London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Holborn 1920
Report for the year 1920 of the Medical Officer of Health
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TABLE XIII. Meteorology of London, 1920. (Deduced from observations at Greenwich under the superintendence of the Astronomer Royal.)
| 1920. | AIR TEMPERATURE. | BRIGHT SUNSHINE. | Rain and other forms of precipitation. | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Mean of— | Mean of A. & B. | Difference from Average.1 | Daily Mean. | Difference from Average.* | Per cent. of possible. | Total Fall. | Difference from Average.* | ||
| Maximum. A. | Minimum. R. | ||||||||
| °F | °F | °F | °F | hrs. | hrs. | % | m.m. | m.m. | |
| January | 47.4 | 37.0 | 42.2 | + 3.7 | 1.59 | + 0.35 | 19 | 58 | + 15 |
| February | 51.0 | 36.4 | 43.7 | + 4.0 | 3.03 | + 0.99 | 31 | 15 | -25 |
| March | 55.7 | 38.1 | 46.9 | + 4.4 | 4.21 | + 0.81 | 36 | 35 | -9 |
| April | 56.9 | 41.6 | 49.2 | + 1.6 | 2.56 | -2.46 | 19 | 68 | + 31 |
| May | 66.9 | 45.6 | 56.2 | + 2.2 | 7.20 | + 0.73 | 46 | 18 | -26 |
| June | 71.0 | 50.1 | 60.5 | + 0.6 | 7.18 | + 0.48 | 44 | 44 | -7 |
| July | 69.5 | 51.9 | 60.7 | -2.8 | 4.91 | -1.59 | 31 | 82 | +25 |
| August | 67.7 | 49.7 | 58.7 | -3.9 | 4.79 | +1.41 | 33 | 41 | -15 |
| September | 66.6 | 49.4 | 58.0 | 0.0 | 3.59 | -1.36 | 29 | 88 | + 43 |
| October | 61.0 | 43.1 | 52.0 | + 1.8 | 5.19 | + 2.07 | 49 | 28 | -36 |
| November | 50.5 | 36.8 | 43.7 | -0.3 | 2.34 | + 0.62 | 26 | 20 | -38 |
| December | 44.5 | 36.7 | 40.6 | + 0.4 | 0.88 | -0.18 | 11 | 49 | + 8 |
| Year | 59.1 | 43.0 | 51.0 | + 1.0 | 3.96 | -0.09 | 32 | 546 or 21.50 ins. | -50 orab't -2 ins. |
* The averages used are obtained from observations extending over 35 years (1881-1915).