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College Station Monthly Summary: September 2009

September 2009 brought much needed rain to Bryan/College Station and for that matter most of the Brazos Valley. Much of the rain fell from the 12th-13th when an upper level low brought organized precipitation to the area for the first time in quite a while. The upper level low was quite persistent, finally ending a streak of six consecutive days of measurable precipitation on the 15th. A strong cold front marched through the area right around the time of the autumnal equinox. Considering the sweltering summer in the Brazos Valley, it was only fitting that the high on the 21st was 94°F, the last full day of summer. The first full day of autumn, the 23rd, saw a high of only 70°F. Overall, maximum temperatures were much cooler than normal with minimum temperatures a bit above normal. A lower spread than normal spread between high and low temperatures indicated a cloudier and wetter than normal pattern. Rainfall was almost twice the normal September monthly total and 11 days in the month had measurable precipitation.

  Daily Temperature Daily Precipitation Monthly Temperature Summary
Day Maximum Minimum *Departure Total Mean Value *Departure
1 93°F 71°F ‑1°F   Maximum 87.3°F ‑3.6°F
2 96°F 71°F +0°F   Minimum 70.1°F +1.6°F
3 100°F 73°F +4°F T Average 78.7°F ‑1.0°F
4 89°F 72°F ‑2°F T Degree Days Total *Departure
5 92°F 73°F +0°F   Heating 0 0
6 98°F 72°F +3°F   Cooling 416 ‑24
7 98°F 72°F +3°F   Numberof Days: Total *Departure
8 96°F 72°F +2°F   Maximum ≥ 90°F 12 ‑5
9 88°F 74°F 0°F 0.17" Maximum ≤ 32°F 0 0
10 90°F 73°F +0°F 1.17" Minimum ≤ 32°F 0 0
11 87°F 73°F ‑1°F 1.68"  
12 76°F 73°F ‑6°F 0.76" Monthly Precipitation Summary
13 88°F 73°F +0°F 0.76" Precipitation Value *Departure
14 80°F 72°F ‑4°F 0.03" Monthly Total 7.42" +3.51"
15 82°F 72°F ‑3°F   Year-to-date Total 24.48" ‑4.56"
16 84°F 69°F ‑4°F   Days ≥ 0.01" 11 +3
17 80°F 71°F ‑4°F 0.19"  
18 83°F 71°F ‑2°F   Monthly Extremes
19 88°F 70°F 0°F   Extreme Value Date(s)
20 91°F 72°F +2°F   Highest Temperature 100°F 3rd
21 94°F 74°F +6°F   Lowest Temperature 60°F 23rd, 24th
22 79°F 65°F ‑6°F 1.75" Max. 24-hour Precip. 2.37" 11th-12th
23 70°F 60°F ‑13°F 0.20" Maximum Wind Gust 43 mph 10th
24 72°F 60°F ‑12°F 0.37"  
25 85°F 63°F ‑3°F   Record Book for September
26 88°F 70°F +2°F   Highest Temperature 112°F 2000
27 92°F 70°F +4°F   Lowest Temperature 42°F 1942
28 93°F 75°F +8°F T Highest Minimum 82°F 1916
29 80°F 62°F ‑5°F 0.34" Lowest Maximum 62°F 1985
30 87°F 65°F 0°F   Wettest Month 12.13" 1958
  Driest Month 0.00" 1947
  Wettest 24 Hours 6.83" 1896
"T" indicates daily precipitation ≤ 0.005".
BOLDFACE indicates an extreme daily value for the month.
ITALICS indicates a daily record was set or tied.
*Departure from the 1971‑2000 normal.

*New Records Set

Day Parameter Value Old Record Year
No new records were set or tied in September 2009.

*Near Records Set

Day Parameter Value Record Year
12th Tied 2nd lowest maximum temperature 76°F 76°F 1998
23rd Tied 2nd lowest maximum temperature 70°F 70°F 1919
24th Tied 3rd lowest maximum temperature 72°F 70°F 1932
28th Tied 3rd highest minimum temperature 75°F 78°F 1959
*NOTE: Records from 1910 through July 1951 are based on observations taken at the Texas Agricultural
Experiment Station main farm located 7 miles SW of College Station. Records from August 1951 through
the present are based on observations taken at Easterwood Field.

October Normals for College Station

Beginning of the month: 86°F/64°F Monthly precipitation: 4.22"
Middle of the month: 82°F/59°F Precipitation days: 6
End of the month: 76°F/54°F Days ≥ 90°F:  3
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