Some of the most pleasant weather in the Front Range Foothills often occurs in September. Visits from monsoonal moisture become less frequent, and weak cold fronts start swooping down from the north. These fronts are often shallow, bringing some cooling to Nederland, but overall these fronts arrive with little or no precipitation. These same fronts can result in low clouds and drizzle on the plains. There are mornings in September were Nederland can literally be above the clouds and 10-15 degrees warmer than Boulder!
This week will feature seasonable temperatures. The best chance of precipitation is on Tuesday when some moisture will work its way into the area. The atmosphere will be unstable, and any storms that form will be moving from the southwest. While these storms may be accompanied by heavy rain, they should be fast moving, and this will help to reduce the threat of any flooding in and around the Cold Springs burn area.
The rest of the week will be glorious, great weather to visit the Indian Peaks. These dry and sunny conditions should continue into Sunday.