TABLE No. 49.—Meteorological Register kept at Perth, Western Australia, for the Years 1867, 1868, and 1869.
| 1867. |
JANUARY. |
FEBRUARY. |
MARCH. |
APRIL. |
MAY. |
JUNE. |
JULY. |
AUGUST. |
SEPTEMBER. |
OCTOBER. |
NOVEMBER. |
DECEMBER. |
Mean of the 12 Months. |
| BAROMETER. |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Maximum |
30.29 |
30.14 |
30.27 |
30.27 |
30.19 |
30.35 |
30.37 |
30.36 |
30.21 |
30.21 |
30.21 |
30.20 |
30.26 |
| Minimum |
29.82 |
29.75 |
29.80 |
29.89 |
29.68 |
29.69 |
29.67 |
29.59 |
29.50 |
29.65 |
29.79 |
29.77 |
29.72 |
| Mean |
30.02 |
29.95 |
30.07 |
30.10 |
30.07 |
30.09 |
30.02 |
30.06 |
29.90 |
29.97 |
30.08 |
30.01 |
30.03 |
| Range |
0.47 |
0.39 |
0.47 |
0.38 |
0.51 |
0.66 |
0.70 |
0.77 |
0.71 |
0.56 |
0.52 |
0.43 |
0.55 |
| THERMOMETER (IN THE SHADE.) |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Maximum Temperature at 7h. a.m. |
83.0 |
85.0 |
74.0 |
70.0 |
69.0 |
61.0 |
63.0 |
64.0 |
61.0 |
69.0 |
73.0 |
73.0 |
70.8 |
| Maximum Temperature at noon |
100.0 |
101.0 |
91.0 |
86.0 |
86.0 |
69.0 |
69.0 |
76.0 |
74.0 |
74.0 |
97.0 |
95.0 |
84.8 |
| Maximum Temperature at 4h. 30m. p.m. |
96.0 |
92.0 |
87.0 |
82.0 |
79.0 |
66.0 |
66.0 |
69.0 |
70.0 |
70.0 |
95.0 |
90.0 |
80.1 |
| Minimum Temperature at 7h. a.m. |
61.0 |
67.0 |
57.0 |
52.0 |
45.0 |
40.0 |
40.0 |
46.0 |
48.0 |
52.0 |
58.0 |
64.0 |
52.5 |
| Minimum Temperature at noon |
70.0 |
71.0 |
64.0 |
64.0 |
57.0 |
57.0 |
55.0 |
57.0 |
56.0 |
62.0 |
64.0 |
72.0 |
62.4 |
| Minimum Temperature at 4h. 30m. p.m. |
70.0 |
70.0 |
63.0 |
65.0 |
55.0 |
56.0 |
52.0 |
55.0 |
56.0 |
61.0 |
65.0 |
70.0 |
61.5 |
| Mean Temperature at 7h. a.m. |
72.2 |
73.1 |
64.4 |
61.7 |
55.3 |
54.0 |
50.9 |
54.2 |
55.9 |
59.9 |
66.7 |
69.6 |
61.5 |
| Mean Temperature at noon |
84.1 |
85.3 |
79.2 |
74.9 |
71.2 |
63.3 |
63.2 |
67.5 |
65.7 |
68.2 |
78.4 |
82.7 |
73.6 |
| Mean Temperature at 4h. 30m. p.m. |
79.8 |
81.0 |
76.7 |
72.3 |
66.2 |
61.0 |
59.2 |
64.4 |
62.1 |
64.9 |
74.3 |
78.6 |
70.0 |
| Mean daily Temperature |
78.7 |
79.8 |
74.1 |
69.6 |
64.2 |
59.4 |
57.8 |
62.0 |
61.2 |
64.3 |
73.1 |
76.9 |
68.4 |
| Minimum Temperature at night |
55.0 |
63.0 |
55.0 |
49.0 |
45.0 |
39.0 |
38.0 |
43.0 |
46.0 |
45.0 |
50.0 |
58.0 |
48.8 |
| Approximate mean day and night Temperature |
72.7 |
74.1 |
67.2 |
59.0 |
58.9 |
55.3 |
52.9 |
56.6 |
57.2 |
58.8 |
66.4 |
73.8 |
62.7 |
| HYGROMETER (DRY AND WET BULB THERMOMETERS.) |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Maximum Temperature of the Dew-point at 7h. a.m. |
73.6 |
76.0 |
67.2 |
63.0 |
67.0 |
58.1 |
62.0 |
62.2 |
57.3 |
67.2 |
66.5 |
73.3 |
66.1 |
| Maximum Temperature of the Dew-point at noon |
80.3 |
77.0 |
78.2 |
72.3 |
69.2 |
65.4 |
63.4 |
69.9 |
64.2 |
65.5 |
69.9 |
83.2 |
71.5 |
| Maximum Temperature of the Dew-point at 4h. 30m. p.m. |
75.9 |
76.0 |
76.6 |
73.6 |
66.0 |
62.4 |
60.2 |
64.4 |
62.0 |
62.4 |
70.7 |
73.3 |
68.4 |
| Minimum Temperature of Dew-point at 7h. a.m. |
53.5 |
54.8 |
46.6 |
47.0 |
45.0 |
37.4 |
35.4 |
42.8 |
42.8 |
46.1 |
51.9 |
53.4 |
46.4 |
| Minimum Temperature of Dew-point at noon |
54.5 |
55.2 |
52.8 |
56.7 |
51.9 |
51.4 |
43.2 |
Illegible
|
49.0 |
50.8 |
54.1 |
60.1 |
52.2 |
| Minimum Temperature of Dew-point at 4h. 30m. p.m. |
54.8 |
63.2 |
54.1 |
54.1 |
51.8 |
49.8 |
43.9 |
50.3 |
48.7 |
48.2 |
57.7 |
59.4 |
53.0 |
| Mean Temperature of Dew-point at 7h. a.m. |
62.9 |
64.8 |
60.2 |
57.0 |
52.0 |
51.5 |
48.1 |
51.3 |
51.2 |
55.3 |
58.9 |
62.5 |
56.3 |
| Mean Temperature of Dew-point at noon |
68.1 |
69.6 |
66.1 |
62.4 |
59.0 |
56.0 |
53.4 |
56.7 |
56.3 |
58.0 |
63.4 |
68.9 |
61.5 |
| Mean Temperature of Dew-point at 4h. 30m. p.m. |
67.4 |
68.2 |
66.0 |
62.7 |
56.3 |
55.6 |
53.8 |
56.3 |
55.1 |
56.5 |
63.7 |
67.6 |
60.8 |
| Mean daily Temperature of the Dew Point |
66.1 |
67.5 |
64.1 |
60.7 |
55.8 |
54.4 |
52.4 |
54.8 |
54.2 |
56.6 |
62.0 |
66.3 |
59.5 |
| HUMIDITY. |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Maximum degree of Humidity (complete saturation being equal to 1.00) |
0.94 |
0.94 |
1.00 |
1.00 |
1.00 |
1.00 |
1.00 |
1.00 |
1.00 |
1.00 |
0.94 |
0.94 |
0.96 |
| Minimum degree of Humidity (complete saturation being equal to 1.00) |
0.28 |
0.38 |
0.52 |
0.51 |
0.42 |
0.60 |
0.53 |
0.42 |
0.53 |
0.57 |
0.37 |
0.44 |
0.46 |
| Mean degree of Humidity (complete saturation being equal to 1.00) |
0.66 |
0.67 |
0.70 |
0.74 |
0.76 |
0.84 |
0.81 |
0.80 |
0.79 |
0.76 |
0.69 |
0.69 |
0.74 |