4-7月圣地亚哥的气候?

4-7月圣地亚哥的气候?
4-7月圣地亚哥的气候?

4-7月圣地亚哥的气候?
气候如下：
　　APRIL WEATHER IN SAN DIEGO
　　TEMPERATURES CONTINUE TO RISE SLOWLY THROUGH APRIL AND THE MONTHLY
　　MEAN OF DEGREES IS DEGREES ABOVE THAT OF MARCH. THE
　　AVERAGE DAILY MAXIMUM IS DEGREES AND THE AVERAGE DAILY
　　MINIMUM IS DEGREES. IN SOME APRILS THERE HAVE BEEN DAYS
　　WITH HOT, DRY WINDS AND TEMPERATURES WELL IN EXCESS OF 80
　　DEGREES. ON 11 SUCH OCCURRENCES, 90 DEGREES OR HIGHER HAS BEEN
　　RECORDED AT THE NATIONAL WEATHER SERVICE. THE EXTREMES FOR THE
　　MONTH ARE 98 DEGREES IN 1989 AND 39 DEGREES IN 1875.
　　SHOWERS RATHER THAN PROLONGED RAINS HAVE BEEN THE RULE. THESE
　　HAVE OCCURRED ON AN AVERAGE OF 5 DAYS DURING THE MONTH. NORMAL
　　RAINFALL FOR THE MONTH IS INCH HOWEVER IN 1926 THE EXCEPTIONALLY
　　LARGE TOTAL OF INCHES WAS RECORDED OF WHICH INCHES FELL
　　IN ONE DAY. THIS IS ONE OF THE HEAVIEST 24 HOUR RAINFALL AMOUNTS
　　EVER MEASURED IN THE CITY. ONLY THREE TIMES SINCE 1850 HAS THE
　　MONTH BEEN WITHOUT MEASURABLE RAINFALL.
　　STRONG WINDS HAVE BEEN OF SHORT DURATIONS AND RARELY OVER 30 MPH,
　　BUT ONCE IN 1915 A VELOCITY OF 46 MPH WAS REGISTERED AT THE
　　NATIONAL WEATHER SERVICE.
　　AS A RULE APRIL USHERS IN THE NIGHT AND EARLY MORNING LOW CLOUDS
　　SO CHARACTERISTIC OF OUR SUMMER AND FALL MONTHS, BUT THE
　　PERCENTAGE OF SUNSHINE IS LITTLE AFFECTED BY THE CLOUDINESS AND
　　THE AVERAGE OF 66 PERCENT OF POSSIBLE SUNSHINE IS ONLY SLIGHTLY
　　BELOW THAT OF THE PRECEDING MONTHS. CLEAR DAYS AVERAGE 10,
　　PARTLY CLOUDY 10 AND CLOUDY 10. THERE IS AN AVERAGE OF 1 DAY OF
　　HEAVY FOG. THE RELATIVE HUMIDITY AVERAGES 76 PERCENT IN THE
　　EARLY MORNING, 60 PERCENT NEAR NOON AND 59 PERCENT IN THE LATE
　　AFTERNOON.
　　MAY WEATHER IN SAN DIEGO
　　MAY IS NORMALLY CHARACTERIZED BY PERSISTENT OVERCAST SKIES DURING
　　THE NIGHT AND MORNING HOURS AND BY LESS SUNSHINE THAN ANY OTHER
　　MONTH EXCEPT JUNE. TEMPERATURES CONTINUE THEIR UPWARD TREND WITH
　　THE MOST NOTICEABLE RISE IN NIGHTTIME READINGS. THE NORMAL DAILY
　　MAXIMUM FOR THE MONTH IS DEGREES...THE NORMAL DAILY MINIMUM
　　DEGREES AND THE MEAN DEGREES. ON TEN DAYS THE RECORD
　　MAXIMUM TEMPERATURES ARE IN THE 90S AND WAS 98 DEGREES ON MAY 25...
　　1896 THE ABSOLUTE HIGH FOR MAY. HOWEVER...THE COOL SEA BREEZE
　　PREVAILS NEARLY EVERY DAY AND TEMPERATURES ABOVE 80 DEGREES
　　RARELY HAVE BEEN REACHED. NIGHTS ARE UNIFORMLY MILD AND THE
　　LOWEST READING DURING THE MONTH WAS 45 DEGREES IN 1915.
