Plant roots spread out on the surface to take in water. They don't grow deep because the soil is always freezing and thawing which breaks up roots. One of their adaptions to the cold climate is tiny hairs on their leaves to help keep in moisture. The animals of the tundra include fish, birds, mammals and insects.
7.6. The highest average temperature in Salem is July at 69.1 degrees. The coldest average temperature in Salem is December at 38.8 degrees. The most monthly precipitation in Salem occurs in December with 7.6 inches. The Salem weather information is based on the average of the previous 3-7 years of data.he Salem, OR air quality index is 3.7% less than the Oregon average and 37.6% less than the national average.
Expect 16Â°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Oregon in April. Check more long-term weather averages for Oregon in April before you book your next holiday to Oregon in 2018. The April weather averages shown below are for Salem. 1  Oregon weather overview. 2  Oregon monthly weather. 3  Oregon 5-day forecast. 4  Oregon holidays. 5  Oregon map. 6  More destinations. 7  Back to USA.