You are watching: How much does an inch of rain equal in snow

Perform the baseline rain-to-snow conversion. The baseline ratio of rain to eye is 1 inch of rain amounts to 10 inches of snow. For example, to calculate the snowfall tantamount of 3 customs of rain, multiply 3 by 10 to acquire 30 inch of snow as the baseline conversion. This conversion applies for eye falling at temperatures close to freezing, in between 28 and also 34 degrees Fahrenheit.

Find the temperature in the place for i beg your pardon you"d choose to do the conversion. You have the right to track under this information via the national Weather Service, for example, or any variety of other meteorological sources, such together the Weather Channel. In general, colder temperatures make snow loss less densely and lower the rain-to-snow ratio, resulting in much more inches of snow per customs of rain.

Adjust her conversion to account because that temperature if the outside temperature is less than or equal to 27 levels Fahrenheit. To calculation rain to eye for temperatures in between 20 and also 27 levels Fahrenheit, main point rainfall by 15 instead of 10. Because that temperatures between 15 and 19 degrees Fahrenheit, multiply rainfall through 20. In between 10 and also 14, multiply by 30; between 0 and also 9, multiply by 40; in between -20 and also -1, main point by 50, and between -40 and also -21, main point by 100. For example, to calculation the snowfall tantamount of 3 customs of rain at 5 degrees Fahrenheit, main point 3 through 40 to achieve 120 customs of snow. Therefore, if 3 inches of rain are expected but the temperature drops all of sudden to 5 degrees Fahrenheit, 120 customs of snow will certainly fall.

Perform the calculations in turning back to calculate eye to rain. For example, for 8 customs of eye falling in ~ a temperature of 20 degrees Fahrenheit, division 8 by 15, due to the fact that the conversion factor for 20 levels is 15. The an outcome is roughly 0.53 inches of rain. Therefore, 8 customs of snow that fell at 20 degrees Fahrenheit will certainly melt down to approximately 0.53 inch of rain.

countless factors influence snow thickness apart from ambient temperature. Wind, for example, deserve to compact snow and also cause it to fall much more densely, lowering the rain-to-snow ratio.

countless factors affect snow thickness apart from ambient temperature. Wind, for example, can compact snow and cause it come fall an ext densely, lowering the rain-to-snow ratio.

Richard Graham has functioned professionally as both one economist and educator due to the fact that 2007. He additionally works as a consultant to tiny businesses and also organizations concentrated on arising green technologies. Graham hold a Bachelor of scientific research in economics.

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