September 21 - custom location - Weather History and Averages

High Temperatures

On September 21 in this location the average high temperature is 73.3 °F (22.9 °C). The lowest recored high temperature was 56.8 °F (13.8 °C) in 1993 and the highest recored high temperature was 97.0 °F (36.1 °C) in 2017. The high temperature is usually* between 67.7 °F (19.8 °C) and 78.8 °F (26.0 °C). About a quarter of the time, the high temperature is less than 67.7 °F (19.8 °C), and another quarter of the time, the high temperature is greater than and 78.8 °F (26.0 °C). About 95% of the time, the high temperature has been between 57.1 °F (13.9 °C) and 89.5 °F (31.9 °C).

Low Temperatures

On September 21 in this location the average low temperature is 54.5 °F (12.5 °C). The lowest recored low temperature was 33.1 °F (0.6 °C) in 1991 and the lowest recored low temperature was 72.0 °F (22.2 °C) in 1965. The low temperature is usually* between 49.3 °F (9.6 °C) and 59.6 °F (15.3 °C). About a quarter of the time, the low temperature is less than 49.3 °F (9.6 °C), and another quarter of the time, the low temperature is greater than and 59.6 °F (15.3 °C). About 95% of the time, the low temperature has been between 39.6 °F (4.2 °C) and 69.3 °F (20.7 °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: