ClimateAverages

Knoxville Climate

Tennessee, United States of America · population 185,291 · 408 weather stations within 200 km · records 1750 to 2025

Average annual daytime high
20.6°C
Warmest month · July
30.7°C
Typical daytime high
Coldest month · January
-1.8°C
Typical overnight low

Knoxville has an average annual daytime high of 20.6°C, based on the 1951 to 1980 baseline. Its warmest month is July, when highs typically reach 30.7°C, and its coldest is January, with overnight lows near -1.8°C.

Month by month averages

MonthAvg highAvg low
January8.4°C-1.8°CColdest
February10.8°C-0.8°C
March15.6°C3.1°C
April21.4°C7.7°C
May25.5°C12.4°C
June29.1°C16.6°C
July30.7°C18.8°CWarmest
August30.5°C18.6°C
September27.7°C15.3°C
October21.6°C7.8°C
November15.3°C2.7°C
December10.1°C-0.8°C

Temperature range across the year

-4°5°14°24°33°JanFebMarAprMayJunJulAugSepOctNovDec
Daytime high Overnight low
Hottest year on record
2016
+2.4°C vs. 1951–1980
Coldest year on record
1787
-3.0°C vs. 1951–1980

These figures reflect annual averages, not single-day records. Daily observations are outside this dataset's precision.

Is Knoxville getting hotter?

Since 1900, Knoxville's average temperature has risen by +1.8°C. Compared to the earliest station records that begin in 1750, warming totals +2.2°C.

13.7°14.3°14.9°15.5°16.1°1951–1980 baseline190019251950197520002025

20-year smoothed annual temperature reconstructed from station anomalies. Dashed line: 1951–1980 baseline.

Best time to visit
March to November

Daytime highs sit within a comfortable 15°C to 26°C range.

FAQ

What is the average temperature in Knoxville?

Knoxville's average annual daytime high is 20.6°C, based on the 1951 to 1980 baseline period. The warmest month is July, with highs averaging 30.7°C, and the coldest is January, with lows averaging -1.8°C.

What is the warmest month in Knoxville?

July is the warmest month in Knoxville, with typical daytime highs of 30.7°C.

What is the hottest year on record for Knoxville?

2016 is the hottest year on record for Knoxville, running +2.4°C above the 1951 to 1980 baseline.

Is Knoxville getting hotter?

Yes. Since 1900, Knoxville has warmed by roughly +1.8°C.

When is the best time to visit Knoxville?

March to November typically offers the most comfortable daytime highs, in the 15°C to 26°C range.

Nearby cities

Baseline period 1951 to 1980. Monthly averages are the mean of station observations weighted by proximity. Warming trend is the 20-year smoothed anomaly against that baseline.