Also, before you use a nasal steroid spray to treat your allergies, doctors suggest you first use a saline nasal spray to cleanse the nose and rid it of thick mucus and debris. Thick mucus can keep the nasal steroid spray from coating the nasal mucosa, where itâs most effective.
Olympia: Annual Weather Averages. August is the hottest month in Olympia with an average temperature of 25Â°C (77Â°F) and the coldest is January at 10Â°C (50Â°F) with the most daily sunshine hours at 13 in July. The wettest month is December with an average of 148mm of rain.
The highest average temperature in Olympia is July at 64.9 degrees. The coldest average temperature in Olympia is December at 37.3 degrees. The most monthly precipitation in Olympia occurs in November with 10.1 inches. The Olympia weather information is based on the average of the previous 3-7 years of data.Loading...he Olympia, WA pollution index is the sum of the most hazardous air pollutants displayed in pounds. The Olympia, WA pollution index is 23.4% less than the Washington average and 32.2% greater than the national average.