METEOROLOGICAL 01',SERVATI0NS AT WISLEY IN 190n. 283 



Rain fell on IG days to the total depth of 1*10 in. 



(Equivalent to about 5| gallons of water per square yard.) 



Heaviest fall on any day 0-3G in. on the 20th 



The winds were most frequently from north and north-east and from south and 



south-west, but winds were recorded from every point. 

 The average velocity of the wind was G| miles per hour. 



There were 151-3 hours of bright sunshine, equal to 32 per cent, of the greatest 

 possible amount. There were 5 days on which no sunshine was recorded. 



June. — This was another exceptionally bright and sunny month, the 

 recorded amount of bright sunshine being in some parts of the kingdom 

 as much as 86 per cent, of the possible maximum. It was warmer than 

 the average over the northern parts of the kingdom, but notwithstanding 

 the unusual amount of sunshine it was cooler than usual in the south-east. 

 The rainfall was above the average over the southern half of the kingdom 

 but below it elsewhere. This excess was, however, chiefly due to a very 

 heavy and prolonged fall of rain at the close of the month, in which from 

 two to two and a half inches of rain fell in about eleven hours in the 

 south-east of England. 



Observations made at Wisley : 



Mean temperature of the air in shade 57°- 7 



Highest „ „ „ 80°-2 on the 23rd 



Lowest „ „ „ 34°-2 „ 5th 



Lowest ,, on the grass ... 26°-5 „ 5th 



At 1 ft. At 2 ft. At 4 ft. 

 deep. deep. deep. 



Mean temperature of the soil at 9 a.m 59°-4 o8°-G 54°-9 



Highest „ „ „ 65°-5 G2°-8 5S°-0 



Lowest „ „ „ ... 54°-7 54°-8 o2°-2 



Mean relative humidity of the air at 9 a.m. (complete saturation being 



represented by 100) 69% 



Rain fell on 8 days to the total depth of ... 2-16 ins, 



(Equivalent to about 10 gallons of water per square yard.) 



Heaviest fall on any day 1-26 in. on the 28th 



The prevailing winds were north-easterly. 



The average velocity of the wind was 4f miles per hour. 



There were 251-1 hours of bright sunshine, equal to 51 per cent, of the greatest 

 possible amount. There were no days on which sunshine was not recorded. 



July. — This was a month of quiet, seasonable weather, with more than 

 the average amount of sunshine and less than the normal fall of rain, but 

 with no very high temperatures such as are often experienced in July ; 

 indeed, in nearly all parts of the country the average temperature was 

 below the mean for the month. Several thunderstorms were experienced 

 in various parts of the country, and in some instances they were accom- 

 panied by somewhat heavy falls of rain. 



Observations made at Wisley : 



Mean temperature of the air in shade ... ... ... ... 62"*8 



Highest „ „ „ 83°-0 on the 30th 



Lowest „ „ „ 41°-2 „ 1st 



Lowest „ on the grass 37°-0 „ 21st 



At 1 ft. At 2 ft. At 4 ft. 



deep. deep, deep. 



Mean temperature of the soil at 9 a.m 63°-9 G2°-9 59°-4 



Highest „ „ „ 68°-l G5°-5 61°-2 



Lowest „ „ „ 59°-8 60°-2 57°-8 



