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:
January 1998
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 57 32 44 +16 21 0    SW 9.0 41 SSW 80 62 10 F
2 47 28 38 +10 27 0    NW 10.0 32 SW 51 137 7 KFR 0055
3 33 26 30 +2 35 0 0.11 1.3 0.3 NW 8.4 25 WNW 81 43 10 F
4 43 24 34 +5 31 0   0.8 NW 5.8 21 WNW 84 139 2 F, KFR 0100
5 52 30 41 +12 24 0   T S 15.8 42 SSW 57 142 5  
6 49 42 46 +17 19 0 0.02   S 16.9 41 SSW 56 19 10  
7 52 32 42 +13 23 0 0.11   W 7.9 26 WSW 72 121 1 F
8 44 22 33 +4 32 0    NW 6.8 20 NNW 65 136 2  
9 35 19 27 -2 38 0    NW 8.3 15 NW 62 118 4  
10 28 20 24 -6 41 0 T T  NW 8.2 18 NNE 67 26 10  
11 22 13 18 -12 47 0 0.14 2.3  W 7.6 16 WNW 76 33 10 F
12 19 11 15 -16 50 0 0.06 1.0 1.8 NW 6.1 14 NW 78 55 10 F
13 24 7 16 -15 49 0   2.6 NW 4.6 12 WNW 81 109 10  
14 45 21 33 +1 32 0 0.17 1.2 3.6 NW 5.6 32 W 88 47 10 F,GL, KFR 1400
15 49 26 38 +5 27 0   2.8 SW 6.9 36 W 71 143 1  
16 38 26 32 -1 33 0 0.34 0.3 2.2 NW 4.8 15 NW 95 65 10 F, KFR 0510
17 57 33 45 +12 20 0 0.06  1.0 S 9.6 41 WSW 63 148 4 F, KFR 0100
18 46 37 42 +9 23 0 0.01   NW 12.4 24 WNW 64 78 10  
19 57 39 48 +15 17 0 T   W 8.9 23 WSW 62 110 10  
20 52 27 40 +7 25 0    W 5.3 15 WSW 75 151 2  
21 35 26 30 -3 35 0 0.01 0.2  NW 3.6 10 NW 95 26 10 F, KFR 2200
22 32 28 30 -3 35 0 0.02  T NW 5.0 12 W 98 26 10 F, GL
23 49 32 40 +8 25 0 0.13   W 6.4 22 WSW 92 21 10 F, KFR 2000
24 52 40 46 +14 19 0    SW 9.3 43 SW 66 46 10 KFR 1500
25 50 31 40 +8 25 0 0.01   NW 7.0 21 WNW 83 102 10 KFR 1800
26 48 33 40 +8 25 0 0.03   NW 5.9 14 WNW 89 85 10  
27 51 34 42 +10 23 0 0.02   NW 4.1 11 WNW 92 87 10 F
28 50 35 42 +10 23 0    NW 11.1 23 WNW 82 116 10 F
29 49 34 42 +10 23 0 T   NW 6.6 17 WNW 79 73 10 F
30 52 31 42 +10 23 0    NW 7.9 20 NW 86 184 2 F
31 51 35 43 +11 22 0    NW 7.5 18 WNW 75 173 3  
SUM 892 0 1.24 6.3
AVG 44.1 28.2 36.1 7.8 7.5
NOTES: PRECIPITATION (IN.) MISC. PHENOM. KEY
Daily summary period is midnight to midnight PST TOTAL FOR THE MONTH1.24 A-Hail, BD-Blowing Dust, BS-Blowing Snow
"T" in columns 7-9 denotes a trace DEPARTURE FROM NORM+0.45 D-Dust, AU-Aurora, DL-Distant Lightning
Snow in columns 8-9 is all frozen precipitation 24HR MAX0.40ON16-17 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) >= T18>= 0.251 BAROMETRIC PRESSURE (IN.)
AVERAGE FOR THE MONTH36.1 >= 0.0115>= 0.500 AVERAGE STATION29.071
DEPARTURE FROM NORMAL+4.8 >= 0.106 >= 1.000 MAX SEA-LEVEL29.11ON12+
HIGHEST57 ON19+ SNOW (FROZEN PRECIP.) (IN.) MIN SEA-LEVEL29.38ON1
LOWEST7 ON13 TOTAL FOR THE MONTH6.3 SOLAR RADIATION (LANGLEYS)
NUMBER OF DAYS WITH: 24HR MAX2.3 ON11 AVERAGE DAILY TOTAL91.0
MAXIMUM 32 OR BELOW5 MAX ON GRND3.6 ON14 MAX DAILY184ON30
MAXIMUM 90 OR ABOVE0 WIND (50-FT LEVEL) MIN DAILY19 ON6
MINIMUM 32 OR BELOW21 AVERAGE SPEED (MPH)7.8 MISCELLANEOUS NUMBER OF DAYS
MINIMUM 0 OR BELOW0 DEPARTURE FROM NORM+1.3 CLEAR7 FOG16
HEATING DEGREE DAYS (BASE 65ºF) PEAK GUSTSW @ 43ON24 PARTLY CLOUDY4 THDR0
TOTAL FOR THE MONTH892 AVERAGE PSYCHROMETRIC DATA CLOUDY20DUST0
DEPARTURE FROM NORMAL-152 DRY BULB (ºF)35.7WET BULB (ºF)32.9 RELATIVE HUMIDITY EXTREMES (%)
SEASON TOTAL (SINCE JULY 1)2898 REL. HUM. (%)76.3DEW PT.(ºF)28.4 HIGHEST100ON27+
SEASON DEPARTURE FROM NORM-399 + DENOTES LATEST OF MULTIPLE DAYS LOWEST32 ON2