Browse through the maps and graphs to see how temperature and precipitation normals vary by geographic location and by month. You'll notice that the mountains play a key role in defining different climate patterns for both temperature and precipitation.
The climate normals maps are generated using high resolution gridded data from PRISM. PRISM normals cover the period 1981 - 2010 and are derived from a digital elevation model and station observations that include NWS COOP, CoCoRaHS, and SNOTEL measurements.
Station climate normals graphs are generated for long-term National Weather Service COOP stations. COOP normals cover the period 1981 - 2010 and are provided by ACIS. Normals are calculated by NOAA's NCEI every ten years.
New! Monthly Precipitation Proportions
Explore these maps to learn how "important" precipitation is toward the annual total for
each month of the year.
Precipitation Normals
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual
Temperature Normals
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual
Select a station from the drop-down menu to access a station's history.
Only long-term stations that are currently reporting are included.
Station histories
include annual and monthly averages, and annual and monthly records, for temperature and
precipitation.
Averages are calculated using the station's entire period of record, so they will likely differ from the monthly normals displayed in the Maps and Graphs.
For more information on a station's extremes (including daily extreme values), visit the Extremes page. To access more data for a station, go to Data Access.