Stormy weather is associated with lower barometric pressures, while high pressure is generally associated with drier conditions. Measuring moisture - Precipitation is measured in several ways. You can measure liquid precipitation, like rain and dew, with a rain gauge. Snow can be measured with a ruler, although its actual amount is its water content - a rough guide is that 10 inches of snow equals one inch of liquid. To be an accurate observer, you should use a rain gauge whenever you're trying to measure water content.
Humidity is another measurable weather phenomenon.
Relative humidity is what you'll actually measure, usually with a sling psychrometer. This instrument takes a little practice to read it accurately, which is why many amateurs rely on a digital measuring device. Keep in mind that there can be anywhere from zero to 100 percent relative humidity. Recording winds - You can measure winds with an anemometer that records wind speed and direction. For accurate readings, place your anemometer away from trees or free-standing objects that might interfere with your measurements.