Look at the uk.sci.weather newsgroup faq at http://homepage.ntlworld.com/booty.weather/uswfaqfr.htm.Don't forget to look at the newsgroup itself!
MRF: For temperature, pressue, and winds (inferred) for up to the next ten days, see the Purdue model at http://weather.unisys.com/mrf/9panel/mrf_850_9panel_eur.html. I find the coloured temperature maps particularly useful. Very pretty. I use this site a lot, and it seems pretty reliable.
For rainfall, see http://grads.iges.org/pix/euro.pw.html
For a 4 day forecast, pretty maps, and much, much else, see http://www.onlineweather.com/
I am often asked "what is the weather like in such a place in such a month". For Britain, try this link first. It has a great deal of information about many UK locations.
For Britain and the rest of the world, try looking at:
and typing in a relevant city name.
For many good maps of Britain with things like average rainfall, temperature, number of days thunder and hail, sunshine, see http://www.metoffice.com/climate/uk/averages/19712000/mapped.html.
For a link to a listing of other weather stations, try:
I am also often asked "what was the weather like in such a place on such a date". If it's not in my severe weather pages, then I don't know! For Britain, try this link.
The BBC has quite a good web page at http://www.bbc.co.uk/weather/.
http://www.meto.gov.uk/satpics/latest_vis.jpg will give you another latest (but static) cloud photograph, and http://www.meto.gov.uk/ will get you round the met office in general.
http://www.ecmwf.int/ for the European Centre for medium range forecasts.
http://www.itu.rdg.ac.uk/rms/rms.html for the Royal Meteorological Society (of Britain).
http://www.torro.org.uk/ for the home page of TORRO, the Tornado and Storm Research Organisation.
http://www.meto.gov.uk/sec5/CR_div/UK_Climate/index.html for a link to the CET temperatures.
http://www.met-office.gov.uk/research/hadleycentre/CR_data/Monthly/HadEWP_act.txt for a link to the average rainfall.
http://www.nxdc.com/weather/ for general weather resources (US bias), but with some nice pictures - far more comprehensive than mine (at the moment ...)
http://www.weather.org.uk/resource/ukswxfaq.htm is the FAQ for the uk.sci.weather newsgroup - itself an essential read for all weather freaks.
Want to compute sunrise and sunset times? Try http://aa.usno.navy.mil/AA/data/docs/RS_OneYear.html.
Need legal help about the weather in Scotland? I'm often approached about such things, and have no expertise, but found http://www.forensicmet.co.uk/ useful.
People should know what to do in severe weather. This site http://www.aaastateofplay.com/staying-safe-outdoors-in-severe-weather/ is useful.
http://www.dragoon.net/weather/ for a compendium of pictures (many more than mine).
http://www.nottingham.ac.uk/~cczsteve/satshow.html has a groovy animated effect that shows clouds moving over northern Europe over the last 24 hours.
http://www-imk.physik.uni-karlsruhe.de/~gmueller/pics/Rsfloc.gif is great for seeing thunderstorms across Europe. (A particular Godsend for Mac users, who cannot use the excellent thunderstorm activity viewing software only available for PCs.)
http://www.meto.gov.uk/datafiles/PastWx/UKRR_1200.gif for midday rainfall radar.
http://www.sat.dundee.ac.uk/pdus.html for the latest cloud images.
http://dspace.dial.pipex.com/lc/halo/halosim.htm and http://covis.atmos.uiuc.edu/guide/optics/optics.html for information on atmospheric effects (rainbows, halos, coronas, sun pillars, sun dogs, sunsets etc).
http://www.met.reading.ac.uk/~brugge/index.html#top has many, many other links.
http://sidlawweather.co.uk/ for my neighbour's John Brush's on-line weather station in Auchterhouse, about three miles from here.
http://www.lyneside.demon.co.uk I just like this one.
http://www.ukweather.freeserve.co.uk/ ditto ditto.
http://www.brixworth.demon.co.uk/weather/ for the weather in Northamptonshire (Pitsford Hall).
http://www.booty.demon.co.uk/metinfo/snowxmas.htm Want to know everything there is to know about a White Christmas?
http://www.richardjwild.co.uk/ For information on snowfall events and blizzards - in fact for everything you want to know about snow.
http://dspace.dial.pipex.com/lc/halo/halosim.htm Want to find out more about haloes, sun pillars, and atmospheric phenomena? Then this is the site for you.
http://www.booty.demon.co.uk/metinfo/uswfaq.htm for the uk.sci.weather faq - all the answers to many of your questions. It makes sense to check here before posting a question to uk.sci.weather.
http://www.cru.uea.ac.uk/~mikeh/datasets/uk/ Lots of links to data for British weather here, including another source for the Central England Temperature series.
http://www.prodata.co.uk/weather/ for useful information about automatic weather stations (AWSs), and a groovy display of the current weather in Ely (Cambs.)
http://www.met.rdg.ac.uk/~brugge/diary.html for a diary of recent events in the British weather.
http://www.booty.demon.co.uk/metinfo/wxevents.htm for a site rather like mine, providing a summary of extreme weather events in Britain, starting in 55BC!
http://www.cyber-space.co.uk/johntherock/tornado.htm about storm chasing - also has some superb photographs.
http://members.fortunecity.com/newarkweather/ Ian Lyall's site - records from Newark and much more of interest besides./P>
http://www.exmoor-nationalpark.gov.uk/About_Exmoor/ExmoorLynmouthfloods1952.htm Chris Arnold's site - only a few miles from mine.
http://www.carseweather.co.uk/newarkweather/ Chris Arnold's site - just 2.5 miles south of my old Pitroddie site./P>
http://www.warchangesclimate.com/ for an interesting perspective on very cold winters and the World Wars.
http://homepage.ntlworld.com/booty.weather/climate/wxevents.htm for more on historical weather events.http://www.warchangesclimate.com/
Please let me know if any of these links fail to work, or change, or if you have other suggestions.
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