December 21 - custom location - Weather History and Averages

High Temperatures

On December 21 in this location the average high temperature is 64.7 °F (18.2 °C). The lowest recored high temperature was 47.8 °F (8.8 °C) in 1990 and the highest recored high temperature was 84.0 °F (28.9 °C) in 2020. The high temperature is usually* between 60.6 °F (15.9 °C) and 68.7 °F (20.4 °C). About a quarter of the time, the high temperature is less than 60.6 °F (15.9 °C), and another quarter of the time, the high temperature is greater than and 68.7 °F (20.4 °C). About 95% of the time, the high temperature has been between 52.9 °F (11.6 °C) and 76.5 °F (24.7 °C).

Low Temperatures

On December 21 in this location the average low temperature is 44.5 °F (7.0 °C). The lowest recored low temperature was 9.9 °F (-12.3 °C) in 1995 and the lowest recored low temperature was 66.9 °F (19.4 °C) in 1960. The low temperature is usually* between 40.2 °F (4.6 °C) and 48.9 °F (9.4 °C). About a quarter of the time, the low temperature is less than 40.2 °F (4.6 °C), and another quarter of the time, the low temperature is greater than and 48.9 °F (9.4 °C). About 95% of the time, the low temperature has been between 32.0 °F (0.0 °C) and 57.1 °F (13.9 °C).

Frost

On December 21 in this location expect the temperatures to drop below freezing for a risk of frost about 2.5% 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: