September 21 - custom location - Weather History and Averages

High Temperatures

On September 21 in this location the average high temperature is 71.5 °F (22.0 °C). The lowest recored high temperature was 50.0 °F (10.0 °C) in 1995 and the highest recored high temperature was 92.8 °F (33.8 °C) in 1992. The high temperature is usually* between 66.0 °F (18.9 °C) and 77.0 °F (25.0 °C). About a quarter of the time, the high temperature is less than 66.0 °F (18.9 °C), and another quarter of the time, the high temperature is greater than and 77.0 °F (25.0 °C). About 95% of the time, the high temperature has been between 55.5 °F (13.0 °C) and 87.5 °F (30.9 °C).

Low Temperatures

On September 21 in this location the average low temperature is 55.2 °F (12.9 °C). The lowest recored low temperature was 31.1 °F (-0.5 °C) in 2019 and the lowest recored low temperature was 72.0 °F (22.2 °C) in 1994. The low temperature is usually* between 50.2 °F (10.1 °C) and 60.2 °F (15.7 °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 60.2 °F (15.7 °C). About 95% of the time, the low temperature has been between 40.7 °F (4.8 °C) and 69.7 °F (20.9 °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: