Monthly Climatological Summary
Norman 3SE, Cleveland Co., OK (Lat 35^10'57"N, Lon 97^25'27"W, elev 1130)
September 2002
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Temperature Precipitation Snow AM PM
Max Min Water Snow Depth Wx Wx
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01 92.1 66.7 .00 0.0 0 SCT SCT
02 95.4 70.0 .00 0.0 0 SCT BKN
03 95.2 70.9 .00 0.0 0 SKC FEW
04 95.9 69.3 .00 0.0 0 SKC BKN
05 94.6 70.9 .00 0.0 0 BKN BKN
06 94.6 71.4 .00 0.0 0 SCT SCT
07 94.1 68.2 .00 0.0 0 SKC SCT
08 76.8 69.3 .42 0.0 0 RA OVC
09 84.6 69.1 .25 0.0 0 -RA SCT
10 88.2 67.3 .00 0.0 0 BKN SCT
11 88.5 66.2 .00 0.0 0 SKC BKN
12 89.2 66.2 .00 0.0 0 BKN BKN
13 91.6 69.3 .00 0.0 0 BKN BKN
14 84.7 65.1 1.21 0.0 0 +TSRA +TSRA
15 78.6 64.0 .00 0.0 0 OVC SCT
16 81.9 58.3 .00 0.0 0 BKN SCT
17 88.5 63.0 .00 0.0 0 SKC SCT
18 92.3 69.6 T 0.0 0 SCT -TSRA
19 72.1 59.9 1.23 0.0 0 +TSRA OVC
20 80.8 54.3 .00 0.0 0 SKC SKC
21 84.2 55.6 .00 0.0 0 SKC SCT
22 74.1 58.3 .00 0.0 0 BKN SKC
23 76.3 52.5 .00 0.0 0 SKC SKC
24 77.0 52.0 .00 0.0 0 SKC SKC
25 82.6 50.7 .00 0.0 0 SKC SCT
26 82.4 57.2 .00 0.0 0 SKC SCT
27 80.8 58.5 .00 0.0 0 SKC SKC
28 89.1 61.5 .00 0.0 0 SCT SKC
29 87.3 61.9 .00 0.0 0 SCT SCT
30 87.4 64.6 .00 0.0 0 BKN SCT
KEY TO AM/PM WX: SKC - sky clear, FEW - few clouds, SCT -
partly cloudy, BKN - mostly cloudy, OVC - overcast, RA -
rain, TSRA - thunderstorm with rain.
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Means and Totals for September 2002
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Average Maximum Temperature: 86.0
Average Minimum Temperature: 63.4
Mean Temperature: 74.7
Maximum Temperature: 95.9 (9-04-02)
Minimum Temperature: 50.7 (9-25-02)
Days with max temperature 90.0F+: 9 Year: 66
Days with max temperature <32.0F: 0 Year: 4
Days with min temperature <32.0F: 0 Year: 46
Days with min temperature <0.0F: 0 Year: 0
Precipitation: 3.17 Year: 24.30
Greatest one-day precipitation: 1.23 (9-19-02)
Snowfall: 0.0 Year: 2.4
Greatest one-day snowfall: 0.0
Maximum snow depth at midnight: 0
Days with measureable pcpn: 4 Year: 63
Days with pcpn 1.00"+: 2 Year: 8
Days with measureable snowfall: 0 Year: 3
Days with snowfall 1"+: 0 Year: 1
Days with glaze ice: 0 Year: 2
Days with damaging wind: 0 Year: 4
Days with hail: 0 Year: 1
Days with thunderstorms: 3 Year: 39
Days with fog: 0 Year: 11
NOTICE: All temperatures are in degrees Fahrenheit and all precipitation values in inches. Snowfall totals denoted by an asterisk indicate hail.
Summary....Although September is usually one of Central Oklahoma's stormier months, the area saw relatively few days with precipitation or thunderstorms in Sep 2002. On the days it did rain, it came down hard. Thunderstorms during the early morning and early evening on the 14th combined to drop over an inch of rain. The storm of the month hit right at midnight on the 19th, and was accompanied by an exceptionally intense display of lightning. The power poles outside my apartment were struck repeatedly during this storm, resulting in three separate power surges between 12:25 and 12:35. This storm swept away the haze and humidity which had been hanging over the area all month, and was followed by several days of clear weather and low humidity. This cooler, drier weather lasted for about a week as warmer, more humid air moved back north into the area the final weekend of the month.
Turlock CA had a trace of rain on the 4th and the 6th, which snapped the 106 day zero rainfall streak. The streak of days without measureable rainfall still stands, and was at 133 days at the end of the month.