September 21 - custom location - Weather History and Averages

High Temperatures

On September 21 in this location the average high temperature is 74.0 °F (23.4 °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 68.1 °F (20.0 °C) and 80.0 °F (26.7 °C). About a quarter of the time, the high temperature is less than 68.1 °F (20.0 °C), and another quarter of the time, the high temperature is greater than and 80.0 °F (26.7 °C). About 95% of the time, the high temperature has been between 56.7 °F (13.7 °C) and 91.4 °F (33.0 °C).

Low Temperatures

On September 21 in this location the average low temperature is 53.3 °F (11.8 °C). The lowest recored low temperature was 31.1 °F (-0.5 °C) in 1991 and the lowest recored low temperature was 73.0 °F (22.8 °C) in 1970. The low temperature is usually* between 47.3 °F (8.5 °C) and 59.2 °F (15.1 °C). About a quarter of the time, the low temperature is less than 47.3 °F (8.5 °C), and another quarter of the time, the low temperature is greater than and 59.2 °F (15.1 °C). About 95% of the time, the low temperature has been between 36.0 °F (2.2 °C) and 70.5 °F (21.4 °C).

Frost

On September 21 in this location expect the temperatures to drop below freezing for a risk of frost about 0.8% 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: