OF 1906 IN HERTFORDSHIRE. 235 



than usual and the days rather warmer. On several days the 

 range of temperature exceeded 30°, and on the 11th, at 

 St. Albans, it reached 35-5°. The first half of the month was 

 much warmer than the second half. Three days, the 11th, 12th, 

 and 13tli, were exceptionally warm, their mean temperature at 

 St. Albans being respectively 53-7°, 55-5°, and 55-4°, and their 

 maximum 71-6°, 71'5°, and 68"7°. The temperature at 9 a.m. on 

 the 12th was 58-8°, and on the 13th 57'8°. The minimum was 

 below 32° on about a quarter the number of days in the month. 

 A little snow fell on a few days towards the end of the month, 

 the heaviest fall being on the 23rd, on which day the Eev. C. W. 

 Harvey reports the depth at Throcking Rectory as 3 inches. 

 The 22nd was the wettest day at one station, the 23rd at 

 8 stations, the 27th at 40, and the 30th at 5. A thunderstorm 

 on the 12th is reported from Odsey, with very little rain. 



May. — Of about average temperature and humidity, with 

 a very cloudy sky, and a rather small rainfall, but on a large 

 number of days. The mean daily range of temperature was 

 unusually small, the nights being warmer and the days colder 

 than usual. On the 1st only was the minimum below 32 ^ The 

 temperature was very variable throughout the month. On three 

 days the maximum was unusually high: the 8th, 74-0°, the 13th, 

 72*0°, and the 28th, 71-0° (at St. Ail)ans). There was a severe 

 but very local thunderstorm on the 8th, between Watford and 

 St. Albans and in their neighbourhood.* This was the wettest 

 day at one station (Bone Hill, St. Albans), the 20th was the 

 wettest at 35 stations, the 26th at 12, the 30th at 2, the 20th 

 and 26th were the wettest at 3 stations, and the 26tli and 30th 

 were the wettest at one station. 



June. — Eather cold, with a dry atmosphere, a sky of average 

 brightness, and a heavy rainfall, but on a small number of days. 

 The mean daily range of temperature was considerable, the 

 nights being colder in relation to the average than were the days. 

 On the 5th and the 7tli there were frosts on the ground, and on 

 the latter day the range in shade-temperature was as much as 

 33"5°. The 10 days ended 28th were very warm ; the last two 

 days were cold. There was a thunderstorm on the 1st with 

 nearly half an inch of rain at some stations, and another on 

 23rd, apparently local, being recorded only at Weetwood, 

 Watford, vnth very little rain. The 28tli was the wettest day 

 at all stations, the rainfall at every one exceeding an inch. In 

 the Gam river-district it was 2'06 ins. at Royston, and 2"08 ins. 

 at Odsey. In the Ivel, 243 ins. at Baldock, 246 ins. at High 

 Down, Hitchin, 2'64ins. at Preston, 2'65ins. at The Maples, 

 Hitchin, and 2'69 ins. at Wratten, Hitchin, and at The 

 Chilterns, Hitchin. In the Thame, 2'21 ins. at our only station, 



* Local iu Hertfordshire, but in the Thames Valley, from Reading to London, 

 it was heavy, with much rain in places. See 'Meteorological Magazine,' vol. xli, 

 p. 65, and ' British Rainfall,' 1906, p. 9. 



