119
CXUS55 KBOI 011817
CLMBOI

CLIMATE REPORT
NATIONAL WEATHER SERVICE BOISE ID
1129 AM MDT THU MAY 01 2025

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

APRIL 2025 IN BOISE, IDAHO, SAW RELATIVELY MILD SPRING WEATHER, WITH
TEMPERATURES SLIGHTLY ABOVE THE HISTORICAL AVERAGE. THE HIGHEST
RECORDED TEMPERATURE WAS 81F ON APRIL 10, MARKING A BRIEF WARM
SPELL DURING THE MONTH. HOWEVER, THE MONTH BEGAN WITH COOLER
CONDITIONS, AS THE LOWEST TEMPERATURE REACHED 30F ON BOTH APRIL 3
AND APRIL 4. THE AVERAGE MAXIMUM TEMPERATURE FOR THE MONTH WAS
64.6F, WHILE THE AVERAGE MINIMUM TEMPERATURE WAS 39.8F, INDICATING
THAT NIGHTS REMAINED COOL, THOUGH NOT EXTREME. OVERALL, BOISE
EXPERIENCED A MEAN TEMPERATURE OF 52.2F, WHICH WAS ABOUT 1.3F
HIGHER THAN THE 19912020 AVERAGE FOR THE REGION, REFLECTING A
SLIGHTLY WARMER-THAN-USUAL SPRING.

PRECIPITATION WAS SIGNIFICANTLY BELOW NORMAL FOR THE MONTH, WITH
ONLY 0.43 INCHES RECORDED. THIS WAS A DEPARTURE OF 0.80 INCHES LESS
THAN THE TYPICAL PRECIPITATION FOR BOISE IN APRIL, INDICATING THAT
THE AREA EXPERIENCED A DRIER-THAN-USUAL SPRING. THE NUMBER OF DAYS
WITH MEASURABLE PRECIPITATION WAS RELATIVELY LOW, WITH ONLY SIX DAYS
REPORTING RAIN. OF THESE, ONLY TWO DAYS SAW RAINFALL AMOUNTS GREATER
THAN 0.10 INCHES. THE GREATEST 24-HOUR RAINFALL OCCURRED FROM MARCH
31 TO APRIL 1, WHEN BOISE RECORDED 0.28 INCHES OF RAIN. SNOWFALL WAS
ALMOST NONEXISTENT, WITH ONLY A TRACE AMOUNT REPORTED THROUGHOUT THE
MONTH, AND THERE WERE NO DAYS WITH MEASURABLE SNOW. THIS IS
CONSISTENT WITH THE SEASONAL TRANSITION FROM WINTER TO SPRING, WHERE
SNOW TYPICALLY BECOMES LESS FREQUENT.

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

...THE BOISE ID CLIMATE SUMMARY FOR THE MONTH OF APRIL 2025...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1875 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
HIGHEST           81   04/10
LOWEST            30   04/03
                       04/04
AVG. MAXIMUM    64.6               62.3     2.3
AVG. MINIMUM    39.8               39.6     0.2
MEAN            52.2               50.9     1.3
DAYS MAX >= 90     0
DAYS MAX <= 32     0
DAYS MIN <= 32     3
DAYS MIN <= 0      0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        4.73   1869
TOTALS          0.43               1.23   -0.80
DAYS >= .01        6
DAYS >= .10        2
DAYS >= .50        0
DAYS >= 1.00       0
GREATEST
 24 HR. TOTAL   0.28   03/31 TO 04/01

SNOWFALL (INCHES)
TOTALS             TR
SINCE 7/1       13.6
GREATEST
 SNOW DEPTH        0
 24 HR TOTAL      MM

DEGREE DAYS
HEATING TOTAL    376                424     -48      391
 SINCE 7/1      4732               5057    -325
COOLING TOTAL      0                  3      -3        2
 SINCE 1/1         0                  3      -3
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              7.6
HIGHEST WIND SPEED/DIRECTION    32/320    DATE  04/17
HIGHEST GUST SPEED/DIRECTION    44/320    DATE  04/17

AVERAGE RH (PERCENT)     48


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

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