IEM Computed Daily Summary of Observations

This page allows you to download the IEM computed daily summary of whatever observations the IEM collected for a given observation site. You can also download data from COOP networks with this interface, in which case the "daily" data are effectively the once-daily observations.Select network to download from:

 

Select period:

YearMonthDay
Start:
End:

Note: Values of 0.0001 inches are Trace Reports

station
Common identifier for the station.
day
Calendar date of the summary.
max_temp_f
Maximum Air Temperature [F].
min_temp_f
Minimum Air Temperature [F].
max_dewpoint_f
Maximum Dew Point [F].
min_dewpoint_f
Minimum Dew Point [F].
precip_in
Daily Precipitation [inch].
avg_wind_speed_kts
Average Wind Speed [knots]
avg_wind_drct
Average Wind Direction [deg]
min_rh
Minimum Relative Humidity [%]
avg_rh
Average Relative Humidity [%]: computed by time averaging the available reports, it is not average of the daily max/min.
max_rh
Maximum Relative Humidity [%]
climo_high_f
NCDC 1981-2010 Daily High Temperature Climatology [F]
climo_low_f
NCDC 1981-2010 Daily Low Temperature Climatology [F]
climo_precip_in
NCDC 1981-2010 Daily Precipitation Climatology [inch]
snow_in
Reported Snowfall [inch]
snowd_in
Reported Snow Depth [inch]
min_feel
Minimum "Feels Like" (either wind chill or heat index) temperature. The value is always at least the air temperature.
avg_feel
Average "Feels Like" (either wind chill or heat index) temperature. The value is always at least the air temperature. Value is a time weighted average.
max_feel
Maximum "Feels Like" (either wind chill or heat index) temperature. The value is always at least the air temperature.