September 21 - custom location - Weather History and Averages

High Temperatures

On September 21 in this location the average high temperature is 87.3 °F (30.7 °C). The lowest recored high temperature was 59.0 °F (15.0 °C) in 2007 and the highest recored high temperature was 105.8 °F (41.0 °C) in 2003. The high temperature is usually* between 81.5 °F (27.5 °C) and 93.0 °F (33.9 °C). About a quarter of the time, the high temperature is less than 81.5 °F (27.5 °C), and another quarter of the time, the high temperature is greater than and 93.0 °F (33.9 °C). About 95% of the time, the high temperature has been between 70.6 °F (21.4 °C) and 104.0 °F (40.0 °C).

Low Temperatures

On September 21 in this location the average low temperature is 57.4 °F (14.1 °C). The lowest recored low temperature was 32.0 °F (0.0 °C) in 2023 and the lowest recored low temperature was 78.3 °F (25.7 °C) in 1939. The low temperature is usually* between 53.3 °F (11.8 °C) and 61.5 °F (16.4 °C). About a quarter of the time, the low temperature is less than 53.3 °F (11.8 °C), and another quarter of the time, the low temperature is greater than and 61.5 °F (16.4 °C). About 95% of the time, the low temperature has been between 45.4 °F (7.5 °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 0.0% 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: