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 2000
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 28 34 -1 31 0    W 5.0 16 WNW 91 111 10 F
2 39 28 34 -1 31 0 0.02   NE 3.5 10 NW 96 53 10 F, KFR 0730
3 36 33 34 -1 31 0 T   NW 5.0 11 NW 90 16 10  
4 36 32 34 -1 31 0    NW 4.7 11 NNW 85 26 10  
5 35 32 34 0 31 0    NW 3.0 10 NNW 81 17 10  
6 33 30 32 -2 33 0 T   NW 3.6 8 NNW 87 19 10  
7 34 30 32 -1 33 0    SW 2.9 9 NW 82 20 10  
8 32 30 31 -2 34 0 T   SE 3.1 9 SSE 88 26 10 GL
9 40 24 32 -1 33 0    SE 3.7 13 NW 86 133 4  
10 38 20 29 -3 36 0 T T  NW 4.5 20 N 79 86 6  1300
11 26 13 20 -12 45 0    NW 6.0 15 WNW 66 72 10  
12 25 15 20 -12 45 0    NW 5.6 16 WNW 66 68 8  
13 23 20 22 -9 43 0 0.09 1.3  NW 7.3 16 WNW 77 29 10 F
14 22 14 18 -13 47 0 0.15 1.9 1 NW 6.4 29 WNW 90 35 10 F, KFR 1730
15 41 13 27 -4 38 0   3 W 12.0 40 WSW 63 120 0  1415
16 44 19 32 +2 33 0   1 NW 8.5 45 WSW 71 85 10  1945
17 49 27 38 +8 27 0   1 W 14.3 45 W 58 131 0  
18 35 19 27 -3 38 0   T NW 5.8 16 WNW 86 92 9  
19 36 18 27 -3 38 0   T NW 4.5 19 WNW 86 85 6  
20 29 20 24 -6 41 0 T T T NW 6.9 18 NW 84 29 10 F
21 31 24 28 -2 37 0 0.08 1.4 T NW 5.6 15 NW 84 12 10 F
22 34 26 30 0 35 0 0.14 1.5 1 NW 4.5 13 WNW 94 82 10 F
23 33 30 32 +2 33 0 0.19 0.5 2 NW 5.7 15 WNW 97 44 10 F, GL, KFR 2030
24 32 26 29 -1 36 0   2 W 3.8 11 W 97 56 10 F
25 31 30 30 0 35 0   2 SE 3.6 9 SSE 97 50 10 F
26 33 30 32 +2 33 0   1 S 3.1 8 SSE 98 45 10 F
27 32 27 30 +1 35 0 T  1 NW 3.2 11 WNW 98 56 10 F, GL
28 33 31 32 +3 33 0   1 NW 5.2 11 WNW 90 38 10  
29 35 32 34 +6 31 0 T  1 NW 3.2 9 W 91 43 10 F
30 35 30 32 +4 33 0   1 N 2.9 8 NE 94 38 10 F
31 38 27 32 +4 33 0 T T T NW 3.5 10 WNW 90 62 10 F
SUM 1093 0 0.67 6.6
AVG 34.2 25.1 29.7 5.2 8.8
NOTES: PRECIPITATION (IN.) MISC. PHENOM. KEY
Daily summary period is midnight to midnight PST TOTAL FOR THE MONTH0.67 A-Hail, BD-Blowing Dust, BS-Blowing Snow
"T" in columns 7-9 denotes a trace DEPARTURE FROM NORM-0.36 D-Dust, AU-Aurora, DL-Distant Lightning
Snow in columns 8-9 is all frozen precipitation 24HR MAX0.22ON21-22 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) >= T14>= 0.250 BAROMETRIC PRESSURE (IN.)
AVERAGE FOR THE MONTH29.7 >= 0.016 >= 0.500 AVERAGE STATION29.465
DEPARTURE FROM NORMAL-1.7 >= 0.103 >= 1.000 MAX SEA-LEVEL30.70ON18
HIGHEST49 ON17 SNOW (FROZEN PRECIP.) (IN.) MIN SEA-LEVEL29.59ON15
LOWEST13 ON15+ TOTAL FOR THE MONTH6.6 SOLAR RADIATION (LANGLEYS)
NUMBER OF DAYS WITH: 24HR MAX2.9 ON21-22 AVERAGE DAILY TOTAL57.3
MAXIMUM 32 OR BELOW10 MAX ON GRND2.8 ON14 MAX DAILY133ON9
MAXIMUM 90 OR ABOVE0 WIND (50-FT LEVEL) MIN DAILY12 ON21
MINIMUM 32 OR BELOW30 AVERAGE SPEED (MPH)5.2 MISCELLANEOUS NUMBER OF DAYS
MINIMUM 0 OR BELOW0 DEPARTURE FROM NORM-0.7 CLEAR2 FOG15
HEATING DEGREE DAYS (BASE 65ºF) PEAK GUSTW @ 45ON17+ PARTLY CLOUDY 3 THDR0
TOTAL FOR THE MONTH1093 AVERAGE PSYCHROMETRIC DATA CLOUDY26DUST0
DEPARTURE FROM NORMAL+51 DRY BULB (ºF)30.0WET BULB (ºF)28.6 RELATIVE HUMIDITY EXTREMES (%)
SEASON TOTAL (SINCE JULY 1)2548 REL. HUM. (%)85.2DEW PT.(ºF)25.8 HIGHEST100ON31+
SEASON DEPARTURE FROM NORM+295 + DENOTES LATEST OF MULTIPLE DAYS LOWEST38 ON17