Climatological Report (Monthly)
Issued by NWS
Issued by NWS
089
CXUS55 KBYZ 012115
CLMBHK
CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
314 PM MDT WED OCT 01 2025
...................................
...THE BAKER MT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1998 TO 2025
WEATHER OBSERVED NORMAL DEPART
VALUE DATE(S) VALUE FROM
NORMAL
................................................
TEMPERATURE (F)
HIGHEST 89 09/01
09/10
LOWEST 31 09/06
AVG. MAXIMUM 79.3 73.3 6.0
AVG. MINIMUM 47.2 44.0 3.2
MEAN 63.3 58.6 4.7
DAYS MAX >= 90 0
DAYS MAX <= 32 0
DAYS MIN <= 32 1
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
TOTALS 1.11 1.53 -0.42
DAYS >= .01 5
DAYS >= .10 2
DAYS >= .50 1
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.84 09/12 TO 09/12
DEGREE DAYS
HEATING TOTAL 92 230 -138
SINCE 7/1 139 286 -147
COOLING TOTAL 46 39 7
SINCE 1/1 455 466 -11
................................................
WIND (MPH)
AVERAGE WIND SPEED 7.7
HIGHEST WIND SPEED/DIRECTION 46/160 DATE 09/10
HIGHEST GUST SPEED/DIRECTION 64/160 DATE 09/10
AVERAGE RH (PERCENT) 60
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 5 MIXED PRECIP 0
HEAVY RAIN 2 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 8 FOG W/VIS <= 1/4 MILE 3
HAZE 7
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
&&
THIS IS AN AUTOMATED...UNATTENDED WEATHER STATION AND MAY
UNDERESTIMATE WINTER PRECIPITATION.
...SEPTEMBER 2025 MONTH IN REVIEW FOR BAKER...
BELOW IS A SUMMARY OF THE TEMPERATURE AND PRECIPITATION
STATISTICS FOR BAKER 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 MARCH 1998 AT OR NEAR THE BAKER AIRPORT.
NUMBERS DENOTED WITH AN * IS MISSING DATA IN THE CALCULATION.
... MONTHLY PRECIPITATION...
MONTH 2025 VALUES NORMALS DEPARTURE RANKING
SEPTEMBER 1.11 1.53 -0.42 ON THE MEDIAN OUT OF 28 YEARS
(WETTEST 5.18-2019/DRIEST 0.29-2022)
... SEPTEMBER 2025 BROKEN OR TIED DAILY PRECIPITATION RECORDS...
0.84 ON SEPTEMBER 12 (OLD RECORD 0.69 IN 1998)
NOTE: SINCE THE LATE 1990S...BAKER HAS BEEN AN AUTOMATED AND UNATTENDED
WEATHER STATION. PRECIPITATION AMOUNTS IN THE WINTER MAY BE UNDERESTIMATED.
... AVERAGE TEMPERATURES...
MONTH 2025 VALUES NORMALS DEPARTURE RANKING
SEPTEMBER 63.3 58.6 +4.7 4TH WARMEST OUT OF 28 YEARS
(RECORD WARMEST WAS 65.1 IN 2024)
(WARMEST SINCE 65.1 IN 2024)
... AVERAGE HIGH TEMPERATURES...
MONTH 2025 VALUES NORMALS DEPARTURE RANKING
SEPTEMBER 79.3 73.3 +6.0 4TH WARMEST OUT OF 28 YEARS
(RECORD WARMEST WAS 83.3 IN 2024)
(WARMEST SINCE 83.3 IN 2024)
... SEPTEMBER 2025 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...
85 ON SEPTEMBER 21 (OLD RECORD 81 IN 2001)
88 ON SEPTEMBER 30 (OLD RECORD 83 IN 2005)
... SEPTEMBER 2025 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...
62 ON SEPTEMBER 5 (OLD RECORD 66 IN 2008)
... AVERAGE LOW TEMPERATURES...
MONTH 2025 VALUES NORMALS DEPARTURE RANKING
SEPTEMBER 47.2 44.0 +3.2 5TH WARMEST OUT OF 28 YEARS
(RECORD WARMEST WAS 49.1 IN 2013)
(WARMEST SINCE 48.1 IN 2023)
... SEPTEMBER 2025 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...
58 ON SEPTEMBER 13 (OLD RECORD 56 IN 1998)
53 ON SEPTEMBER 29 (OLD RECORD 51 IN 2024)
... SEPTEMBER 2025 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...
36 ON SEPTEMBER 5 (TIED RECORD IN 1999)
31 ON SEPTEMBER 6 (OLD RECORD 36 IN 2008)
$$