September 21 - custom location - Weather History and Averages

High Temperatures

On September 21 in this location the average high temperature is 73.3 °F (22.9 °C). The lowest recored high temperature was 59.0 °F (15.0 °C) in 1962 and the highest recored high temperature was 91.6 °F (33.1 °C) in 2017. The high temperature is usually* between 67.9 °F (19.9 °C) and 78.6 °F (25.9 °C). About a quarter of the time, the high temperature is less than 67.9 °F (19.9 °C), and another quarter of the time, the high temperature is greater than and 78.6 °F (25.9 °C). About 95% of the time, the high temperature has been between 57.7 °F (14.3 °C) and 88.8 °F (31.6 °C).

Low Temperatures

On September 21 in this location the average low temperature is 57.0 °F (13.9 °C). The lowest recored low temperature was 35.8 °F (2.1 °C) in 2020 and the lowest recored low temperature was 72.3 °F (22.4 °C) in 2016. The low temperature is usually* between 51.8 °F (11.0 °C) and 62.2 °F (16.8 °C). About a quarter of the time, the low temperature is less than 51.8 °F (11.0 °C), and another quarter of the time, the low temperature is greater than and 62.2 °F (16.8 °C). About 95% of the time, the low temperature has been between 41.8 °F (5.4 °C) and 72.2 °F (22.3 °C).

Frost

On September 21 in this location expect the temperatures to drop below freezing for a risk of frost about 0.1% of the time.

Usually* in this context means around 50% of the time, assuming a normal distribution of values.

Data Source(s)

The data used to compute the average high/low temperatures for this location were taken from the following stations: