745
CXUS55 KRIW 011632
CLMCPR

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1032 AM MDT MON JUN 01 2026

...................................

...THE CASPER WY CLIMATE SUMMARY FOR THE MONTH OF MAY 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2026

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             95   05/29/2003
 LOW              16   05/12/1953
HIGHEST           92   05/13
LOWEST            18   05/06
AVG. MAXIMUM    69.2               66.8     2.4
AVG. MINIMUM    36.9               37.1    -0.2
MEAN            53.0               52.0     1.0
DAYS MAX >= 90     1
DAYS MAX <= 32     0
DAYS MIN <= 32    10
DAYS MIN <= 0      0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        6.46   1978
 MINIMUM        0.30   2020
TOTALS          1.67               2.21   -0.54     1.28
DAILY AVG.      0.05               0.07   -0.02
DAYS >= .01        9
DAYS >= .10        4
DAYS >= .50        2
DAYS >= 1.00       0
GREATEST
 24 HR. TOTAL   0.69   05/17 TO 05/18
 STORM TOTAL    0.62

SNOWFALL (INCHES)
TOTALS           2.5                2.6    -0.1
SINCE 7/1       29.6               71.7   -42.1
SNOWDEPTH AVG.     0
DAYS >= 1.0        1

DEGREE DAYS
HEATING TOTAL    365                409     -44
 SINCE 7/1      5748               7361   -1613
COOLING TOTAL      1                  4      -3
 SINCE 1/1         1                  4      -3
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              10.6
RESULTANT WIND SPEED/DIRECTION   3/260
HIGHEST WIND SPEED/DIRECTION    39/220    DATE  05/13
HIGHEST GUST SPEED/DIRECTION    58/220    DATE  05/15

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.26
NUMBER OF DAYS FAIR           23
NUMBER OF DAYS PC              5
NUMBER OF DAYS CLOUDY          3

AVERAGE RH (PERCENT)     55

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               15     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       2
LIGHT SNOW                3     SLEET                      0
FOG                       5     FOG W/VIS <= 1/4 MILE      0
HAZE                      2

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

$$