CLIMATOLOGICAL DATA HANFORD METEOROLOGY STATION
25 MILES N.W. OF RICHLAND, WA
LATITUDE 46º 34'N, LONGITUDE 119º 36'W
ELEVATION (GROUND) 733 FEET		 MONTH:
December 2003
TEMPERATURE (ºF)
(3-FT LEVEL)		 PRECIPITATION WIND (50-FT LEVEL) FRONTS &
MISC PHENOM
D
A
T
E		 M
A
X
I
M
U
M
 M
I
N
I
M
U
M		 A
V
E
R
A
G
E		 D
E
P
A
R
T
U
R
E		 H
D
D
65
ºF		 C
D
D
65
ºF		 T
O
T
A
L

IN.		 S
N
O
W

IN.		 SNOW
ON
GRND
AT
0400

IN.		 P
R
E
V
A
I
L
DIR		 A
V
E
SPD

MPH		 PK
G
U
S
T
SPD

MPH		 PK
G
U
S
T
DIR		 A
V
E
RH
%		 S
O
L
A
R
A
D		 S
K
Y
C
V
R
SR
TO
SS		 NOTE:TYPES
AND TIMES
OF
FRONTAL
PASSAGES
"KFR"(COLD)
"WFR"(WARM)
1 41 32 36 0 29 0 0.32 T  NW 5.0 20 WNW 90 27 10  
2 38 34 36 +1 29 0 0.02   NW 2.4 9 ESE 98 14 10 F
3 50 30 40 +5 25 0 0.01   NW 7.5 22 NW 73 133 10 F,KFR 0330
4 38 28 33 -2 32 0 0.01 0.1  NW 9.6 21 WNW 72 42 10 WFR 1800
5 38 36 37 +3 28 0 0.03   NW 3.9 14 E 94 15 10 F
6 51 28 40 +6 25 0 0.01   W 4.1 36 SSW 80 117 1 F,KFR 0330
7 39 25 32 -1 33 0 0.03   NW 6.0 14 NW 95 43 10 F,GL
8 35 27 31 -2 34 0 T   NW 3.5 11 WNW 98 70 8 F,GL
9 39 31 35 +2 30 0 0.03 0.3  NW 8.6 18 WNW 85 23 10 F,GL
10 34 32 33 0 32 0 0.26 3.1 1 NW 7.8 16 WNW 98 62 10 F
11 37 29 33 0 32 0 0.01 0.1 2 W 4.1 10 ESE 95 85 8 F
12 33 28 30 -3 35 0 0.12 1.6 T NE 3.4 12 SSW 99 25 10 F,KFR 1300
13 36 28 32 -1 33 0 0.56   NW 5.0 18 NW 99 21 10 F
14 45 30 38 +5 27 0 T   W 6.7 25 WSW 80 104 4 F,KFR 0130
15 45 28 36 +4 29 0    W 5.3 22 WSW 73 86 9  
16 48 32 40 +8 25 0    NW 6.8 27 WSW 76 22 10 KFR 1415
17 42 29 36 +5 29 0    NW 8.0 22 NW 81 82 6  
18 43 24 34 +3 31 0    NW 7.8 17 WNW 82 117 0 F
19 37 23 30 0 35 0 0.05   S 2.7 10 NW 94 76 9 F,GL
20 34 31 32 +2 33 0 0.21 0.6 1 SE 2.2 9 WNW 98 30 10 F,GL,KFR 0100
21 35 32 34 +4 31 0 0.02   NW 3.2 11 NNW 95 15 10 F
22 38 33 36 +6 29 0    NW 7.1 18 WNW 90 18 10  
23 39 27 33 +3 32 0 0.02   NW 4.9 16 WNW 90 64 10 F
24 50 34 42 +12 23 0 0.09   W 5.0 25 W 84 83 7 F
25 47 33 40 +10 25 0    W 6.3 24 WNW 75 62 9 KFR 0830
26 44 23 34 +4 31 0    W 7.2 20 W 65 117 0  
27 30 20 25 -5 40 0 0.05 0.7  NW 4.1 14 NW 95 53 10 F
28 29 14 22 -7 43 0 T T 1 NW 5.3 19 NW 97 65 10 F
29 34 14 24 -5 41 0 0.05 0.6 1 NW 10.5 22 N 73 70 8 F,KFR 0700
30 23 8 16 -13 49 0   1 NW 4.8 11 SE 87 55 10  
31 28 17 22 -9 43 0 0.06 0.9 1 SW 3.4 10 NW 87 64 10 F,KFR 0800
SUM 993 0 1.96 8.0
AVG 38.7 27.1 32.9 5.6 8.0
NOTES: PRECIPITATION (IN.) MISC. PHENOM. KEY
Daily summary period is midnight to midnight PST TOTAL FOR THE MONTH1.96 A-Hail, BD-Blowing Dust, BS-Blowing Snow
"T" in columns 7-9 denotes a trace DEPARTURE FROM NORM+0.85 D-Dust, AU-Aurora, DL-Distant Lightning
Snow in columns 8-9 is all frozen precipitation 24HR MAX0.56ON13 F-Fog, IC-Ice Crystals, K-Smoke
Solrad in column 15 is in Langleys; g-cal/sq. cm NUMBER OF DAYS WITH: GL-Glaze, T-Thunderstorm, DS-Drifting Snow
TEMPERATURE (ºF) (3-FT LEVEL) >= T23>= 0.253 BAROMETRIC PRESSURE (IN.)
AVERAGE FOR THE MONTH32.9 >= 0.0120>= 0.501 AVERAGE STATION29.237
DEPARTURE FROM NORMAL+1.2 >= 0.105 >= 1.000 MAX SEA-LEVEL30.52ON17
HIGHEST51 ON6 SNOW (FROZEN PRECIP.) (IN.) MIN SEA-LEVEL29.49ON24
LOWEST8 ON30 TOTAL FOR THE MONTH8.0 SOLAR RADIATION (LANGLEYS)
NUMBER OF DAYS WITH: 24HR MAX3.2 ON9-10 AVERAGE DAILY TOTAL59.9
MAXIMUM 32 OR BELOW4 MAX ON GRND2.0 ON11 MAX DAILY133ON3
MAXIMUM 90 OR ABOVE0 WIND (50-FT LEVEL) MIN DAILY14 ON2
MINIMUM 32 OR BELOW26 AVERAGE SPEED (MPH)5.6 MISCELLANEOUS NUMBER OF DAYS
MINIMUM 0 OR BELOW0 DEPARTURE FROM NORM-0.5 CLEAR4 FOG22
HEATING DEGREE DAYS (BASE 65ºF) PEAK GUSTSSW @ 36ON6 PARTLY CLOUDY3 THDR0
TOTAL FOR THE MONTH993 AVERAGE PSYCHROMETRIC DATA CLOUDY24DUST0
DEPARTURE FROM NORMAL-39 DRY BULB (ºF)33.2WET BULB (ºF)31.8 RELATIVE HUMIDITY EXTREMES (%)
SEASON TOTAL (SINCE JULY 1)2125 REL. HUM. (%)87.0DEW PT.(ºF)29.5 HIGHEST100ON28+
SEASON DEPARTURE FROM NORM-114 + DENOTES LATEST OF MULTIPLE DAYS LOWEST37 ON3