Rain & Snow Calculator

How to Use Rain & Snow Calculator

Enter the current air temperature and the precipitation amount in millimeters. The calculator classifies the event as rain or snow using the freezing-point threshold, assigns a light, moderate, or heavy intensity band, and estimates snow depth when the type is snow.

Formula & Theory - Rain & Snow Calculator

The type decision is a threshold model:

if temperature ≤ 0°C: precipitation type = snow
if temperature > 0°C: precipitation type = rain

Intensity is then read from the precipitation amount: low amounts are light, middle amounts are moderate, and larger amounts are heavy. When the type is snow, the calculator estimates depth with a 10:1 snow-to-water ratio:

estimated snow depth = precipitation amount × 10

The model is deliberately simple. It does not include atmospheric layers, surface temperature, wind, or wet-bulb effects, all of which can matter around freezing.

Use Cases for Rain & Snow Calculator

• Outdoor planning - Quickly interpret whether measured precipitation is likely rain or snow.
• Ecology lessons - Show a simple threshold model for precipitation type.
• Snow estimates - Convert liquid precipitation into a rough snow-depth figure.

Use it for quick interpretation of simple weather inputs, and expect mixed precipitation when real conditions sit near 0°C.