Weather

Indian Monsoon Data - Contains technical meteorological information, including maps and historic data. Also some data for the rest of the subcontinent.
http://www.monsoondata.org/

World Weather Information Service - Basic daily reports, annual temperature and precipitation information for the principal cities.
http://worldweather.wmo.int/066/m066.htm

NOAA NWS - India Weather - US government site provides hour-by-hour weather conditions for the past 24 hours for major cities and locations in the country.
http://weather.noaa.gov/weather/IN_cc.html

National Centre for Medium Range Weather Forecasting - Details of the center, and links to a variety of pages with weather forecasts.
http://www.ncmrwf.gov.in/

Weather Resource System for India - Current weather conditions, forecast, cloud images and meteorological analysis.
http://www.weather.nic.in/

Weather Underground: India - Temperature map for the country, also with temperature, pressure, humidity, and air conditions for a number of locations.
http://www.wunderground.com/global/IN.html

BBC Weather Centre - Country Guides: India - Provides climate and weather information, facts and statistics about the country, along with five-day forecasts for major cities.
http://www.bbc.co.uk/weather/world/country_guides/results.shtml?tt=TT002240

City Weather - Clickable map, shows four day forecasts for a number of cities across the country.
http://www.ncmrwf.gov.in/athiya_SPL1.htm

Weather.com - India - City-by-city weather reports and forecasts.
http://www.weather.com/common/drilldown/IN.html