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CIMIS Data
Sky with zeros and ones across it The CIMIS Data page enables users to:
  • View daily and monthly sample reports;
  • Create and edit a user account;
  • Retrieve CIMIS data;
  • Read important information on CIMIS quality control;
  • Read detailed information on CIMIS data types, formats, and sizes;
  • View the weather station list.
CIMIS data can be accessed and retrieved free of charge. Although membership is not a requirement, access to data for Unregistered Users is limited to the Sample Reports. Registered Users have the privilege of accessing the entire CIMIS data set. Registration information is confidential and used by CIMIS staff for statistical reports and to provide better services. Therefore, we encourage users to register and create a CIMIS user account.

Note: CIMIS Date Ranges defaults to seven days (starting from yesterday) for hourly and daily reports, and twelve months (starting from last month) for monthly reports. These defaults can be changed by going into the My CIMIS tab and changing your preferences. These new preferences will become your defaults for all data reports generated afterwards, from both the Data and My CIMIS tabs.
Unregistered User
Registration Registration allows users to create their own user names and passwords. Personal information of members will not be compromised in any way and is used for statistical purposes only. You can edit your Registration and change your password in the My CIMIS Tab.
Sample Daily Report The Sample Daily Report provides a standard report of the previous the previous 7 days of data available from the CIMIS database.
Sample Monthly Report The Sample Monthly Report provides a standard report of the previous 12 months data available from the CIMIS database.
Registered User
Logon The Logon page allows you to access the CIMIS database by entering your user name and password. You will be disconnected from the CIMIS database if there is no activity for 10 consecutive minutes.
Hourly Hourly provides standard hourly and hourly by sensor data reports for selected weather station(s) and date range specified.
Daily Daily provides standard daily and daily by sensor data reports for selected weather station(s) and date range specified.
Daily ETo Variance The Daily ETo Variance provides a comparative report of ETo variance for selected station(s) and date range specified.
Monthly Monthly provides standard monthly data reports for the weather station(s) and date range specified.
Monthly Average ETo Monthly Average ETo report enables you to retrieve long-term averages of monthly ETo. The time period over which the data is averaged varies from station to station depending on how long the station has been active.
Quality Control
QC Overview QC Overview describes the CIMIS data quality control program and its purpose. The need for QC flags and their uses are also briefly discussed.
Current Flag Summary Current Flag Summary lists and describes quality control flags that CIMIS has been using since 1995.
Current Hourly Flags Current Hourly Flags contains lists of the hourly QC flags that have been in use since 1995 and describes the criteria used while assigning flags to the data. Descriptions of what the hourly flagging parameters are and what they represent is also presented.
Current Daily Flags Current Daily Flags contains lists of the daily QC flags that have been in use since 1995 and describes the criteria used while assigning flags to the data. Descriptions of what the daily flagging parameters are and what they represent is also presented.
Former Flag Summary Former Flag Summary lists and describes QC flags that existed prior to 1995. This is presented because the archived CIMIS data for years prior to 1995 still show former flags.
Former Hourly Flags Former Hourly Flags lists the hourly QC flags that were used prior to 1995 and describes the criteria used while assigning flags to the data.
Former Daily Flags Former Daily Flags lists the daily QC flags that were used prior to 1995 and describes the criteria used while assigning flags to the data.
More Info
Station List The Station List provides a listing of all CIMIS stations by station number, station name, county, status and detailed information about that station.
Data Types Data Types describes the various climatic data types available from CIMIS. These include weather measurements from CIMIS instrumentation and calculated weather conditions.
Data Formats Data Formats describes not only what types of reports, eg; hourly, daily, or monthly, standard or by sensor, but the data file formats such as HTML or CSV, that are available from the CIMIS web site Data section.
Data Size The Data Size provides information on the CIMIS data file size that users can retrieve at any given time.
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