Past Data & Files

Station Monthly Summaries learn more

Station Monthly Summaries

Monthly summaries are available for each Mesonet station. Data reflect measurements taken from midnight to midnight Central Standard Time (CST).

Most measurements require a minimum percentage of observations for the day to be included in the daily and monthly calculations. Total daily solar radiation is calculated if 99% of the observations for the site and day are available. Maximum wind gust, maximum heat index, and minimum wind chill are calculated if at least 1 observation is available for the day. All other variables require at least 90% of the observations to be computed.

For more information on monthly summaries, please visit the Monthly Summary description page.
Mesonet Long-Term Averages - Maps learn more

Mesonet Long-Term Averages - Maps

The Mesonet long-term averages utilize 15 years of daily data (e.g. daily average, daily maximum/minimum, or daily total) for every current and past Oklahoma Mesonet station. For a station's data to be used in one of the maps, at least 90% of the data must be valid during the respective period. Data from moved locations (e.g. "Norman - retired 2002" and "Norman") are not combined into a single station record. This method of calculating 15-year averages of weather data is also used by the U.S. Climate Prediction Center and has been found to be the best alternative to the World Meteorological Organization's 30-year averages (Wilks and Livezey 2013, Journal of Applied Meteorology and Climatology).

For more information on each of the variables, please view the Mesonet Long-Term Averages Variables page.
Mesonet Long-Term Averages - Graphs learn more

Mesonet Long-Term Averages - Graphs

The Mesonet long-term averages utilize 15 years of daily data (e.g. daily average, daily maximum/minimum, or daily total) for every current and past Oklahoma Mesonet station. For a station's data to be used in the graphs, at least 90% of the data must be valid during the respective period. Data from moved locations (e.g. "Norman - retired 2002" and "Norman") are not combined into a single station record. This method of calculating 15-year averages of weather data is also used by the U.S. Climate Prediction Center and has been found to be the best alternative to the World Meteorological Organization's 30-year averages (Wilks and Livezey 2013, Journal of Applied Meteorology and Climatology).

For more information on each of the variables, please view the Mesonet Long-Term Averages Variables page.

Data Files

Mesonet Data Files learn more

Mesonet Data Files

Data files can be provided on request by contacting datarequest@mesonet.org. Service fees may apply. Mesonet MDF and MTS files are space delimited files used to display data in WeatherScope. MDF files display data for all stations for a given time, while MTS files display data for 1 station for a given UTC day. This is the standard file format used for Mesonet data.

For more information on Mesonet's MDF/MTS files, please visit the MDF/MTS Files description page.
Current Observations (csv) learn more

Current Observations (csv)

The current observations CSV file is a comma seperated list of the most recent observations for each Mesonet station. Missing data, whether due to data or communications problem, are denoted by a space. Observations update every 5 minutes.

For more information about the current observation file, please visit the Current Observation CSV data description page.
Daily Data Retrieval learn more

Daily Data Retrieval

The daily data retrieval allows users to create their own data files by selecting the dates, stations, and variables of interest. Small requests are output on the screen. Larger requests are available via email. Values less than -990 indicate data are not available.

To obtain a comma-delimited daily file, follow the steps below:
1) Select the beginning month, day, and year from the drop down menus.
2) Select the ending month, day and year from the drop down menus.
3) Select the station(s) from the list box.
--Windows Users: To select a range of sites, hold down the Shift key and drag your cursor over the desired sites. To select multiple sites, hold down the Control key and click on individual sites.
--Mac Users: To select a range of sites, hold down the Shift key and drag your cursor over the desired sites. To select multiple sites, hold down the Command key and click on individual sites.
4) Select the variables you want to view.
--Windows Users: To select a range of sites, hold down the Shift key and drag your cursor over the desired variables. To select multiple variables, hold down the Control key and click on individual variables.
--Mac Users: To select a range of sites, hold down the Shift key and drag your cursor over the desired variables. To select multiple variables, hold down the Command key and click on individual variables.
5) Enter your e-mail address (required for large requests).
6) Click "Submit" to obtain your data.

For more information on daily summaries, please visit the Daily Summary description page.

Extremes

Daily Top 15 Lists learn more

Daily Top 15 Lists

The Daily Top 15 Lists displays the Warmest Maximum Temperatures, Coolest Maximum Temperatures, Warmest Minimum Temperatures Coolest Minimum Temperatures, Greatest Rainfall Totals, Sunniest Stations, and Windiest Stations across the Oklahoma Mesonet for the current day in progress. These lists are updated every five minutes.