September 21 - custom location - Weather History and Averages

High Temperatures

On September 21 in this location the average high temperature is 80.9 °F (27.2 °C). The lowest recored high temperature was 63.3 °F (17.4 °C) in 2010 and the highest recored high temperature was 108.3 °F (42.4 °C) in 1943. The high temperature is usually* between 76.4 °F (24.7 °C) and 85.4 °F (29.6 °C). About a quarter of the time, the high temperature is less than 76.4 °F (24.7 °C), and another quarter of the time, the high temperature is greater than and 85.4 °F (29.6 °C). About 95% of the time, the high temperature has been between 67.9 °F (19.9 °C) and 93.9 °F (34.4 °C).

Low Temperatures

On September 21 in this location the average low temperature is 61.2 °F (16.2 °C). The lowest recored low temperature was 47.7 °F (8.7 °C) in 1986 and the lowest recored low temperature was 80.6 °F (27.0 °C) in 2015. The low temperature is usually* between 58.5 °F (14.7 °C) and 63.9 °F (17.7 °C). About a quarter of the time, the low temperature is less than 58.5 °F (14.7 °C), and another quarter of the time, the low temperature is greater than and 63.9 °F (17.7 °C). About 95% of the time, the low temperature has been between 53.4 °F (11.9 °C) and 68.9 °F (20.5 °C).

Frost

On September 21 in this location expect the temperatures to drop below freezing for a risk of frost about 0.0% 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: