Storm Impacting the Northwest U.S.; Fire Weather Conditions in Southern California; Severe Weather in the South

A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >

October 2009 proved to be a month of cool and wet conditions across the area, slowing and stalling at times the fall harvest, interfering with yard work and end of year construction projects, hampering the fall sports season, and featuring the most cloudy days in Sioux Falls for any month since 2004. The following tables summarize some of the climatic information for the month.

Sioux City

Rank	Precipitation (inches)	Avg. Temperature (degrees F)	Avg. Max Temp. (degrees F)
1	5.70 (2009)*	39.3 (1925)	47.6 (1925)
2	5.30 (1979)	43.0 (1917)	53.3 (2009)
3	4.83 (1982)	44.3 (2009)	54.1 (1917)
4	4.77 (1968)	44.5 (2002)	54.6 (2002)
5	4.61 (2008)	45.1 (1976)	55.8 (1911,1919)

* wettest October on record Snowfall was 1.8", which was 8th greatest for October. Greatest was 9.8" in 1991.

Sioux Falls

Rank	Precipitation (inches)	Avg. Temperature (degrees F)	Avg. Max Temp. (degrees F)
1	6.89 (1911)	37.8 (1925)	47.1 (1925)
2	6.28 (1998)	38.2 (1917)	49.7 (2009)
3	5.98 (2007)	40.9 (2002)	50.2 (1917)
4	5.73 (1973)	42.4 (2009)	50.3 (2002)
5	5.52 (2009)	43.1 (1895)	53.0 (1969)

Snowfall was 3.5", which was 9th greatest for October. Greatest was 10.0" in 1991.

Huron

Rank	Precipitation (inches)	Avg. Temperature (degrees F)	Avg. Max Temp. (degrees F)
1	6.44 (1946)	36.8 (1925)	46.5 (1925)
2	5.12 (1998)	39.3 (1917)	48.6 (2009)
3	4.88 (2008)	39.7 (2002)	49.8 (2002)
4	4.66 (1961)	41.3 (2009)	50.9 (1917)
5	3.90 (2009)	41.4 (1919)	52.1 (1919)