In general the best time to visit Knoxville is probably July, when the weather is usually great. The hottest months are June, July, August, while the coldest months are January, February, December.
March, April, May, June, September, October, November usually has good weather. Average maximum temperature reaches +29°C during June.
In January, February, July, August, December the weather is average. Expect around 70 rainy days, and the precipitation amounts to approximately 125 mm in July.
Climate in Knoxville
Here is the detailed breakdown of the climate in Knoxville for each month:
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Maximum Temperature
+24°C
+27°C
+30°C
+32°C
+33°C
+41°C
+39°C
+38°C
+36°C
+35°C
+29°C
+25°C
Average Maximum Temperature
+9°C
+12°C
+17°C
+21°C
+25°C
+29°C
+31°C
+30°C
+27°C
+22°C
+16°C
+11°C
Minimum Temperature
-29°C
-26°C
-18°C
-4°C
+2°C
+9°C
+13°C
+11°C
+4°C
-3°C
-8°C
-19°C
Avg. water temperature
-
-
-
-
-
-
-
-
-
-
-
-
Humidity, %
71
69
65
65
72
73
75
75
75
74
71
73
Rain, mm
99
105
116
107
98
95
125
94
87
75
90
109
Snow, mm
13
10
3
1
0
0
0
0
0
0
0
5
Average wind speed, m/s
2
2
2
2
2
1
1
1
1
1
1
2
Sunny Days
5
5
6
7
6
5
4
6
8
10
8
6
Cloud Days
11
9
9
7
7
6
5
6
7
9
10
11
Rainy Days
11
11
14
15
16
17
19
17
14
11
11
12
Snowy Days
4
3
1
0
0
0
0
0
0
0
0
2
Average Temperature
Here are the average maximum and minimum temperatures in Knoxville during the whole year:
The hottest month in Knoxville is July with average maximum temperature going up to +31°C. The coldest month is January with the lowest temperatures of 0°C.
Humidity
The temperature feels different depending on humidity. Here is how humidity in Knoxville looks throughout the year, in %:
The most humid month in Knoxville is September with average humidity going up to 75%. The least humid month is March with an average humidity of 65%.
Rain
Amount of rainfall in mm. in Knoxville during the whole year based on historical data:
The sunniest and driest month is October with approximately 10 sunny days and a total precipitation of around 75 mm. The rainiest and wettest month is July with approximately 19 rainy days and 125 mm of total precipitation.
Snow
Amount of snow in mm. in Knoxville during the whole year based on historical data:
The snowiest month is January with approximately 4 snowy days.
FAQ
Frequently asked questions about the weather in Knoxville:
What is the hottest month in Knoxville?
The hottest month in Knoxville is July with average maximum temperature of +31°C.
What is the coldest month in Knoxville?
The coldest month in Knoxville is January with minimum temperatures of 0°C.
Is Knoxville worth visiting in winter?
Winter in Knoxville could be a good time to visit, as the weather is generally ok.
When does it rain the least in Knoxville?
if you're looking to visit Knoxville when it rains the least, you should plan your trip for July, March, December. During this time, rainfall is rare with the driest month being October with only 75 mm of rain.
For this page, we’ve looked at the typical weather in Knoxville, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.