough to need a plan B, not enough to need a plan around it. Layers, and a genuinely waterproof outer — at 8.6 °C the difference between a good day and a miserable one is entirely down to what you are wearing.

What the averages hide

Averages flatten a month, and this one hides a few things: 20 nights drop below freezing, so anything left outside stays frozen. Across the twenty years measured, the hottest January day reached 22.8 °C and the coldest night fell to -16.6 °C, and the wettest single day dropped 68 mm — roughly 64% of the month's rain in one day.

January is moderately variable: 46 mm in the driest year against 263 mm in the wettest, around an average of 106 mm. Roughly two Januarys in three land near that average, and the third does something else entirely.

Wind is light at 3.6 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 82%, which at 8.6 °C means damp rather than muggy — the kind of cold that gets into a coat and stays there.

How January sits in the year

This is a turning point in the year — December and February sit on opposite sides of it, so the month contains the change rather than following it.

Daylight in January

January sits at the dark end of Knoxville's year — 10 hours of daylight against 14.6 at midsummer, gaining 0.6 hours across the month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

An inland climate

With no coast nearby, the year swings a fair way — 33.1 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.

How busy it gets

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

January in Knoxville versus nearby

If Knoxville is one option among several, the nearby comparison is worth making. Atlanta is a better bet in January — 2.5 °C warmer, the same number of rain days. Nashville is close enough to be a coin toss — within a degree on temperature, 1 day less rain.

So: January is a compromise. October is 39 points better and is what Knoxville is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Knoxville

See all twelve months in Knoxville, or where else to go in January.