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 49.8 °F (9.9 °C) in 1983 and the highest recored high temperature was 93.9 °F (34.4 °C) in 2017. The high temperature is usually* between 66.6 °F (19.2 °C) and 79.8 °F (26.6 °C). About a quarter of the time, the high temperature is less than 66.6 °F (19.2 °C), and another quarter of the time, the high temperature is greater than and 79.8 °F (26.6 °C). About 95% of the time, the high temperature has been between 54.1 °F (12.3 °C) and 92.3 °F (33.5 °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 35.6 °F (2.0 °C) in 2020 and the lowest recored low temperature was 73.0 °F (22.8 °C) in 2017. The low temperature is usually* between 50.7 °F (10.4 °C) and 60.9 °F (16.0 °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 (16.0 °C). About 95% of the time, the low temperature has been between 40.9 °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: