September 21 - custom location - Weather History and Averages

High Temperatures

On September 21 in this location the average high temperature is 77.2 °F (25.1 °C). The lowest recored high temperature was 59.0 °F (15.0 °C) in 1999 and the highest recored high temperature was 93.9 °F (34.4 °C) in 2017. The high temperature is usually* between 71.5 °F (21.9 °C) and 82.9 °F (28.3 °C). About a quarter of the time, the high temperature is less than 71.5 °F (21.9 °C), and another quarter of the time, the high temperature is greater than and 82.9 °F (28.3 °C). About 95% of the time, the high temperature has been between 60.6 °F (15.9 °C) and 93.9 °F (34.4 °C).

Low Temperatures

On September 21 in this location the average low temperature is 54.1 °F (12.3 °C). The lowest recored low temperature was 35.6 °F (2.0 °C) in 2020 and the lowest recored low temperature was 70.0 °F (21.1 °C) in 2022. The low temperature is usually* between 48.3 °F (9.1 °C) and 59.8 °F (15.4 °C). About a quarter of the time, the low temperature is less than 48.3 °F (9.1 °C), and another quarter of the time, the low temperature is greater than and 59.8 °F (15.4 °C). About 95% of the time, the low temperature has been between 37.4 °F (3.0 °C) and 70.7 °F (21.5 °C).

Frost

On September 21 in this location expect the temperatures to drop below freezing for a risk of frost about 0.5% 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: