Index, WA is known for its mild climate. Temperatures usually stay in the mid-70s during the summer months and mid-30s in the winter. Average annual rainfall is around 30 inches, while snowfall generally remains light. The area has a long dry season, with temperatures rarely falling below freezing even during wintertime. The sun shines for about 220 days each year, allowing plenty of opportunity for outdoor activities such as hiking or camping throughout the year.
Index (zip 98256), Washington gets 73 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Index (zip 98256) averages 17 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 157 sunny days per year in Index (zip 98256). The US average is 205 sunny days.
Index (zip 98256) gets some kind of precipitation, on average, 184 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 76 degrees
Winter Low: the January low is 34
Rain: averages 73 inches of rain a year
Snow: averages 17 inches of snow a year