December 21 - custom location - Weather History and Averages

High Temperatures

On December 21 in this location the average high temperature is 39.7 °F (4.3 °C). The lowest recored high temperature was 12.2 °F (-11.0 °C) in 1999 and the highest recored high temperature was 82.9 °F (28.3 °C) in 1984. The high temperature is usually* between 28.5 °F (-2.0 °C) and 50.9 °F (10.5 °C). About a quarter of the time, the high temperature is less than 28.5 °F (-2.0 °C), and another quarter of the time, the high temperature is greater than and 50.9 °F (10.5 °C). About 95% of the time, the high temperature has been between 7.1 °F (-13.8 °C) and 72.2 °F (22.3 °C).

Low Temperatures

On December 21 in this location the average low temperature is 24.6 °F (-4.1 °C). The lowest recored low temperature was -7.1 °F (-21.7 °C) in 2008 and the lowest recored low temperature was 71.1 °F (21.7 °C) in 1988. The low temperature is usually* between 13.3 °F (-10.4 °C) and 35.9 °F (2.2 °C). About a quarter of the time, the low temperature is less than 13.3 °F (-10.4 °C), and another quarter of the time, the low temperature is greater than and 35.9 °F (2.2 °C). About 95% of the time, the low temperature has been between -8.3 °F (-22.4 °C) and 57.4 °F (14.1 °C).

Frost

On December 21 in this location expect the temperatures to drop below freezing for a risk of frost about 67.1% 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: