Climatology Resources:
These resources are grouped first by national links, then sites for Virginia, then links for southwest Virginia, including Blacksburg.
National/International
- Online Severe Weather Climatology - select a station, then information centered on that radar site will be displayed.
- Severe Thunderstorm Climatology First select the type of severe weather, then clink anywhere on the map. A graph will come up with the probability of this event vs. the day of the year.
- Normal Temperature and Precipitation U.S. Climate Normals from the National Climatic Data Center
- Climatology of the U.S. Maps of Annual 1961-1990 Normal Temperature, Precipitation and Degree Days
- Color Maps of U.S. Normals Monthly Temperature, Precipitation, Heating and Cooling Degree Days
- Wind Climatology for the U.S. Data from 1930-1996 for several locations from each state in the U.S.. The table lists wind direction, wind speed, and peak gusts for each month.
- Wind Energy of the U.S. links to maps and tables for the entire U.S. and by region
- Jet Stream - Online School for Weather - Climate While the weather varies from day-to-day at any particular location, over the years, the same type of weather will reoccur. The reoccurring "average weather" found in any particular place is called climate.
German climatologist and amateur botanist Wladimir Köppen (1846-1940) divided the world's climates into several major categories based upon general temperature profile related to latitude. This site describes each climate category and has a map of the major categories across the U.S. - Climates of the World Maps and tables by continent. This includes average temperature and precipitation data.
Virginia
- Frost/Freeze Data Spring dates for last frost/freeze and Fall dates for first frost/freeze for all cooperative observation locations in Virginia
- Monthly Station Climate Summaries for Virginia - for 69 stations around Virginia
- Virginia Climate Normals - data for 131 cooperative stations in Virginia. Temperature data starts on page 7, precipitation data begins on page 11
- Virginia Average Precipitation - 1895-2008 Average for the state in a table by month.
- Virginia Average Temperature 1895-2008 Average for the state in a table by month
- Climate Summaries for Virginia Click on any dot on the map a get a table with the average high temperature, the average low temperature, precipitation, and snowfall by month.
- Snow Climatology for Virginia Select any station in Virginia then under 1. General Statistics. Snowfall, select Monthly and Seasonal Total Snowfall Amount.
- Virginia anuual average wind power black & white map
Virginia State Climatology Office is (804) 924–0548
Blacksburg/Southwest VA
- Blacksburg Climatology tables with temperature, precipitation, snow, and freeze data for Blacksburg, VA
- Monthly Snowfall for Blacksburg table with Monthly and Seasonal Total Snowfall Amounts
Figure 1 Dates of the last freeze in the spring -90% of the time
Figure 2 Dates of the first frost in the fall – 90% of the time
Figure 3 Days each month with dense fog (visibility less than one-quarter mile) in Roanoke, VA
Figure 4 Days each year with dense fog (visibility less than one-quarter mile) in Roanoke, VA - 1977 to 2002
