Monthly Climate
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Best time to visit Knoxville

October is the best time to visit Knoxville for general sightseeing, with average highs of 21 °C and about 8 wet days. The comfortable season runs roughly April to May.

It depends what you are going for

One month rarely wins on everything. These are the best months on each measure taken on its own.

If you want Best month On that measure
Sightseeing and walking October comfort 91/100
The least cloud October 47 % average cloud cover
The least rain October 75 mm
Warmth July 30 °C
Cooler weather January 8.7 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 October 91 21 °C 8
2 May 85 24 °C 12
3 April 84 20 °C 11
4 September 83 27 °C 8
5 June 70 28 °C 13
6 August 68 30 °C 12
7 November 66 15 °C 9
8 March 63 15 °C 12
9 July 62 30 °C 14
10 February 48 11 °C 11
11 December 45 10 °C 10
12 January 39 8.7 °C 11

When to think twice

January scores lowest with about 11 wet days and highs near 8.7 °C. That does not make it a bad month — it depends entirely on what you are travelling for. The numbers are all here; the judgement is yours.

The full year

Month Avg high Rainfall Cloud
January 8.7 °C 110 mm 63 %
February 11.0 °C 111 mm 65 %
March 15.4 °C 123 mm 62 %
April 20.3 °C 110 mm 57 %
May 24.3 °C 93 mm 58 %
June 28.4 °C 90 mm 57 %
July 29.9 °C 116 mm 57 %
August 29.5 °C 85 mm 53 %
September 26.9 °C 94 mm 49 %
October 21.2 °C 75 mm 47 %
November 14.8 °C 94 mm 53 %
December 10.1 °C 118 mm 65 %

Data sources and method

Normal period
1991–2020
Dataset version
era5-1991-2020-scores1.1
Last processed

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: comfort score, beach score, season boundaries. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.