U.S. Monthly Extremes - Data Tables

Find the dates and values for record-setting conditions at weather stations. Find data for records such as the highest and lowest temperatures, the most rain or snow, and the number of days below or above selected temperatures within the period of record.

Where do these data come from?

Measurements are collected by the U.S. Cooperative Observer Network (COOP), which typically has about 8,000 stations operating in any one year. Monthly extremes are extracted from the U.S. COOP Summary of the Month dataset (DSI-3220).

• How-To

  What can I do with these data?

  • Find the hottest, coldest, snowiest, wettest, and driest months on record at any COOP weather station.
  • Compare extreme values among various stations.

  How do I use the site?

  • Zoom in and pan to display the part of the world for which you want data.
  • Use one of the Selection tools on the map to bring up a text list of stations within your region of interest.
  • In the list of stations, check the box in the first column of your station of interest, and then click Get Selected Data.
  • Select your variable of interest under Extremes Products.
  • To check for records in the entire period of record, use the Date Selector on the left. Set the From date to the first year of record and the To date to the final year of record.
• Data Access
  Data Format(s)

  TXT (ASCII)

  Access Type	Link & Description
  Download	U.S. Monthly Extremes Obtain single-parameter data tables showing the most extreme values among a set of temperature and precipitation parameters.

• Technical
  Data Type

  Land-based station

  Essential Climate Variables

  Air temperature,

  Resolution

  Horizontal resolution(s)

  • Point Resolution

  Temporal resolution(s)

  Science Organization

  NOAA National Weather Service