690
CXUS55 KRIW 291754
CLACPR

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1034 AM MST THU JAN 29 2026

...PRELIMINARY ANNUAL CLIMATE SUMMARY FOR CASPER FOR 2025...

...10TH WARMEST YEAR AT 47.2F (1.6 DEGREES ABOVE NORMAL)
...26TH WARMEST SUMMER AT 68.5F (TIES 2022, 2002)

...40TH WETTEST YEAR WITH 12.05 INCHES (47TH DRIEST) (98.6% OF
NORMAL)
...1ST LEAST SNOW YEAR WITH 34.8 INCHES. 48.5% OF NORMAL. (1943 HAD
38 INCHES)
...3RD LEAST SNOWY SEASON WITH 42.4 INCHES. (2024-2025)

...HOT AND COLD MONTHS: 8TH WARMEST NOVEMBER AND 1ST WARMEST DECEMBER

...WET AND DRY MONTHS: 6TH DRIEST FEB AND 6TH WETTEST SEPTEMBER.

...HOT DAYS: FEB 2ND 57F, FEB 4TH 61 (T 1963), MAR 26TH 75F, MAR
27TH 76F, APR 11TH 80F (NEW RECORD FOR EARLIEST 80-DEGREE DAY), APR
12TH 77F, JUN 1ST 92F, JUL 9TH 100F, AUG 20TH 99F, NOV 16TH 67F (T
1999); DEC 11TH 60F, DEC 14TH 59F, DEC 15TH 59F, DEC 16TH 60F, DEC
19TH 59F, DEC 21ST 57F (T), DEC 22ND 61F, DEC 23RD 63F, DEC 24TH
63F, DEC 25TH 61F.

...COLD DAYS: JAN 20TH -25F, JUN 23RD 32F, AUG 9TH 39F, SEP 6TH 32F,
NOV 29TH -15F.

...WET DAYS: MAR 6TH 0.77, AUG 27TH 0.44 SEP 16TH 1.24, SEP 17TH
0.82, SEP 23RD 0.38.

...SNOWY DAYS: NO RECORD SNOW DAYS IN 2025.

...PEAK WIND: FEBRUARY 5TH 240/70 MPH. DECEMBER 17TH 290/78 MPH.


...THE CASPER WY CLIMATE SUMMARY FOR THE YEAR OF 2025...

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            104   07/29/2006
                       07/16/2005
                       07/12/1954
 LOW             -42   12/22/2022
HIGHEST          100                 MM
LOWEST           -25                 MM
AVG. MAXIMUM    62.3                        2.6
AVG. MINIMUM    32.0                        0.5
MEAN            47.2

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       20.48   1994
 MINIMUM        5.79   2020
TOTALS         12.05              12.22   -0.17

SNOWFALL (INCHES)
RECORDS
 TOTAL         137.6   1982
TOTALS          34.8               71.8   -37.0

DEGREE DAYS
HEATING TOTAL   6841
COOLING TOTAL    467
..............................................................

WIND (MPH)
HIGHEST WIND SPEED/DIRECTION    58/250    DATE  12/19
HIGHEST GUST SPEED/DIRECTION    78/290    DATE  12/17


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             41     MIXED PRECIP               0
HEAVY RAIN                9     RAIN                      12
LIGHT RAIN              101     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                3     SNOW                      11
LIGHT SNOW               54     SLEET                      0
FOG                      91     FOG W/VIS <= 1/4 MILE     15
HAZE                     42

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

$$