September 20 - custom location - Weather History and Averages

High Temperatures

On September 20 in this location the average high temperature is 71.1 °F (21.7 °C). The lowest recored high temperature was 52.3 °F (11.3 °C) in 1962 and the highest recored high temperature was 88.0 °F (31.1 °C) in 1978. The high temperature is usually* between 65.8 °F (18.8 °C) and 76.4 °F (24.7 °C). About a quarter of the time, the high temperature is less than 65.8 °F (18.8 °C), and another quarter of the time, the high temperature is greater than and 76.4 °F (24.7 °C). About 95% of the time, the high temperature has been between 55.6 °F (13.1 °C) and 86.6 °F (30.3 °C).

Low Temperatures

On September 20 in this location the average low temperature is 53.8 °F (12.1 °C). The lowest recored low temperature was 30.4 °F (-0.9 °C) in 1956 and the lowest recored low temperature was 69.8 °F (21.0 °C) in 2021. The low temperature is usually* between 48.8 °F (9.3 °C) and 58.9 °F (14.9 °C). About a quarter of the time, the low temperature is less than 48.8 °F (9.3 °C), and another quarter of the time, the low temperature is greater than and 58.9 °F (14.9 °C). About 95% of the time, the low temperature has been between 39.2 °F (4.0 °C) and 68.4 °F (20.2 °C).

Frost

On September 20 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: