KINGDOM OF SAUDI ARABIA
MINISTRY OF DEFENCE & AVIATION
PRESIDENCY OF METEOROLOGY & ENVIRONMENT PROTECTION
NATIONAL METEOROLOGY & ENVIRONMENT CENTER
SURFACE ANNUAL CLIMATOLOGICAL REPORT
المملكة العربية السعودية
وزارة الدفاع و الطيران
الرئاسة العامة للأرصادوحماية البيئة
المركزالوطني للأرصاد والبيئة
PROVISIONAL NORMALS FROM: 1980 To 2007
Station No.: 40438 Station Name: Riyadh Old LAT: 24 42 40N LONG: 46 44 18E Elevation: 619.63 METER
Temperature (Deg. C) Relative
Humidity
(%)
Surface Wind(Kts) Pressure(hPa) Precipitation (mm)


Mean Extremes Prev
Dir
Maximum
Speed
Vap
-or
Station
Level
Sea
Level
24 Hours Total

Monthly
Mo MX MN M MX YY DD MN YY DD MX MN M
M MX DDD M M M M Ext. YY Ext. YY DD
01 20.2 9.0 14.4 31.5 2006 27 - .5 1989 07 100 3 47 SSE 6 35 16 7.5 948.2 1020 11.7 54.6 1993 25.7 1993 12
02 23.0 11.0 16.9 34.8 2006 08 .5 1989 07 100 4 38 SSE 7 31 18 7.1 946.6 1017.6 8.5 53.9 2005 37.5 2005 25
03 27.3 15.0 21.1 38.0 1980 28 4.5 1992 04 100 3 34 SSE 7 55 30 8.0 944.4 1014.2 24.7 108.9 1995 52.5 1995 21
04 33.3 20.3 26.8 42.0 1999 27 11.0 1989 01 100 3 28 SSE 7 70 35 9.0 942.7 1010.9 22.3 106.6 1986 30.0 1995 28
05 39.1 25.7 32.7 45.1 1998 28 18.0 1990 14 95 1 17 N 6 51 32 7.8 940.2 1007 4.6 39.5 1993 29.5 1993 12
06 42.4 27.6 35.4 47.0 2003 11 16.0 2004 17 45 1 11 N 7 40 35 5.8 936.4 1002.3 0.0 0.0 .0
07 43.5 29.1 36.6 48.0 1987 25 23.6 1991 03 54 2 10 N 7 40 10 6.1 934.0 998.5 0.0 0.3 1980 .3 1980 20
08 43.2 28.8 36.3 47.8 1998 07 22.7 1989 26 64 2 12 N 6 *** 7 7.1 935.2 1000.8 0.2 5.6 1998 5.6 1998 28
09 40.3 25.7 33.2 44.5 1999 01 16.1 1989 22 70 1 14 N 5 30 1 6.7 939.7 1006.3 0.0 0.0 .0
10 35.0 20.9 28.1 41.0 1987 03 13.0 1984 21 92 3 21 SSE 4 35 35 7.4 944.8 1012.9 1.7 27.1 1982 10.2 1982 13
11 27.7 15.4 21.4 36.0 2006 04 7.0 1988 15 100 2 36 SSE 5 *** 30 8.7 947.5 1017.3 7.9 98.0 1997 45.8 1997 02
12 22.0 10.6 16.1 31.0 1991 12 1.4 1990 29 100 4 47 SSE 5 30 30 8.3 948.7 1019 13.0 97.8 2003 70.0 2003 03
MX 43.5 48.0 100 *** 108.9 70.0
MN 9.0 - .5 1
M 26.6 26 6 7.5 942.4 1010.6 7.9
Number of Days with Occurrence of following Weather Phenomena
LAT,N=Latitude in Degrees Minutes and Seconds, North of the Equator
LONG,E=Longitude in Degrees Minutes and Seconds, East of Greenwich
mm=Millimeter
Ext=Extreme
Kts=Knots
YY=Year
DD=Day
Press=Pressure
Dir=Direction in 16 points Compass
DDD=Direction in Degrees
hPa=Hectopascal
Deg C=Degrees Celcius
MO=Month,
MX=Maximum
MN=Minimum
AVG=Average
M=Mean
PREV=Prevailing
Precip=Precipitation
Month Thunder
Storm
Precip Mist Fog Blowing
Dust
Dust/Sand
Storm
Haze
01 .9 05.8 04.7 0.9 02.8 0.1 12.4
02 2.2 04.8 02.5 0.3 05.2 0.5 14.0
3.7 09.8 02.0 0.1 06.8 0.9 16.5
03
04 4.4 10.0 00.9 0.0 08.1 1.4 17.2
05 1.9 03.5 00.1 0.0 08.4 1.3 21.0
06 .1 00.0 00.0 0.0 06.0 0.3 17.0
07 .0 00.2 00.0 0.0 05.8 0.3 16.4
08 .2 00.2 00.0 0.0 04.6 0.2 15.0
09 .1 00.0 00.0 0.0 02.8 0.0 12.3
10 .3 01.2 00.4 0.0 01.8 0.2 12.3
11 .7 03.4 02.2 0.0 02.9 0.2 11.7
12 1.3 06.3 04.8 0.8 02.3 0.0 12.8
Total 15.8 45.2 17.6 2.1 57.5 5.4 *****