Arkansas Weather
Forecasts, watches, warnings, and the most recently observed weather conditions for locations throughout Arkansas from the National Weather Service.
http://weather.noaa.gov/weather/AR_cc_us.html

NOAA National Weather Service
Warnings, news, forecasts and more for the United States.
http://www.nws.noaa.gov/

Online Weather Almanac
From USA Today, this site provides a variety of historical weather information for US and international cities.
http://www.usatoday.com/weather/walm0.htm

United States Interactive Climate Pages
This site from the NOAA Climate Diagnostics Center provides point and click climate information for US cities, as well as climate maps.
http://www.cdc.noaa.gov/USclimate/

Weather.com
A variety of weather and climate information from the Weather Channel.
http://www.weather.com/