　　OUR LONG DRY SEASON USUALLY BEGINS IN MAY AND THE AVERAGE NUMBER
　　OF DAYS WITH MEASURABLE RAIN IS 2 WITH AN AVERAGE MONTHLY TOTAL OF
　　INCH. HOWEVER...ON 3 OCCASIONS THE MONTHLY TOTAL HAS EXCEEDED
　　2 INCHES WITH THE GREATEST RAINFALL INCHES IN 1921.
　　STORMY WEATHER IS ALMOST UNKNOWN DURING THE MONTH AND WINDS OVER
　　20 MPH HAVE BEEN INFREQUENT. ONLY TWICE HAVE WINDS OVER 30 MPH
　　BEEN RECORDED AT THE NATIONAL WEATHER SERVICE OFFICE. THE HIGHEST
　　WIND EVER RECORDED IN MAY WAS 40 MPH ON MAY 29...1988. THE OTHER
　　TIME WINDS OVER 30 MPH WERE RECORDED WAS IN 1922 WHEN WINDS OF
　　37 MPH WERE REGISTERED
　　ALTHOUGH SKIES ARE COMMONLY OVERCAST DURING THE NIGHT AND MORNING
　　HOURS...HEAVY FOG IS RARE...THE AVERAGE BEING ONLY 1 EACH MAY.
　　CLEAR DAYS NUMBER 8...PARTLY CLOUDY 12 AND CLOUDY 11. POSSIBLE SUN
　　SHINE IS 58 PERCENT ON ANY GIVEN DAY...ABOUT 11 PERCENT LESS
　　THAN THE WINTER DAYS AVERAGE. MAY AND JUNE ARE THE CLOUDIEST MONTHS
　　OF THE YEAR WHICH IS A PARADOX BECAUSE THEY ARE TWO OF THE 5
　　DRIEST MONTHS OF THE YEAR. RELATIVE HUMIDITY SHOWS LITTLE CHANGE
　　FROM APRIL WITH HUMIDITY IN THE EARLY MORNING 77 PERCENT...NEAR
　　NOON 65 PERCENT AND IN THE AFTERNOON 64 PERCENT.
　　JUNE WEATHER IN SAN DIEGO
　　TEMPERATURE IN JUNE CONTINUES THE SLOW RISE OF PRECEDING MONTHS
　　AND THE MEAN OF IS DEGREES ABOVE THE MEAN FOR MAY. THE
　　DAILY MAXIMUM AVERAGES DEGREES AND THE DAILY MINIMUM
　　DEGREES. CHANGES FROM DAY TO DAY NORMALLY HAVE BEEN SMALL AND
　　12 DAYS SINCE 1872 HAVE HAD A MAXIMUM 90 DEGREES OR
　　HIGHER. THE ABSOLUTE HIGH IS 101 DEGREES IN 1979. THE ABSOLUTE
　　LOW IS 50 DEGREES WHICH LAST OCCURRED IN 1943.
　　WELL INTO THE DRY SEASON, JUNE AVERAGES ONLY ONE DAY WITH
　　MEASURABLE RAIN AND A MONTHLY AVERAGE OF INCH. ONLY TWICE
　　SINCE 1850 HAS THE MONTHLY TOTAL EXCEEDED ONE HALF INCH. THIS
　　WAS IN 1850 WITH INCH AND 1990 WITH INCH.
　　JUNE IS A QUIET MONTH AT SAN DIEGO-LINDBERGH FIELD. STRONG WINDS HAVE
　　NOT BEEN MEASURED AND THE HIGHEST VELOCITY EVER RECORDED AT THE
　　AIRPORT WEATHER SERVICE OFFICE WAS 27 MPH. THUNDERSTORMS WILL
　　OCCASIONALLY DEVELOP IN THE MOUNTAINS AND DESERTS WITH MONSOONAL
　　MOISTURE.
　　JUNE IS NORMALLY THE CLOUDIEST MONTH OF THE YEAR WITH ONLY 57
　　PERCENT OF POSSIBLE SUNSHINE DUE LARGELY TO THE PERSISTENCE OF
　　OVERCAST SKIES DURING THE MORNING HOURS. CLEAR DAYS AVERAGE 9,
　　PARTLY CLOUDY 12 AND CLOUDY 9. THERE IS AN AVERAGE OF 1 DAY OF
　　HEAVY FOG. RELATIVE HUMIDITIES SHOW A SLIGHT INCREASE OVER
　　PREVIOUS MONTHS WITH AVERAGES OF 81 PERCENT NEAR SUNRISE, 69
　　PERCENT NEAR NOON AND 66 PERCENT NEAR 4 PM.
　　JULY WEATHER IN SAN DIEGO
　　NIGHT AND MORNING CLOUDINESS CONTINUES THROUGH JULY...BUT
　　AFTERNOONS ARE GENERALLY