ive worked in heavy rain,snow,ice,strong wind,hailstone etc but i dont usually if its that bad unless its a commercial job.
i seem to remember during the snow last year most guys had a few weeks off.me included.i did start doing a few half days though after a few weeks off.albeit with a trad pole(no wfp)due to it being -2 in the afternoon!!

most rainy days are showers so i crack on.on the washout full on rainy ones i dont bother and enjoy the time off.
guys who havent started already.get an emergency fund built up for those lazy winter days!you ll enjoy them more when you know you have money to fall back on!

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regards
dazmond