In his twice-weekly newsletter, The Painter's Keys, Robert Genn writes a practical and humourous response to one of his readers queries about art in the great outdoors...when it's cold enough to see your breath and your fingertips turn blue.
Shades of what artists from Patrick John Mills Gallery went through earlier this week.
Here are Robert Genn's comments: 
Yesterday,  Richard Woods of Sparks, Nevada wrote, "I'm just heading out painting at a  location where snow is a good possibility. The forecast calls for a high of 36  degrees Fahrenheit. Painting in cold weather is a pain for me. I see pictures of  you working while sitting in snow banks and at high elevations with snow coming  down. How do you do it?"
Thanks,  Richard. With forethought. The main problems are wind, precipitation, and the  temperature of things.
Wind: You may  need to sacrifice a really good view to put your back to the wind. I often paint  in a folding chair, so an extra chunk of foam on the chair-back is useful. Also,  one of those fur-lined helmets with the flaps helps prevent an early loss of  ears. Parkas or hoodies tend to interfere with head movements and the business  of looking over your shoulder for bears. Fur-lined hiking boots are a must.  "There is no bad weather for painting en plein air," says Barbara Jablonski, "only bad painting  clothes."
Teach yourself  to paint using leather or wool gloves. I used to cut the fingertips off, but  it's only necessary if you're doing finicky work. Regular gloves or even mitts  can help make your stroke broader and fresher.
Precipitation:  Whether straight down or sideways, snow, sleet or rain are fun-spoilers. Wet  snow falling and puddling on acrylic or watercolour has only limited creative  value. Oil and water, of course, don't mix. "Best Brellas" are simply brilliant  on calm, sunny days--but in a gale they can move you and your work a mile down  the valley.
Warmth:  "Scottish antifreeze" from a small flask is best. Cocoa from a thermos works but  is less fun. Some ladies of my acquaintance put chemical warmers called "Heatmax  Hot Hands" and "Heatmax Toasti Toes" into needy areas. I like to point out that  Scotch taken orally in moderation warms all over.
Some painters  report the main benefit of sub-zero painting is the achievement of speed. But  there's also a wonderful feeling of smugness that slips over you like a soft  woollen blanket. Whether an island unto yourself or together with a gaggle of  good companions, you're adrift and apart from a madding world and in soft  communion with wonder.
Best  regards,
Robert
PS: "Working  outdoors puts you in direct contact with the life force, not just the light and  the landscape, but also the vitality of the world." (George Carlson)
Esoterica:  Acrylics and watercolours freeze easily and take on an unpleasant granular  texture which stays on after they thaw. Keep all your paints, including oils, in  a warm part of the car and don't leave them in a car overnight. Liquids like  acrylic medium and linseed oil should be near to room temperature for best  viscosity. The Russians have pioneered thinning watercolours with vodka. When  ice begins to form on the palette it may seem like the time to reconsider  chartered accountancy, but really it's just time for the lodge. Tomorrow will be  another day.