METEOROLOGICAL. TABLES. 

 MONTHLY METEOROLOGICAL SUMMARY, LANSING, MICHIGAN, JULY, 1921. 



137 



Barometer — Mean, 29.98 inches; highest, 30.16 inches, on 22d; lowest, 29.66 inches, on 30th. 



TEMPERATnRE— Highest, 97°, on 4th; lowest. 53°, on 21st.; greatest daily range, 32°, on 22d; least daily range, 15°, on 27th; 

 normal temperature, 70.9°; departure, +6.1°; a-oumulated departure since January 1, +1208°; average daily departure since 

 Ja-uary 1, +5.7° highest in 36 years, 102°; Itt ^t, 37°. 



Precipitation (in inches) — Total this mont'i, 2. 'A; normal, 3.22; departure, —0.61; since January 1st, —3.13; greatest amount 

 in 24 hours, 1.00, on 6th; total snowfall, 0.0 in. 



Wind — Prevailing direction, southwest; total movement, 2,711 miles; average hourly velocity, 3.6 miles; maximum velocity. 

 32 miles per hour, from northwest in 14th. 



Dates of— Auroras. 0; hail, 0; sleet, 0; fog— iense, 0; thunderstorms, 4, 5, 6, 7, 8, 14, 18, 26, 27, 28, 30; hales— solar, 25; 

 halos — lunar, 0; frost — kilHng, 0; heavy, 0; light.O. 



DEWEY A. SEELEY. 



Meteorologist. 



