AUGUST 2005 CLIMATIC SUMMARY

 The month of August started out hot the first week, with cooler weather dominating the rest of the month. A cold front moved across the region on the 12th producing scattered thunderstorms…some with heavy rain. In northeastern Wyoming large hail fell at several locations, as well as, a tornado at Wright. Another cold front brought scattered thunderstorms on the 23rd…with some storms producing large hail and heavy rains.
August was a little cooler than normal with temperatures averaging 1 to 2 degrees below normal. Only a few locations reported above normal temperatures. Spearfish and Winner were the warm spots averaging 1.9 degrees above normal, while Colony was the cool spot averaging 2.6 degrees below normal.
Rainfall averaged 15 to 30 percent above normal, with strong thunderstorms producing much above normal rainfall at a few locations. Cottonwood was the dry spot with only 48 percent of normal rainfall, while Camp Crook was the wet spot with 288 percent of normal rainfall.
LOCAL EXTREMES

Temperature Data

Rapid City

 

Lead

 

Gillette

 

 

Temperature

Date

Temperature

Date

Temperature 

Date

Maximum Temperature

98 degrees

8th

90 degrees

7th

97 degrees

6th , 7th,  8th  

Minimum Temperature

50 degrees

12th and 13th 

42 degrees

4th 

42 degrees

4th , 31st  

Precipitation Data

Rapid City

 

Lead

 

Gillette

 

Monthly  Data

Amount

Data

Amount

Date

Amount

Date

Precipitation

1.94 inches

 

1.35 inches

 

0.74 inches

 

Snowfall

0.0 inches

 

0.0 inches

 

0.0 inches

 

 

 

 

 

 

 

 

Daily Data

 

 

 

 

 

 

Maximum Precipitation

0.54 inches

11th 

1.35 inches

11th

0.31 inches

10th 

Maximum Snowfall

0.0 inches

 

0.0 inches

 

0.0 inches

 

REGIONAL EXTREMES

Temperature Data

 

Western South Dakota

 

 

Northeastern Wyoming

 

 

Temperature

Site

Date

Temperature

Site

Date

Maximum Temperature

109 degrees

Bear Ridge

8th

101 degrees

Colony

7th

Minimum Temperature

33 degrees

Medicine Mtn

27th

31 degree

Moorcroft

29th, 30th

Precipitation Data

 

Western South Dakota

 

 

Northeastern Wyoming

 

Monthly Data

Amount

Site

Date

Amount

Site

Date

Maximum Precipitation

3.30 inches

Custer

 

3.95 inches

Newcastle

 

Minimum Precipitation

0.78 inches

Cottonwood

 

0.60 inches

Echeta

 

Maximum Snowfall

0.0 inches

 

 

0.0 inches

 

 

Minimum Snowfall

0.0 inches

 

 

0.0 inches

 

 

 

 

 

 

 

 

 

Daily Data

 

 

 

 

 

 

Maximum Precipitation

1.99 inches

Martin

13th

2.30 inches

Newcastle 

13th

Maximum Snowfall

0.0 inches

 

 

0.0 inches

 

 

MONTHLY RECORDS

LOCATION

DATE

NEW RECORD

OLD RECORD

DATE

Newcastle, Wyoming

08/13/2005

2.30 inches rainfall

2.25 inches

08/29/1996


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