JANUARY 2005 CLIMATIC SUMMARY

The month of January was a tale of two seasons. Arctic air settled over the region at the beginning of the month, with a snowstorm moving through on the 4th and 5th. This storm dropped 6 to 9 inches of snow in south central South Dakota, with 3 to 6 inches elsewhere across western South Dakota and northeastern Wyoming. The arctic air remained entrenched across the region through the first half of the month, then, gave way to an upper level ridge of high pressure during the last half of the month. This upper ridge brought mild temperatures and dry weather for the last half of the month.

Temperatures averaged 12 to 16 degrees below normal in the first half of the month, and 14 to 18 degrees above normal in the last half of the month. For the month as a whole, temperatures averaged near normal as these two weather extremes balanced each other out.  Lead was the warm spot averaging 3.4 degrees above normal, while Colony was the cool spot averaging 2.5 degrees below normal.

Overall, precipitation and snowfall averaged out near normal during the month. Lemmon was the dry spot receiving 18 percent of normal precipitation, while Long Valley was the wet spot receiving 232 percent of normal precipitation.

LOCAL EXTREMES

Temperature Data

Rapid City

 

Lead

 

Gillette

 

 

Temperature

Date

Temperature

Date

Temperature 

Date

Maximum Temperature

69 degrees

24th

63 degrees

24th

63 degrees

24th

Minimum Temperature

-13 degrees

5th 

-11 degrees

13th  and 14th

-15 degrees

14th 

Precipitation Data

Rapid City

 

Lead

 

Gillette

 

Monthly  Data

Amount

Data

Amount

Date

Amount

Date

Precipitation

0.39 inches

 

0.92 inches

 

0.60 inches

 

Snowfall

11.0 inches

 

15.6 inches

 

9.0 inches

 

 

 

 

 

 

 

 

Daily Data

 

 

 

 

 

 

Maximum Precipitation

0.21 inches

4th 

.32 inches

4th

0.28 inches

4th 

Maximum Snowfall

6.2 inches

4th 

5.6 inches

4th

6.0 inches

4th

REGIONAL EXTREMES

Temperature Data

 

Western South Dakota

 

 

Northeastern Wyoming

 

 

Temperature

Site

Date

Temperature

Site

Date

Maximum Temperature

73 degrees

Buffalo Gap

24th 

69 degrees

Colony

25th

Minimum Temperature

-33 degrees

Antelope Range

14th

-28 degrees

Recluse 11NNW

14th

Precipitation Data

 

Western South Dakota

 

 

Northeastern Wyoming

 

Monthly Data

Amount

Site

Date

Amount

Site

Date

Maximum Precipitation

1.48 inches

Kadoka

 

0.60 inches

Gillette

 

Minimum Precipitation

0.05 inches

Ludlow
Belle Fourche

 

0.12 inches

Upton 19SW

 

Maximum Snowfall

17.9 inches

Cedar Butte

 

12.0 inches

Sundance
Upton

 

Minimum Snowfall

1.0 inches

Bison
Buffalo Gap
Glad Valley

 

3.7 inches

Colony

 

 

 

 

 

 

 

 

Daily Data

 

 

 

 

 

 

Maximum Precipitation

0.70 inches

Kadoka

18th 

0.39 inches

Upton 

4th

Maximum Snowfall

10.6 inches

Cedar Butte

5th 

8.0 inches

Upton

4th

MONTHLY RECORDS

LOCATION

DATE

NEW RECORD

OLD RECORD

DATE

Maurine 10 SW

01/25/2005

69 degrees

67 degrees

01/23/1981

Interior

01/04/2005

7.0 inches snowfall

7.0 inches

01/01/1976

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