617
CXUS56 KSGX 010940
CLMRAL

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
240 AM PDT WED OCT 01 2025

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

...THE RIVERSIDE MUNI AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1893 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            117   09/06/2020
                       09/05/2020
                       07/28/1995
 LOW              37   09/15/1902
HIGHEST          101   09/16         91      10      115  09/06
LOWEST            60   09/12         61      -1       55  09/17
                                                          09/18
AVG. MAXIMUM    90.4               91.3    -0.9     92.4
AVG. MINIMUM    65.4               61.9     3.5     62.8
MEAN            77.9               76.6     1.3     77.6
DAYS MAX >= 90    16               18.9    -2.9       16
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MAX >= 45    30                                  30
DAYS MAX >= 120    0                                   0
DAYS MIN <= 32     0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        3.91   1963
 MINIMUM        0.00   2020
TOTALS          0.05               0.11   -0.06        T
DAILY AVG.      0.00               0.00   -0.00        T
DAYS >= .01        1                0.5     0.5        0
DAYS >= .10        0                0.1    -0.1        0
DAYS >= .50        0                0.0     0.0        0
DAYS >= 1.00       0                0.0     0.0        0
DAYS >= %-5.2F     0                                   0
DAYS >= %-5.2F     0                                   0
GREATEST
 24 HR. TOTAL   0.05   09/18 TO 09/18                  T  09/25 TO 09/25
                                                          09/25 TO 09/25
 STORM TOTAL    0.05                                0.00
 (MM/DD(HH))            MM


DEGREE DAYS
HEATING TOTAL      0                  2      -2        0
 SINCE 7/1         0                  0       0       MM
COOLING TOTAL    395                349      46      388
 SINCE 1/1      1776               1665     111       MM

FREEZE DATES
RECORD
 EARLIEST     10/21/1949
 LATEST       04/28/1894
EARLIEST                        01/17
LATEST                          01/02
................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.0
RESULTANT WIND SPEED/DIRECTION   4/270
HIGHEST WIND SPEED/DIRECTION    23/270    DATE  09/17
HIGHEST GUST SPEED/DIRECTION    MM        DATE   MM

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.18
NUMBER OF DAYS FAIR           21
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     56

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                2     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       2     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.

$$