September 21 - custom location - Weather History and Averages

High Temperatures

On September 21 in this location the average high temperature is 71.7 °F (22.1 °C). The lowest recored high temperature was 50.0 °F (10.0 °C) in 1995 and the highest recored high temperature was 93.0 °F (33.9 °C) in 2017. The high temperature is usually* between 66.1 °F (19.0 °C) and 77.3 °F (25.2 °C). About a quarter of the time, the high temperature is less than 66.1 °F (19.0 °C), and another quarter of the time, the high temperature is greater than and 77.3 °F (25.2 °C). About 95% of the time, the high temperature has been between 55.5 °F (13.0 °C) and 88.0 °F (31.1 °C).

Low Temperatures

On September 21 in this location the average low temperature is 54.8 °F (12.7 °C). The lowest recored low temperature was 37.0 °F (2.8 °C) in 2006 and the lowest recored low temperature was 73.9 °F (23.3 °C) in 1970. The low temperature is usually* between 49.4 °F (9.7 °C) and 60.3 °F (15.7 °C). About a quarter of the time, the low temperature is less than 49.4 °F (9.7 °C), and another quarter of the time, the low temperature is greater than and 60.3 °F (15.7 °C). About 95% of the time, the low temperature has been between 39.1 °F (3.9 °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 0.2% 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: