Climatological Report (Monthly)
Issued by NWS Billings, MT
Issued by NWS Billings, MT
748
CXUS55 KBYZ 011317
CLMSHR
CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
715 AM MDT MON JUN 01 2026
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...THE SHERIDAN WY CLIMATE SUMMARY FOR THE MONTH OF MAY 2026...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1907 TO 2026
WEATHER OBSERVED NORMAL DEPART
VALUE DATE(S) VALUE FROM
NORMAL
................................................
TEMPERATURE (F)
HIGHEST 95R 05/13
LOWEST 16 05/06
AVG. MAXIMUM 69.2 66.1 3.1
AVG. MINIMUM 37.1 38.7 -1.6
MEAN 53.1 52.4 0.7
DAYS MAX >= 90 1
DAYS MAX <= 32 0
DAYS MIN <= 32 10
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
TOTALS 2.34 2.68 -0.34
DAYS >= .01 8
DAYS >= .10 5
DAYS >= .50 2
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 1.48 05/30 TO 05/31
DEGREE DAYS
HEATING TOTAL 376 394 -18
SINCE 7/1 6016 7405 -1389
COOLING TOTAL 17 4 13
SINCE 1/1 17 4 13
................................................
WIND (MPH)
AVERAGE WIND SPEED 8.2
HIGHEST WIND SPEED/DIRECTION 43/320 DATE 05/16
HIGHEST GUST SPEED/DIRECTION 62/290 DATE 05/16
AVERAGE RH (PERCENT) 57
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 5 MIXED PRECIP 0
HEAVY RAIN 3 RAIN 5
LIGHT RAIN 10 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 1 SLEET 0
FOG 7 FOG W/VIS <= 1/4 MILE 0
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
&&
...MAY 2026 MONTH IN REVIEW FOR SHERIDAN...
BELOW IS A SUMMARY OF THE TEMPERATURE AND PRECIPITATION
STATISTICS FOR SHERIDAN FOR MAY 2026. 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 2026 VALUES NORMALS DEPARTURE RANKING
MAY 2.34 2.68 -0.34 59TH DRIEST OUT OF 120 YEARS
(RECORD DRIEST WAS 0.15 IN 1936)
(DRIEST SINCE 2.07 IN 2023)
...SHERIDAN MAY 2026 BROKEN OR TIED DAILY PRECIPITATION RECORDS...
NONE
...SHERIDAN AVERAGE TEMPERATURES...
MONTH 2026 VALUES NORMALS DEPARTURE RANKING
MAY 53.2 52.4 +0.8 TIED FOR THE 52ND WARMEST OUT OF 120 YEARS
(RECORD WARMEST WAS 61.4 IN 1934)
(WARMEST SINCE 54.0 IN 2025)
...SHERIDAN AVERAGE HIGH TEMPERATURES...
MONTH 2026 VALUES NORMALS DEPARTURE RANKING
MAY 69.2 66.1 +3.1 27TH WARMEST OUT OF 120 YEARS
(RECORD WARMEST WAS 78.7 IN 1934)
(WARMEST SINCE 71.8 IN 2023)
...SHERIDAN MAY 2026 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...
95 ON MAY 13 (OLD RECORD 93 IN 2001)
...SHERIDAN MAY 2026 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...
42 ON MAY 18 (OLD RECORD 44 IN 2019)
...SHERIDAN AVERAGE LOW TEMPERATURES...
MONTH 2026 VALUES NORMALS DEPARTURE RANKING
MAY 37.1 38.7 -1.6 TIED FOR THE 20TH COLDEST OUT OF 120 YEARS
(RECORD COLDEST WAS 34.8 IN 1909)
(COLDEST SINCE 36.0 IN 2019)
...SHERIDAN MAY 2026 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...
61 ON MAY 28 (OLD RECORD 57 IN 1936)
...SHERIDAN MAY 2026 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...
22 ON MAY 5 (OLD RECORD 24 IN 1996)
16 ON MAY 6 (OLD RECORD 24 IN 1909)
21 ON MAY 19 (OLD RECORD 27 IN 1931)
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