September 21 - custom location - Weather History and Averages

High Temperatures

On September 21 in this location the average high temperature is 85.8 °F (29.9 °C). The lowest recored high temperature was 68.0 °F (20.0 °C) in 1988 and the highest recored high temperature was 108.3 °F (42.4 °C) in 1943. The high temperature is usually* between 80.0 °F (26.6 °C) and 91.6 °F (33.1 °C). About a quarter of the time, the high temperature is less than 80.0 °F (26.6 °C), and another quarter of the time, the high temperature is greater than and 91.6 °F (33.1 °C). About 95% of the time, the high temperature has been between 68.8 °F (20.5 °C) and 102.8 °F (39.3 °C).

Low Temperatures

On September 21 in this location the average low temperature is 60.6 °F (15.9 °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 57.3 °F (14.0 °C) and 63.9 °F (17.7 °C). About a quarter of the time, the low temperature is less than 57.3 °F (14.0 °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 51.0 °F (10.6 °C) and 70.1 °F (21.2 °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: