September's high temperatures started out above normal, then cooled off a bit. During the middle of the month, the temperatures rose then cooled off, then rose once again by the end of the month.  The month's high temperature was 90 degrees, which ocurred on the 14th and was eight degrees from the record. A new record was made on the 28th of 98 - the old record was 92 set in 1967. In all, the high temperature was about two degrees higher than usual. The low temperatures were just about normal. The middle of the month was a little below normal. No low temperature records were set.

We recieved 1.01 inches of rain., about half an inch below normal. This is the fifth month in a row since February that we have received below normal rainfall. There were no record setting days of rainfall this month. Even with the shortage of precipitation, we are still above normal from where we should be this time of year. The 2002-2003 water year had no shortage of rain when the end of the 12 month period ended.

Table 1 - daily data recorded at the Hyslop Experiment Station.

Table 2 - access to the daily data recorded at the Corvallis Agri-Met Automated Station. You choose the station and parameters.

Summary:

Parameter                 Observed   Dep.*   Parameter                       Observed   Dep.*
 
Average maximum temperature  68.03     4.6    Days with measurable precip.      9        -0.9   
                                                                         
Average minimum temperature  39.1      0.8    Days with .10" or more precip.    3        +0.4    
                                                                       
Monthly precipitation        0.72    -0.49    Days with .50" or more precip.    0        -0.9    
                                                                                    
Growing degree days @ 50F    430      +80     Days with 1" or more precip.      0        -0.2       
                                                                   
* departure from 1971-00 normal

Looking ahead to October:

Maxima rise to about 65°
Minima rise to about 42°
Average precipitation is 3.02 inches
There are an average of 12 days with measurable precipitation

Oregon Climate Service

George H. Taylor, Oregon State Climatologist

Wayne P. Gibson, Programmer/GIS mngr.

Mandy Matzke, Research Asst./Manager of Data Services

Cadee Hale, Publications Assistant

Melanie Mitchell, Undergraduate Assistant

Wolf Read, Undergraduate Assistant

Emily Gibson, Student Assistant

Kelsey Kuykendall, Undergraduate Assistant

Oregon Climate Service, Strand 316,                                  Phone: (541) 737-5705  
Oregon State University                                                      Fax: (541) 737-5710   
Corvallis, Oregon  97331                                                     E-mail: oregon@oce.oregonstate.edu   
                                                                             Web: http://www.ocs.oregonstate.edu