Volgograd (Russian: Волгогра́д vuhl-gah-GRAHD) used to be called Stalingrad. It lies along the west bank of the Volga River in Southern Russia. It was the scene of one of the most important and bloodiest battles of the Second World War.
Volgograd has a humid continental climate with moderate rainfall throughout the year measuring 406mm (15 inches on average). The city has large seasonal variations, due to its very strong continentality. Winters are cold (though above average for Russian standards) and the average February temperature is -6.6°C (20.1°F) while highs usually remain below freezing and lows hover around -10°C (13°F). There is nothing to protect the city from the freezing winds originating in the interior of Siberia and temperatures may fall down to -20°C (-4°F). Snow is a common sight during these months, but westerly winds are able to raise temperatures above freezing allowing rain to fall on average 6 days in January. The lowest recorded temperature is -33°C (-27°F). Summers on the other hand range from pleasantly warm to hot on some days. The average July temperature is 23.7°C (74.7°F). The city does enjoy some protection from the Caucasus Mountains which prevent heat waves from Iran to emerge in the Russian Plains, but heat waves originating in Africa do occasionally arrive here and cause daytime temperatures to rise above 35°C (95°F). The highest recorded temperature is 42.7°C (108.9°F). Inarguably, the best part of the year to visit Volgograd is May and September when it's not cold nor hot and rainfall is scarce.
Serving the city is Volgograd International Airport (Международный Аэропорт Волгоград) (IATA: VOG)  which despite its name mostly has domestic routes, Moscow and Saint Petersburg being the two major destinations. International connections are available to Munich and Yerevan and operated by RusLine . There are marshrutkas and busses leaving from Komsomoslkaya Street every 5 to 10 minutes. One way fare to the airport (or from the airport) is 17Rubs (0,33USD). Just check for Line 6, both bus and marshrutka. They are not very friendly with regards of luggage, they'll mostly ask you to pay a 2nd ticket for your bags. Trip takes about 25 minutes.
Wikitravel has a guide to Trans-Siberian Railway.
Volgograd is a major railway junction with good connections from Moscow (20 h), Saint Petersburg (34 h) and most other large cities in western Russia, tickets cost between 3-5000 RUB for a second class sleeper. In the other direction, trains come all the way from Irkutsk (92 h) in Siberia. International connections are limited but several central asian cities such as Bishkek (77 h), Baku (30 h) Dushanbe (72 h), Tashkent (60 h) as well as the two major cities in Kazakstan, Almaty (68 h) and Astana (52 h) have departures atlest once a week. Directs routes from European countries is scarce, the usual route involves a change of trains in Moscow however there is a few trains from Brest (45 h) via Minsk (40 h), Kiev (29 h) and from Sofia (61 h) via Bucharest (49 h) and Chisinau (36 h) that does not require a change. These trains usually departs 3-4 times a week.
The city stands at the east end of the Volga-Don Canal, opened in 1952 to link the two great rivers of Southern Russia. River cruises down the Volga operate during the summer months (early May to late September). Dozens of boats operated by different companies run from Moscow to Astrakhan passing by Volgograd. One way or return cruises may be reserved to/from practically any city along the Volga. Turflot  and Infoflot  offer tours. Prices starts a RUR 8,000 without meals and RUR 15,000 with meals.
Volgograd's public transport system includes a light rail service known as the Volgograd Metrotram.