Weather in Mexico's Riviera Nayarit. One of the chief considerations in planning a vacation is the weather, and it is the weather that makes Riviera Nayarit an excellent choice for anyone trying to escape the cold of a northern winter, or the heat of a southern summer.
Asotin County Weather. The average temperature of Asotin County is 49.59Â°F, which is about the same as the Washington average temperature of 50.47Â°F and is lower than the national average temperature of 54.45Â°F. Historical Weather. Heating Cost Index, #24.
By the middle of the month, the temperature drops rapidly to an average of 20 Â° C (69Â°F), highs of 24 Â° C (76Â°F) and lows of 17 Â° C (63Â°F). It continues to decrease to the end of the month, though temperatures remain quite warm relatively, averages of 19 Â° C (67Â°F), highs of 22 Â° C (72Â°F) and lows of 16 Â° C (61Â°F).he air is driest around September 1 (48%) and most humid around September 28 (75%). Daily wind speed averages vary from 2 mph to 18 mph (light air to fresh breeze) or about 8 knots. Winds typically blow in from the east, though occasionally from the north and northeast as well.