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 2005
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 32 23 28 -8 37 0 0.15 1.6 1 NW 8.0 19 WNW 88 42 10 F,KFR 1500
2 36 18 27 -8 38 0   1 NW 3.7 15 WSW 92 92 8 F
3 35 14 24 -11 41 0   1 S 4.2 12 SSE 92 152 5 F
4 25 13 19 -15 46 0   1 N 2.2 9 ENE 98 31 10 F
5 28 23 26 -8 39 0   1 NW 3.8 15 WNW 96 47 10 F,Hoarfrost
6 34 19 26 -7 39 0   1 NE 3.2 8 E 82 70 10  
7 28 14 21 -12 44 0   1 NW 5.8 15 N 76 125 8  
8 27 10 18 -15 47 0   1 S 4.6 12 WNW 78 154 3  
9 25 10 18 -15 47 0   1 W 4.7 10 WSW 88 86 8 F
10 28 11 20 -13 45 0   1 SW 3.6 10 W 84 122 7  
11 29 9 19 -14 46 0   1 SW 2.7 7 S 87 157 4 F
12 19 9 14 -19 51 0   1 SE 2.9 9 SSE 93 38 10 F
13 22 19 20 -13 45 0   1 SW 3.3 9 WNW 94 38 10 F
14 22 19 20 -13 45 0   1 W 4.1 11 W 93 26 10 F
15 24 21 22 -10 43 0 T T 1 E 3.6 10 NNW 91 14 10 F
16 23 21 22 -10 43 0 T T 1 SE 2.8 8 SE 89 28 10 F
17 28 9 18 -13 47 0   1 NE 5.5 16 NE 77 100 2  
18 27 4 16 -15 49 0   1 NW 5.6 12 SSE 74 136 0  
19 30 25 28 -2 37 0 0.07 0.8 1 NW 7.7 16 WNW 86 41 10 F,GL
20 35 25 30 0 35 0 0.01  1 NW 4.2 12 W 91 45 10 GL
21 36 26 31 +1 34 0 0.20  1 W 3.3 10 WNW 97 62 10 F,GL,KFR 2040
22 41 30 36 +6 29 0 0.08  1 NW 3.8 13 SE 99 47 10 F,KFR 1700
23 50 34 42 +12 23 0 0.06  0 NW 6.6 35 W 87 53 10 WFR 2000
24 40 34 37 +7 28 0    W 3.4 12 WNW 100 37 10 F
25 48 31 40 +10 25 0 0.02   NW 4.8 15 ESE 94 41 10 F
26 50 33 42 +12 23 0 0.09   W 5.2 27 WSW 88 82 10 KFR 0840
27 42 35 38 +8 27 0 0.18   NW 5.1 19 E 93 23 10 KFR 0835
28 42 33 38 +9 27 0 0.26   NW 8.4 21 WNW 94 35 10 KFR 1245
29 49 30 40 +11 25 0 0.04   NW 4.2 17 W 89 112 6  
30 37 32 34 +5 31 0 0.54   NW 7.7 19 WNW 98 21 10 F
31 39 32 36 +8 29 0 0.31   NW 6.1 22 NW 97 36 10 F,KFR 1430
SUM 1165 0 2.01 2.4
AVG 33.3 21.5 27.4 4.7 8.4
NOTES: PRECIPITATION (IN.) MISC. PHENOM. KEY
Daily summary period is midnight to midnight PST TOTAL FOR THE MONTH2.01 A-Hail, BD-Blowing Dust, BS-Blowing Snow
"T" in columns 7-9 denotes a trace DEPARTURE FROM NORM+0.90 D-Dust, AU-Aurora, DL-Distant Lightning
Snow in columns 8-9 is all frozen precipitation 24HR MAX0.56ON29-30 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) >= T15>= 0.253 BAROMETRIC PRESSURE (IN.)
AVERAGE FOR THE MONTH27.4 >= 0.0113>= 0.501 AVERAGE STATION29.344
DEPARTURE FROM NORMAL-4.3 >= 0.106 >= 1.000 MAX SEA-LEVEL30.70ON10
HIGHEST50 ON26+ SNOW (FROZEN PRECIP.) (IN.) MIN SEA-LEVEL29.20ON31
LOWEST4 ON18 TOTAL FOR THE MONTH2.4 SOLAR RADIATION (LANGLEYS)
NUMBER OF DAYS WITH: 24HR MAX1.6 ON1 AVERAGE DAILY TOTAL67.5
MAXIMUM 32 OR BELOW16 MAX ON GRND1.6 ON1 MAX DAILY157ON11
MAXIMUM 90 OR ABOVE0 WIND (50-FT LEVEL) MIN DAILY14 ON15
MINIMUM 32 OR BELOW26 AVERAGE SPEED (MPH)4.7 MISCELLANEOUS NUMBER OF DAYS
MINIMUM 0 OR BELOW0 DEPARTURE FROM NORM-1.4 CLEAR3 FOG19
HEATING DEGREE DAYS (BASE 65ºF) PEAK GUSTW @ 35ON23 PARTLY CLOUDY4 THDR0
TOTAL FOR THE MONTH1165 AVERAGE PSYCHROMETRIC DATA CLOUDY24DUST0
DEPARTURE FROM NORMAL+133 DRY BULB (ºF)27.4WET BULB (ºF)26.7 RELATIVE HUMIDITY EXTREMES (%)
SEASON TOTAL (SINCE JULY 1)2347 REL. HUM. (%)89.8DEW PT.(ºF)24.8 HIGHEST100ON31+
SEASON DEPARTURE FROM NORM+108 + DENOTES LATEST OF MULTIPLE DAYS LOWEST50 ON18