OF 1910 IN' HERTFORDSHIRE. 
257 
of temperature being less than usual. The air was of average 
humidity and the sky rather cloudy. The rainfall was below 
the average but more frequent than usual. 
The summer (June to August) was cold, although the nights 
were warmer than usual, the days being very cold and the mean 
daily range of temperature very small. The air was very humid 
and the sky very cloudy. The rainfall was rather heavy and 
there were more wet days than usual. 
The autumn (Sept, to Nov.) was cold, both days and nights 
being cold, and the mean daily range of temperature was only 
slightly below the average. The humidity of the air was about 
the average and the sky was rather cloudy. The rainfall was 
rather small and fell on much fewer days than usual. 
Table III.— Means of Climatological Observations (with Extremes 
of Temperature ) for the Seasons of 1909-1910. „ 
Seasons 
Temperature of the Air 
Humidity 
Cloud, 0-10 
Rain 
Means 
j Extremes 
Amount 
Days 
Mean 
Min. 
Max. 
Range 
Min. 
Max. 
O 
O 
° 
O 
O 
O 
°/o 
ins. 
Winter ... 
39'3 
33-8 
44-8 
11*0 
16*2 
55'3 
90 
7*i 
7*89 
62 
Spring .. 
46-9 
38-8 
55*i 
16-3 
22 ’O 
77*3 
78 
7*i 
4*97 
47 
Summer. 
59-i 
Si-3 
67-0 
157 
41 ’I 
8i*i 
78 
8-o 
7-60 
43 
Autumn. 
48*3 
41*4 
55 '2 
13-8 
I9-8 
74*4 
87 
7*5 
6‘46 
38 
There was one absolute drought (more than 14 days without 
rain) lasting for 15 days, March 20 to April 3, at 47 stations, 
and for 16 days, March 19 to April 3, at 44 of these, being 
broken at 7 stations only by a fall of O’Ol in. on 26th March. 
There was no partial drought (a period of more than 28 days 
with less than 0 01 in. of rain per day) at any station. 
The maximum rainfall on any one day in each month, and the 
station recording it, was: Jan. 27, Cowroast Lock, 0‘72 in. ; 
Feb. 14, Church Croft, Hemel Hempstead, 0‘78 in. ; March 10, 
Croxley Green, 0*60 in. ; April 16, Odsey, 0'89in.; May 17, 
Earlshill House, Eoyston, and 18, Bayfordbury, 0 - 57 in. ; 
June 9, Bayfordbury, 2T3 ins.; July 5, Grove Lodge and 
Cowroast, Tring, 0*71 in.; August 5, Croxley Green, L98 in.; 
Sept. 13, Willian, 0'65 in.; Oct. 11, Northwood, 162 in. ; 
Nov. 27, Church Croft, Hemel Hempstead, 116 in. ; Dec. 14, 
at the same station, 0’89 in. 
The day in each month on which a heavy fall of rain was 
most general over the county, was: Jan. 27, Feb. 14, March 9, 
April 16, May 17, June 10, July 5, August 5, Sept. 13, Oct. 11, 
Nov. 27, Dec. 15 ; and in the year, Nov. 27. 
The rainfall reached at least one inch in 24 hours ending 
9 a.m. on six occasions during the year: twice in June, twice in 
August, once in October, and once in November. There are in 
