OCTOBER 2005 CLIMATIC SUMMARY

The month of October started on a hot note with temperatures rising into the upper 80s to upper 90s on the 1st. It was one of the warmest October days on record.
The heat was short-lived as a powerful upper low pressure system brought heavy rain and snow to the region on the 4th and the 5th. Snowfall across northeastern Wyoming,
the northern Black Hills and northwestern South Dakota was 6 to 12 inches, with 2 to 4 inches falling in the foothills and adjacent plains of western South Dakota. Rain fell elsewhere in western South Dakota. After this storm high pressure dominated the weather through the rest of the month bringing above normal temperatures and dry weather.
Temperatures averaged 1 to 3 degrees above normal, with only 4 locations reporting below normal temperatures. Sundance was the hot spot averaging 3.9 degrees above normal, while Colony was the cool spot averaging 1.9 degrees below normal. 
  
Precipitation was 40 to 60 percent above normal across northeastern Wyoming, the northern Black Hills and far northwestern South Dakota, and 40 to 60 percent below normal elsewhere. Winner was the dry spot receiving only 18 percent of normal precipitation, while Devil’s Tower was the wet spot with 180 percent of normal precipitation.

LOCAL EXTREMES 

Temperature Data

Rapid City

 

Lead

 

Gillette

 

 

Temperature

Date

Temperature

Date

Temperature 

Date

Maximum Temperature

90 degrees

1st 

82 degrees

1st 

89 degrees

1st  

Minimum Temperature

22 degrees

24th  

17 degrees

23rd  

15 degrees

5th  

Precipitation Data

Rapid City

 

Lead

 

Gillette

 

Monthly  Data

Amount

Data

Amount

Date

Amount

Date

Precipitation

1.09 inches

 

2.75 inches

 

1.79 inches

 

Snowfall

1.4 inches

 

10.4 inches

 

6.0 inches

 

 

 

 

 

 

 

 

Daily Data

 

 

 

 

 

 

Maximum Precipitation

0.96 inches

4th 

1.14 inches

5th

0.88 inches

4th 

Maximum Snowfall

1.4 inches

4th 

9.9 inches

5th

3.0 inches

4th  , 5th  

MONTHLY EXTREMES

Temperature Data

 

Western South Dakota

 

 

Northeastern Wyoming

 

 

Temperature

Site

Date

Temperature

Site

Date

Maximum Temperature

98 degrees

Opal

2nd 

92 degrees

Colony

1st

Minimum Temperature

9 degrees

Cottonwood

24th

12 degrees

Upton 14ENE

23rd, 24th

Precipitation Data

 

Western South Dakota

 

 

Northeastern Wyoming

 

Monthly Data

Amount

Site

Date

Amount

Site

Date

Maximum Precipitation

3.05 inches

Deadwood 2NE

 

2.76 inches

Echeta

 

Minimum Precipitation

0.34 inches

Harrington

 

1.14 inches

Upton

 

Maximum Snowfall

12.3 inches

Deadwood 2NE

 

10.0 inches

Rockypoint 1N

 

Minimum Snowfall

0.0 inches

Several Locations

 

2.0 inches

Moorcroft

 

 

 

 

 

 

 

 

Daily Data

 

 

 

 

 

 

Maximum Precipitation

1.82 inches

Bison

5th 

1.49 inches

Hulett 

5th

Maximum Snowfall

12.0 inches

Camp Crook Deadwood

5th
5th 

10.0 inches

Rockypoint 1N

5th

MONTHLY REOCRDS

LOCATION

DATE

NEW RECORD

OLD RECORD

DATE

Camp Crook

10/05/2005

12.0 inches snowfall

12.0 inches

10/19/1919

Redig 11 NE

10/05/2005

9.0 inches snowfall

8.0 inches

10/02/1950

Opal

10/02/2005

98 degrees

95 degrees

10/03/1997

Newell

10/02/2005

95 degrees

95 degrees

10/02/1953

Colony, Wyoming

10/01/2005

92 degrees

92 degrees

10/04/1963

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