September 20 - GROSSE ILE NAS - Weather History and Averages

Station: GROSSE ILE NAS (1945 to 1969)
Country: US
State: MI
Latitude: 42.1
Longitude: -83.167

High Temperatures

On September 20 in GROSSE ILE NAS the average high temperature is 71.9 °F (22.2 °C). The lowest recored high temperature was 54.0 °F (12.2 °C) in 1962 and the highest recored high temperature was 82.0 °F (27.8 °C) in 1955. The high temperature is usually^* between 66.7 °F (19.3 °C) and 77.1 °F (25.1 °C). About a quarter of the time, the high temperature is less than 66.7 °F (19.3 °C), and another quarter of the time, the high temperature is greater than and 77.1 °F (25.1 °C). About 95% of the time, the high temperature has been between 56.8 °F (13.8 °C) and 87.0 °F (30.5 °C).

Low Temperatures

On September 20 in GROSSE ILE NAS the average low temperature is 57.9 °F (14.4 °C). The lowest recored low temperature was 35.1 °F (1.7 °C) in 1956 and the lowest recored low temperature was 69.1 °F (20.6 °C) in 1965. The low temperature is usually^* between 53.0 °F (11.6 °C) and 62.9 °F (17.2 °C). About a quarter of the time, the low temperature is less than 53.0 °F (11.6 °C), and another quarter of the time, the low temperature is greater than and 62.9 °F (17.2 °C). About 95% of the time, the low temperature has been between 43.5 °F (6.4 °C) and 72.4 °F (22.4 °C).

Frost

On September 20 in GROSSE ILE NAS expect the temperatures to drop below freezing for a risk of frost about 0.0% 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:

GROSSE ILE NAS — Weather Bureau Army Navy (WBAN): 14856 — from year 1945 to 1969

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