September 17 - SAN DIEGO/MONTGOMER - Weather History and Averages

Station: SAN DIEGO/MONTGOMER (1973 to 1990)
Country: US
State: CA
Latitude: 32.817
Longitude: -117.133

High Temperatures

On September 17 in SAN DIEGO/MONTGOMER the average high temperature is 77.4 °F (25.2 °C). The lowest recored high temperature was 70.0 °F (21.1 °C) in 1978 and the highest recored high temperature was 97.0 °F (36.1 °C) in 1979. The high temperature is usually^* between 72.9 °F (22.7 °C) and 81.9 °F (27.7 °C). About a quarter of the time, the high temperature is less than 72.9 °F (22.7 °C), and another quarter of the time, the high temperature is greater than and 81.9 °F (27.7 °C). About 95% of the time, the high temperature has been between 64.4 °F (18.0 °C) and 90.4 °F (32.5 °C).

Low Temperatures

On September 17 in SAN DIEGO/MONTGOMER the average low temperature is 63.0 °F (17.2 °C). The lowest recored low temperature was 55.9 °F (13.3 °C) in 1977 and the lowest recored low temperature was 70.0 °F (21.1 °C) in 1979. The low temperature is usually^* between 60.0 °F (15.6 °C) and 66.0 °F (18.9 °C). About a quarter of the time, the low temperature is less than 60.0 °F (15.6 °C), and another quarter of the time, the low temperature is greater than and 66.0 °F (18.9 °C). About 95% of the time, the low temperature has been between 54.4 °F (12.4 °C) and 71.6 °F (22.0 °C).

Frost

On September 17 in SAN DIEGO/MONTGOMER 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:

SAN DIEGO/MONTGOMER — Integrated Surface Dataset (ISD) station ID: 722901 — from year 1973 to 1989

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