October 2013 Climatic Summary
 
October temperatures across the entire region were 4.0 degrees below average for the month. The location with the coldest departure from average was Sundance, which was 5.7 degrees below normal. The two locations that were closest to average were Custer and Lead, at 1.4 degrees below normal.
 
Precipitation in October averaged around 350 percent of normal across the entire area due to the very unusual early season snow storm.  Camp Crook received 6.92 inches of precipitation, which was over 600% of normal. Newcastle was the closest to average at 138% of normal. Lead received the most precipitation overall, with 12.56 inches of liquid equivalent. Most of that came from the 55 inches of snow that fell during the early October storm.
 
October storm summary...
 
Oct 4-5th - A significant early season snowstorm dropped a foot or more of snow across much of western South Dakota and northeastern Wyoming during the first week in October. Many locations easily set records for the most snowfall recorded in any October.
 
 
 
 
 
 
 
 
 
Station
Oct 2013 Snowfall
Rank
Previous Oct Snowfall
Previous Oct Snowfall
 
 
 
 
 
 
 
 
 
Cottonwood
16.4"
1st
11.4" in 1919
 
 
 
Dupree
15.7"
1st
11.7" in 1943
 
 
 
Ft. Meade
29.0"
1st
13.6" in 1996
 
 
 
Gillette
17.9"
2nd
21.5" in 1971
15.3" in 1925
 
 
Interior
20.0"
1st
9.8" in 2002
 
 
 
Lead
64.6"
2nd
70.2" in 1995
64.3" in 1982
 
 
Lemmon
23.5"
1st
16.0" in 1991
 
 
 
Oelrichs
28.0"
1st
13.0" in 1991
 
 
 
Rapid City
25.5"
1st
15.1" in 1919
 
 
 
Spearfish
46.0"
1st
41.0" in 1919
 
 
 
Sundance
23.4"
2nd
26.0" in 1982
21.3" in 1925
 
 
 
 
 
 
 
 
 
Oct 11th – A strong low pressure system moved out of the Central Rockies and into the Northern Plains, producing widespread heavy rains and very strong winds. One to three inches of rain fell across the Black Hills area into northwestern South Dakota accompanied by 60 to 75 mph wind gusts. In addition,
3 to 8 inches of snow fell across the higher elevation of the northern and central Black Hills.
 
Oct 14-15th – Another strong low pressure system moved through the area with 3 to 12 inches of snow falling across the Black Hills region.
  
 
LOCAL EXTREMES
Rapid City
 
Lead
 
Gillette
 
Temperature
Temperature
Date
Temperature
Date
Temperature
Date
Max. Temp.
70
1st
73
1st
71
1st
Min. Temp.
24
28th, 29th
21
28th
23
16th
Precipitation
Rapid City
 
Lead
 
Gillette
 
Monthly Data
Amount
Date
Amount
Date
Amount
Date
Precipitation
5.44
 
12.56
 
3.94
 
Snowfall
25.5
 
64.6
 
17.9
 
Daily Data
Amount
Date
Amount
Date
Amount
Date
Max. Precipitation
1.83
4th
3.86
4th
1.93
4th
Max. Snowfall
19.0
4th
42
4th
13.1
4th

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