Climatology

Region

Station: Search for a single station.
You can enter a station name or ID.
Use the Station Finder to find a station name or ID.
Gridpoint: Search for a single grid point.
Enter a Lon,Lat coordinate or
Use the map interface by dragging the marker to find your location.

Grid

SEE GRIDDED DATASETS

Year Range
Start and end year of the request. Format yyyy.

Variables

All of those below
Temperature, Precipitation, Snow and Degree Day statistics.
Temperature
Max/Min/mean Temperatures for each month as well as dates when lowest/highest values occurred.
The last for columns list the number of days of exceedance of the most common thresholds:
Max Temp >=90F, <=32F, Min Temp <=32F, <=0F
Precip/Snowfall
Mean, Highs and Lows, Mean Extremes and
Number of days exceeding 0.01In, 0.10In, 0.50In, 1.0In.
Temp/Precip/Snow
Temperature Statistics as above as well as Mean and Highs for Precipitation and Snowfall.
Degree Days
- Heating Degree Days Base Temperatures: 65F, 60F, 57F, 55F, 50F
- Cooling Degree Days Base Temperatures: 55F, 57F, 60F, 65F, 70F
Growing Degree Days
- Growing Degree Days Base Temperatures: 40F, 45F, 50F, 55F, 60F
- Corn Degree Days Base Temperatures: 50F

Units
Data can be obtained in metric or English units.

Note: degree day calculations are preformed
with base temperatures in Fahrenheit.

English:
  Temperatures in Fahrenheit
  Precipitation/Snow/Pan Evaporation in Inches
  Wind Movements in Miles
Metric:
Note: native database units are English.
If you choose metric, be aware that data values loose precision
since they are converted from English units and will be rounded.
  Temperatures in Celsius
  Precipitation/Snow/Pan Evaporation in Millimiter
  Degree Days: °C HDD = (5/9) x (°F HDD)
  Wind Movements in Kilometers

Max Missing Days The number of maximum missing days allowed in a month.
Months with more than this number of days missing will be omitted from the analysis.