United StatesAverage weather for Johnson City in September
It's hot in September in Johnson City with an average temperature of 33°C. Temperatures this month range from a low of 30°C to a high of 35°C. At night, you can expect temperatures between 18°C and 23°C.
Start of September
The month of September starts in Johnson City with hot temps, averaging around 34°C during the day and nights around 23°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
Mid September
By mid-September, daytime temps drop to around 33°C, with nights around 22°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Johnson City is around 32°C, while nighttime temps are about 20°C. A shower might pop up, but overall, the weather will be dry and sunny.
In September, there is an average of 51 mm of precipitation, spread over 6 days. The wind speed is around 3 Bft, mostly coming from the Southeast.
Johnson City in September |
New York | ||
|---|---|---|---|
 Average temperature |
33°C | 27°C | |
 Max. temperature |
35°C | 31°C | |
| Min. temperature |
30°C | -5°C | |
 Total precipitation |
51 mm | 57 mm | |
| Rainy days |
6 days | 9 days | |
August
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Johnson City?
September is a good month to be in Johnson City for sunny weather. You’ll have high temperatures and not too much rain.
The hurricane season in Johnson City runs from June to November.
Temperature records
With 42°C in 2023, Johnson City reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 16°C in 2020. The extreme nighttime temperatures ranged from a lowest recorded value of 8°C to a highest value of 27°C.
Check out the climate of Johnson City for all months and discover the best travel time
Daily Temperature in September in Johnson City
This chart shows the average daily high and low temperatures in September for Johnson City, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Johnson City
The chart below shows the average daily precipitation in September for Johnson City, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 6 days of precipitation in Johnson City.
Daily UV index in September in Johnson City
This chart shows the average daily UV index in September in Johnson City, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Johnson City over the years
This chart shows the average temperature in September in Johnson City, measured in degrees Celsius, over the past few years.
Total precipitation in September in Johnson City over the years
This chart shows the average precipitation in September in Johnson City, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for Johnson City
Click on any day in September to get detailed info about the usual weather on that day in Johnson City. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Johnson City
Have you been to Johnson City in September?
Share your weather experience in September in Johnson City.
Average weather in Johnson City by month
Click on a month below to see detailed weather info for Johnson City. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Johnson City for all months at once
