September 21 - custom location - Weather History and Averages

High Temperatures

On September 21 in this location the average high temperature is 73.2 °F (22.9 °C). The lowest recored high temperature was 50.9 °F (10.5 °C) in 1995 and the highest recored high temperature was 93.9 °F (34.4 °C) in 2017. The high temperature is usually* between 67.4 °F (19.7 °C) and 78.9 °F (26.1 °C). About a quarter of the time, the high temperature is less than 67.4 °F (19.7 °C), and another quarter of the time, the high temperature is greater than and 78.9 °F (26.1 °C). About 95% of the time, the high temperature has been between 56.5 °F (13.6 °C) and 89.9 °F (32.1 °C).

Low Temperatures

On September 21 in this location the average low temperature is 55.6 °F (13.1 °C). The lowest recored low temperature was 33.1 °F (0.6 °C) in 1962 and the lowest recored low temperature was 74.5 °F (23.6 °C) in 2021. The low temperature is usually* between 50.2 °F (10.1 °C) and 61.1 °F (16.2 °C). About a quarter of the time, the low temperature is less than 50.2 °F (10.1 °C), and another quarter of the time, the low temperature is greater than and 61.1 °F (16.2 °C). About 95% of the time, the low temperature has been between 39.8 °F (4.3 °C) and 71.5 °F (21.9 °C).

Frost

On September 21 in this location expect the temperatures to drop below freezing for a risk of frost about 0.2% 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: