How to Read the Monthly Summary Form
Column 1 Day The day of the month.
Column 2 Max The day's high temperature.
Column 3 Min The day's low temperature.
Column 4 Avg The day's average temperature.
Column 5 Dep The average temperature's departure from normal.
Column 6a HDD Heating Degree Days (65 - Avg = # of HDD). Use when the average temperature (Avg) is less than 65.
Column 6b CDD Cooling Degree Days (Avg - 65 = # of CDD). Use when the average temperature (Avg) is greater than 65.
Column 7 Wtr The water equivalent of the day's precipitation.
Column 8 Snw The day's snowfall.
Column 9 Dpth The depth of the snow, measured at midnight. (Unavailable for most events.)
Column 10 Avg The average wind speed in miles per hour.
Column 11 Spd The fastest 2 minute wind speed (in mph).
Column 12 Dir The direction of the day's fastest 2 minute wind speed. Where 90 is a wind from the east, 360 a wind from the north, etc.
Column 13 Min Minutes of Sunshine. Not used!
Column 14 PSBL The percentage of possible minutes of sunshine.
Column 15 S-S No longer used!
Column 16 Wx Weather (wx) codes for the day.
1 = Mist
2 = Fog
3 = Thunderstorm
4 = Ice Pellets
5 = Hail / Snow Pellets
6 = Freezing Rain / Freezing Drizzle
7 = Widespread Dust / Sandstorm
8 = Haze
9 = Blowing Snow
X = Funnel Cloud
Column 17 Min The highest wind gust for the day (in mph).
Column 18 Day The direction of the day's peak wind gust. is the U.S. government's official web portal to all federal, state and local government web resources and services.