December 21 - custom location - Weather History and Averages

High Temperatures

On December 21 in this location the average high temperature is 34.7 °F (1.5 °C). The lowest recored high temperature was 5.0 °F (-15.0 °C) in 1989 and the highest recored high temperature was 62.1 °F (16.7 °C) in 1967. The high temperature is usually* between 27.7 °F (-2.4 °C) and 41.7 °F (5.4 °C). About a quarter of the time, the high temperature is less than 27.7 °F (-2.4 °C), and another quarter of the time, the high temperature is greater than and 41.7 °F (5.4 °C). About 95% of the time, the high temperature has been between 14.4 °F (-9.8 °C) and 54.9 °F (12.7 °C).

Low Temperatures

On December 21 in this location the average low temperature is 20.7 °F (-6.3 °C). The lowest recored low temperature was -13.0 °F (-25.0 °C) in 1989 and the lowest recored low temperature was 42.3 °F (5.7 °C) in 2015. The low temperature is usually* between 12.5 °F (-10.8 °C) and 29.0 °F (-1.7 °C). About a quarter of the time, the low temperature is less than 12.5 °F (-10.8 °C), and another quarter of the time, the low temperature is greater than and 29.0 °F (-1.7 °C). About 95% of the time, the low temperature has been between -3.2 °F (-19.5 °C) and 44.6 °F (7.0 °C).

Frost

On December 21 in this location expect the temperatures to drop below freezing for a risk of frost about 82.2% 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: