September 21 - custom location - Weather History and Averages

High Temperatures

On September 21 in this location the average high temperature is 75.0 °F (23.9 °C). The lowest recored high temperature was 60.8 °F (16.0 °C) in 1999 and the highest recored high temperature was 91.9 °F (33.3 °C) in 2024. The high temperature is usually* between 69.3 °F (20.7 °C) and 80.7 °F (27.0 °C). About a quarter of the time, the high temperature is less than 69.3 °F (20.7 °C), and another quarter of the time, the high temperature is greater than and 80.7 °F (27.0 °C). About 95% of the time, the high temperature has been between 58.6 °F (14.8 °C) and 91.4 °F (33.0 °C).

Low Temperatures

On September 21 in this location the average low temperature is 55.8 °F (13.2 °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 50.7 °F (10.4 °C) and 60.9 °F (16.1 °C). About a quarter of the time, the low temperature is less than 50.7 °F (10.4 °C), and another quarter of the time, the low temperature is greater than and 60.9 °F (16.1 °C). About 95% of the time, the low temperature has been between 41.0 °F (5.0 °C) and 70.6 °F (21.5 °C).

Frost

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