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BLACKFOOT â€” September weather was warmer and drier in 2011 than the 20-year average, but October looks to get started much cooler and wetter.
A strong, slow-moving storm is expected to move through Southeast Idaho this week, bringing cooler temperatures, rain and even snow to higher elevations.
Widespread precipitation is expected today and tomorrow with a chance of showers through Friday. Mountain snowfall of 6-10 inches above 8,000 feet is forecast through Friday.
In Blackfoot, the high temperature today is forecast to reach 67 degrees. By Friday the high is expected to reach just 46 degrees. Overnight temperatures are expected to fall to 34 degrees by Saturday.
The average high temperature in September for the Pocatello area was 83 degreesâ€”seven degrees warmer than the 20-year averageâ€”topping out at 90 degrees on the final day of the month.
The average temperature for September was 61.2 degrees, up just two degrees from the 20-year average.
September was noticeably drier than years past, receiving less than one-quarter of an inch of rain. On average, more than three-quarters of an inch of precipitation falls in September.