Some of our online systems will be unavailable today (Tuesday, Sept. 27) beginning at 4:30 pm ET. We anticipate downtime to last about an hour. We apologize for this inconvenience.
Cooperative Observer Network (COOP)
Original COOP Observation Forms
Daily observations provided on handwritten or computer-generated forms. These may include remarks or additional information supplied by the observer. Available one month at a time.
COOP Data with a 24-hour Lag
Electronically generated and available for more than 85% of COOP stations. Data do not include remarks and additional information supplied by the observer. Generally available within 24 hours of observation.
- FTP: 15-Minute Precipitation (3260)
- FTP: Hourly Precipitation (3240)
Global Historical Climatology Network - Daily (GHCND)
GHCN-Daily is the official archived dataset, and it serves as a replacement product for older NCEI-maintained datasets that are designated for daily temporal resolution (i.e., DSI 3200, DSI 3201, DSI 3202, DSI 3205, DSI 3206, DSI 3208, DSI 3210, etc.).