JULY 2005 CLIMATIC SUMMARY

July was dominated by high pressure throughout the month. A powerful squall line moved across the northern portions of northeastern Wyoming and across western South Dakota north of I-90 on the 2nd. This line of thunderstorms produced numerous reports of winds in excess of 80 mph.  From the 8th through the 23rd high temperatures averaged better than 95 degrees on the plains. The 16th and 17th were the hottest days of the month with highs ranging from 103 to 113 on the plains and 92 to 102 in the Black Hills. 

Another widespread outbreak of thunderstorms occurred on the 24th and 25th, as a strong cold front moved through the region. These storms brought heavy rainfall and large hail to many areas in western South Dakota.

July was a hot month as temperatures averaged 2 to 4 degrees above normal for the month. Only 3 locations reported below normal temperatures. Spearfish was the hot spot averaging 5.4 degrees above normal, while Winner was the cool spot averaging 0.3 degrees below normal.

July was also a dry month with rainfall averaging 30 to 50 percent below normal, though strong thunderstorms did produce above normal rainfall in a few locations. Winner was the dry spot receiving only 13 percent of normal rainfall, while Dupree was the wet spot receiving 168 percent of normal rainfall.

LOCAL EXTREMES

Temperature Data

Rapid City

 

Lead

 

Gillette

 

 

Temperature

Date

Temperature

Date

Temperature 

Date

Maximum Temperature

105 degrees

16th

96 degrees

16th

101 degrees

16th 

Minimum Temperature

50 degrees

26th  

40 degrees

27th  

47 degrees

18th , 26th , 27th  

Precipitation Data

Rapid City

 

Lead

 

Gillette

 

Monthly  Data

Amount

Data

Amount

Date

Amount

Date

Precipitation

2.03 inches

 

1.22 inches

 

0.51 inches

 

Snowfall

0.0 inches

 

0.0 inches

 

0.0 inches

 

 

 

 

 

 

 

 

Daily Data

 

 

 

 

 

 

Maximum Precipitation

1.04 inches

24th 

0.68 inches

26th

0.48 inches

26th  

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

113 degrees

Bear Ridge

17th

107 degrees

Weston 1E

16th

Colony

9th, 16th

Moorcroft

17th

Minimum Temperature

33 degrees

Hill City

27th

29 degrees

Moorcroft

1st

Precipitation Data

 

Western South Dakota

 

 

Northeastern Wyoming

 

Monthly Data

Amount

Site

Date

Amount

Site

Date

Maximum Precipitation

4.51 inches

Long Valley

 

2.31 inches

Newcastle

 

Minimum Precipitation

0.45 inches

Winner

 

0.39 inches

Wright 12W

 

Maximum Snowfall

0.0 inches

 

 

0.0 inches

 

 

Minimum Snowfall

0.0 inches

 

 

0.0 inches

 

 

 

 

 

 

 

 

 

Daily Data

 

 

 

 

 

 

Maximum Precipitation

2.32 inches

Hot Springs

24th

1.38 inches

Upton 14ENE 

25th

Maximum Snowfall

0.0 inches

 

 

0.0 inches

 

 

MONTHLY RECORDS

LOCATION

DATE

NEW RECORD

OLD RECORD

DATE

Fort Meade

07/16/2005

107 degrees

107 degrees

07/06/1973

 

 

 

107 degrees

07/07/1981

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