Currently, January is the cheapest month in which you can book a flight from Sioux City to Spokane (average of $326). Flying from Sioux City to Spokane in June is currently the most expensive (average of $438). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
In terms of precipitation, rainfall in Spokane ranges from 0.6 - 2.3 inches per month. November is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit Spokane when rainfall is around 0.6 in.
If weather is an important factor for your trip to Spokane, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 26.6 F).