Climatological Report (Monthly)
Issued by NWS Billings, MT
Issued by NWS Billings, MT
255
CXUS55 KBYZ 012115
CLMSHR
CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
314 PM MDT WED OCT 01 2025
...................................
...THE SHERIDAN WY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1907 TO 2025
WEATHER OBSERVED NORMAL DEPART
VALUE DATE(S) VALUE FROM
NORMAL
................................................
TEMPERATURE (F)
HIGHEST 91 09/02
LOWEST 31 09/06
AVG. MAXIMUM 80.0 75.6 4.4
AVG. MINIMUM 43.9 42.5 1.4
MEAN 61.9 59.1 2.8
DAYS MAX >= 90 2
DAYS MAX <= 32 0
DAYS MIN <= 32 1
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
TOTALS 0.12 1.47 -1.35
DAYS >= .01 5
DAYS >= .10 0
DAYS >= .50 0
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.06 09/12 TO 09/12
DEGREE DAYS
HEATING TOTAL 109 212 -103
SINCE 7/1 132 271 -139
COOLING TOTAL 26 34 -8
SINCE 1/1 396 440 -44
................................................
WIND (MPH)
AVERAGE WIND SPEED 5.0
HIGHEST WIND SPEED/DIRECTION 29/330 DATE 09/04
29/320 09/22
HIGHEST GUST SPEED/DIRECTION 43/300 DATE 09/22
AVERAGE RH (PERCENT) 56
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 3 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 2
LIGHT RAIN 8 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 0 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.
&&
...SEPTEMBER 2025 MONTH IN REVIEW FOR SHERIDAN...
BELOW IS A SUMMARY OF THE TEMPERATURE AND PRECIPITATION
STATISTICS FOR SHERIDAN FOR SEPTEMBER 2025. ALL TEMPERATURES ARE IN
DEGREES FAHRENHEIT AND ALL PRECIPITATION AMOUNTS ARE IN INCHES. NORMALS
ARE 30 YEAR AVERAGES CALCULATED FROM 1991 TO 2020. MONTHLY RANKINGS
FOR PRECIPITATION AND TEMPERATURES USE A PERIOD
OF RECORD THAT STARTED IN MAY 1934 AT OR NEAR THE SHERIDAN AIRPORT.
NUMBERS DENOTED WITH AN * IS MISSING DATA IN THE CALCULATION.
...SHERIDAN MONTHLY PRECIPITATION...
MONTH 2025 VALUES NORMALS DEPARTURE RANKING
SEPTEMBER 0.12 1.47 -1.35 TIED FOR THE 7TH DRIEST OUT OF 119 YEARS
(RECORD DRIEST WAS T TIED IN 2012)
(DRIEST SINCE T IN 2012)
...SHERIDAN SEPTEMBER 2025 BROKEN OR TIED DAILY PRECIPITATION RECORDS...
NONE
...SHERIDAN AVERAGE TEMPERATURES...
MONTH 2025 VALUES NORMALS DEPARTURE RANKING
SEPTEMBER 62.0 59.1 +2.9 18TH WARMEST OUT OF 119 YEARS
(RECORD WARMEST WAS 66.2 IN 2024)
(WARMEST SINCE 66.2 IN 2024)
...SHERIDAN AVERAGE HIGH TEMPERATURES...
MONTH 2025 VALUES NORMALS DEPARTURE RANKING
SEPTEMBER 80.0 75.6 +4.4 TIED FOR THE 11TH WARMEST OUT OF 119 YEARS
(RECORD WARMEST WAS 85.6 IN 2024)
(WARMEST SINCE 85.6 IN 2024)
...SHERIDAN SEPTEMBER 2025 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...
NONE
...SHERIDAN SEPTEMBER 2025 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...
NONE
...SHERIDAN AVERAGE LOW TEMPERATURES...
MONTH 2025 VALUES NORMALS DEPARTURE RANKING
SEPTEMBER 43.9 42.5 +1.4 TIED FOR THE 28TH WARMEST OUT OF 119 YEARS
(RECORD WARMEST WAS 50.6 IN 1963)
(WARMEST SINCE 46.7 IN 2024)
...SHERIDAN SEPTEMBER 2025 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...
NONE
...SHERIDAN SEPTEMBER 2025 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...
31 ON SEPTEMBER 6 (OLD RECORD 33 IN 1918)
$$