Knoxville (TN) Rainfall & Precipitation: Monthly Averages and Year-Round Insights
This page shows both the average monthly rainfall and the number of rainy days in Knoxville, Tennessee, United States of America. Long-term data from 1990 to 2020 was used to calculate these averages. Let's now guide you through the details for a complete overview.
Knoxville has a relatively rain/snowy climate with high precipitation levels, averaging 1312 mm of rain/snowfall annually.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm)
The amount of precipitation varies moderately throughout the year. The wettest month, December, sees around 147 mm of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, October, still receives a respectable 79 mm of rainfall.
December, the wettest month, has a maximum daytime temperature of 11°C. The city receives 125 hours of sunshine in this period. During the driest month October you can expect a temperature of 21°C. For more detailed insights into the city’s temperatures, visit our Knoxville Temperature page.
Annual Precipitation in the United States of America
The map below shows the annual precipitation across the United States of America. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Amsterdam Precipitation Compared World Wide
Knoxville’s average annual precipitation is 1312 mm. Let’s compare this to some popular worldwide tourist destinations:
In Barcelona, Spain, the average annual precipitation is 620 mm, evenly distributed across the year with no extreme wet or dry seasons.
Osaka, Japan, experiences 1507 mm of rainfall annually, spread across the year with wetter summers.
In Tokyo, Japan, the average annual precipitation is 1528 mm, with significant summer rains due to typhoon season.
Ho Chi Minh City, Vietnam, receives 1955 mm of annual rainfall, with a pronounced wet season from May to November, typical of its tropical monsoon climate.
How is Precipitation Measured?
Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.
Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.
Interesting weather facts
- Mawsynram in India is noted as being the wettest place on earth, with over 11 meters of rain falling every year.
- In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm per year, with some years recording virtually no rainfall.
- Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.
For more detailed information about Knoxville (TN)’s weather, including sunshine hours, humidity levels, and temperature data, visit our Knoxville (TN) Climate page.
Current rainfall in Knoxville (TN)
