May 21 - custom location - Weather History and Averages

High Temperatures

On May 21 in this location the average high temperature is 69.2 °F (20.7 °C). The lowest recored high temperature was 46.9 °F (8.3 °C) in 2025 and the highest recored high temperature was 96.1 °F (35.6 °C) in 1985. The high temperature is usually* between 62.8 °F (17.1 °C) and 75.6 °F (24.2 °C). About a quarter of the time, the high temperature is less than 62.8 °F (17.1 °C), and another quarter of the time, the high temperature is greater than and 75.6 °F (24.2 °C). About 95% of the time, the high temperature has been between 50.6 °F (10.3 °C) and 87.8 °F (31.0 °C).

Low Temperatures

On May 21 in this location the average low temperature is 50.6 °F (10.4 °C). The lowest recored low temperature was 28.4 °F (-2.0 °C) in 2002 and the lowest recored low temperature was 78.1 °F (25.6 °C) in 1991. The low temperature is usually* between 45.4 °F (7.4 °C) and 55.9 °F (13.3 °C). About a quarter of the time, the low temperature is less than 45.4 °F (7.4 °C), and another quarter of the time, the low temperature is greater than and 55.9 °F (13.3 °C). About 95% of the time, the low temperature has been between 35.4 °F (1.9 °C) and 65.8 °F (18.8 °C).

Frost

On May 21 in this location expect the temperatures to drop below freezing for a risk of frost about 0.8% 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: