154 METEOROLOGICAL OBSERVATIONS AT CLIFTON. 



5*51°. In the very beginning of this month there com- 

 menced the long period of exceptionally warm weather 

 which will long make the year 1893 memorable meteoro- 

 logically. The mean daily temperature fell below its 

 normal value on only one day — the 19th. From the 18th of 

 this month till the 11th of April the daily range of tempera- 

 ture was very great, amounting on the average to about 

 25° or more between day and night temperature. This was 

 due to the prevalence of an anti-cyclonic system with 

 easterly and northerly winds. The highest temperature 

 recorded was 65-8° on the 29th, and the lowest 25*6° on the 

 19th. There was frost on the ground on 10 days. 



April. — In this month the excess of temperature was 

 more marked than in any other, amounting to nearly 7° — 

 53-69° against 4671°. This high temperature was most 

 noticeable in the latter half of the month. The highest 

 temperature recorded was 79'5° on the 21st, and the lowest 

 307° on the 14th. This latter was the only occasion on 

 Avhich the ground temperature fell as low as freezing point. 

 As in March, the difference between day and night tempera- 

 tures was very great, being as much as 29° on the 25th. 



May. — The mean temperature for this month was 57*50°, 

 as compared with the normal value, 52*38°, thus showing an 

 excess of 512°. The mean daily temperature never once fell 

 below the normal ; but the highest temperature recorded 

 fell short of the maximum for April, being 78*3° on the 

 5th. The lowest temperature on the ground was 392° on 

 the 8th, the lowest air temperature being 40*8° on the same 

 day. 



JpNE. — The mean temperature was 62*37°, as compared 

 with the normal value of 58'9&°. The mean daily tempera- 

 ture fell slightly below the normal on three days. The 

 hottest period extended from the 13th till the 21st, and the 



