164 
County or Active 
Station District Open Close 1958 Notes 
Stratford Perth Sept 1882 June 1888 DB 
Sudbury Sudbury Nov 1944 Dec 1946 DB 
Toronto York Aug 1881 A Os 
Turbine Sudbury Jan 1921 A High Falls; DB 
Vineland Lincoln ‘ Feb 1915 A DB 
Walker's Point Muskoka Nov 1928 Nov 1934 DB 
Windsor Essex Sept 1882 Dec 1887 OSs 
Woodstock Oxford Nov 1881 A DB 
Index of Temperature and Precipitation Reporting Stations 
in the Province of Ontario 
1. Stations: This index contains the names of all the stations in the Province of Ontario which 
have reported temperature and precipitation data for a period of six months or longer. Where two 
or more names have been used for a station, the other names are shown in the remarks column, In 
most cases the most recent official station name is used, but in some instances where there is 
more than one station at a city or town, a differentiation is made in the station name to point 
out the different sites of the observation stations. However, usually no indication is given 
whether or not the station location has been changed ower the period of record. While some sta- 
tions will have continuous homogeneous records over a long period of years, other stations have 
been moved frequently with the result that the data may not be strictly homogeneous. 
2. County: Location of each station listed is restricted to the name of the county or district 
in which the station lies. Complete location information in the form of latitude and longitude 
coordinates and heights above sea level are given in the January issues of the Monthly Record. 
These indexes are available from 1916 to 1955 except for the even numbered years during the dec- 
ade of the 1940's. For stations in operation prior to 1916 an index with coordinates is shown 
in each issue of the Annual Report of the Meteorological Service of Canada. 
3. Period of Record: The first month where data are available in the Meteorological Headquar- 
ters abstracts is shown as the date on which the station opened. Similarly, the last month of 
record in the abstract is shown as the closed date. Where stations are in operation in July 
1958, the symbol A has been shown in the proper column. Breaks in the record of less than six 
months have not been indicated. However, where there are breaks of more than six months but 
less than a year, this fact has been entered in the remarks column. When the break is more than 
a year, the period of record is shown in two segments. 
4. Temperature: The temperature data referred to have been obtained from temperature observa- 
tions read from official thermometers in standard shelters. These shelters protect thermometers 
against radiation and weather and during the early part of the period were located on a north 
wall. However, for the past several decades at each station the thermometers have been housed 
in a Stevenson screen over a relatively level grassy surface with the bulbs of the thermometers 
about four feet above the surface of the ground. 
5. Precipitation: Precipitation data consists of rainfall data taken from official raingauge 
observations and snowfall data which are observed as the snow lies on the ground. The top of 
the raingauge is usually located one foot above a level grassy surface. In reducing snowfall 
data to the water equivalent, a ten to one arbitrary relationship is assumed, that is, the equi- 
valent of ten inches of snow is taken to be one inch of water. 
6. Classification of Station: All stations should be considered as having both temperature 
extremes and precipitation data except those marked with a capital P in the proper column. Some- 
times a station started as a “precipitation only" station and then at a later date became a tem- 
perature reporting station. This fact is noted in the remarks column. Further information on 
"summer only" stations and other notes of value to the user of the data will be found in this 
column, For explanation of the symbols OS, DB, DB*, and Out, see the introductory remarks on 
page 160. 
