389
CXUS55 KRIW 011656
CLMCPR

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1041 AM MDT TUE JUL 01 2025

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR CASPER FOR THE MONTH OF
JUNE 2025...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF JUNE 2025 WILL BE
AVAILABLE IN APPROXIMATELY 60 DAYS FROM THE NATIONAL CENTERS FOR
ENVIRONMENTAL INFORMATION (HTTP://WWW.NCDC.NOAA.GOV/CDO-
WEB/DATASETS). UNOFFICIAL ASOS DAILY SUMMARIES ARE AVAILABLE ON THE
INTERNET AT HTTP://WWW.WEATHER.GOV/CLIMATE/INDEX.PHP?WFO=RIW

...JUNE WAS WARMER AND DRIER THAN NORMAL FOR CASPER...

AVERAGE TEMPERATURE FOR CASPER IN JUNE WAS 64.3 DEGREES WHICH IS 1.8
DEGREE ABOVE NORMAL. THE WARMEST READING OF THE MONTH WAS 96 DEGREES
ON THE 28TH. THE HIGH OF 92 ON THE FIRST BROKE THE 2020 RECORD OF 91
DEGREES. THE COLDEST READING FOR THE MONTH WAS 32 DEGREES ON THE
23RD AND BROKE THE 1987 RECORD OF 38 DEGREES.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.53 INCHES...WHICH IS 40
PERCENT OF NORMAL. THE WETTEST 24-HOUR PERIOD DURING THE MONTH WAS
ON THE 12TH WITH 0.27 INCHES. NO PRECIPITATION RECORDS WERE BROKEN
THIS MONTH. THE HIGHEST WIND GUST WAS 56 MPH FROM THE SOUTHWEST ON
THE 20TH.

...THE CASPER WY CLIMATE SUMMARY FOR THE MONTH OF JUNE 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH            102   06/30/1990
                       06/24/1988
 LOW              25   06/10/2019
HIGHEST           96   06/28
LOWEST            32   06/23
AVG. MAXIMUM    83.5               79.6     3.9
AVG. MINIMUM    45.0               45.4    -0.4
MEAN            64.3               62.5     1.8
DAYS MAX >= 90    10
DAYS MAX <= 32     0
DAYS MIN <= 32     1
DAYS MIN <= 0      0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        4.71   2003
 MINIMUM        0.03   1956
TOTALS          0.53               1.34   -0.81     0.80
DAILY AVG.      0.02               0.04   -0.02
DAYS >= .01        7
DAYS >= .10        1
DAYS >= .50        0
DAYS >= 1.00       0
GREATEST
 24 HR. TOTAL   0.27   06/12 TO 06/12
 STORM TOTAL    0.27

SNOWFALL (INCHES)
TOTALS           0.0                0.1    -0.1
SINCE 7/1       26.5               71.8   -45.3
SNOWDEPTH AVG.     0
DAYS >= 1.0        0

DEGREE DAYS
HEATING TOTAL     91                126     -35
 SINCE 7/1      7022               7487    -465
COOLING TOTAL     75                 51      24
 SINCE 1/1        75                 55      20
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              9.0
RESULTANT WIND SPEED/DIRECTION   1/320
HIGHEST WIND SPEED/DIRECTION    40/230    DATE  06/20
HIGHEST GUST SPEED/DIRECTION    56/230    DATE  06/11
                                56/240          06/20

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           22
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     54

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              9     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       0
LIGHT RAIN               13     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       1     FOG W/VIS <= 1/4 MILE      0
HAZE                      4

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

LOOKING AHEAD TO JULY 2025. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 86 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 50 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 90
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 55. THE AVERAGE MONTHLY
PRECIPITATION IS 1.19 INCHES.

$$