117 The Agricultural Economy of the American Bottoms 
TABLE 5° 
GENERAL CLIMATIC AND WEATHER DATA FOR ST. LOUIS, MO. 
STEAL PEI cede nd tie ten na enawen neva beenundes 39.55 inches 
Smallest amount of precipitation for a year (1930).................... 23.23 inches 
Largest amount of precipitation for a year (1858)..................4. 68.83 inches 
ee i ee re .00° F. 
Lowest average annual temperature (1875).............. 00 cece ee eeee 52.80" F. 
Highest average annual temperature (1922).................02-00005- 60.10° F. 
Average date of last llling frost in spring... . 2... 06456665200. 0000045 
Earliest date of last killing frost in spring ee ee eee ree Feb. 27, 1878 
Latest date of last killing frost in spring....................0eeeeeues May 22, 1883 
Average date of first killing frost in autumn... ... 0.6. 66.0.00000000805 et. 
Earliest date of first killing frost in autumn....................2.004- Sept. 30, 1899 
Latest date of first killing frost in autumn...................0000000- Nov. 28, 1902 
Average length af growing season. ....... 00 ciscesssesvnueseteseueens 209 days 
Shortest growing season on record (1875)........... 2.000 eee eee ee eaes 163 days 
Longest growiig season on record (19272)........... 0.60 .+<ccasousseenes 253 days 
*Data compiled from Revised Bulletin W, United States a Bureau (Wash- 
nd 2 
ington: Government Printing Office, 1935), pp. 6, 15, 20, a 
Months for 1933 
Inches - - ~ - - - : : 
aS a > oO b> oO yp » > 8 
(e) oO 
s e = a = 5 3 be . os s 6 
5 KF ” 
ae 
(ore \ 
a 
en imi 
— f_--b.\ A. 
, = cs aa iw iN >< = =.) 
4. Lae irs aw i ie"! 
: ror 7 Vs. 
“ayer 4 
Precipitation during 1933 ———————-Normalgs..........--- 
Fic. 20—Monthly precipitation for St. Louis (1933) Tf 
tn sl ee ee 
tRoscoe Nunn, Annual Meteorological Summary for St. Louis, Mo., U. S. Depart- 
ment of Aaccalvuce oe Louis: Weather Bureau, 1934), pp. 3 and 
