7 A.M.2 P.M.9 P.M.Average.Lowest deg.Highest deg.
Nov. 13 to 30,41°47°41°43°31°58°
December,22 29 25 25 2 50
January,30 31 30 30 10 58
February,29 39 31 33 8 58
Prevailing winds, S. W. and N. W.
Observations on Lake and River St. Clair, Michigan.
1820.6 A.M.8 A.M.12 M.2 P.M.6 P.M.8 P.M.REMARKS.
May 24,............... 51°
" 25, 47° 56° 56°... 46°...Clear. Wind N. W.
" 27,...5253 56°45...Clear. Wind N. W.
" 27,...5455......44Clear. Wind N. W.
Temperature of the Water of Lake and River St. Clair.
May 25, at 6 A. M., 49°at 12 M., 54°
" 26,at 8 A. M., 55at 2 P. M., 55
" 27,at 8 A. M., 54at 12 M., 55at 8 P. M., 50°
Observations on Lake Huron.
5
A.
M.
°		6
A.
M.
°		8
A.
M.
°		9
A.
M.
°		11
A.
M.
°		12
M.
°		1
P.
M.
°		2
P.
M.
°		3
P.
M.
°		5
P.
M.
°		6
P.
M.
°		7
P.
M.
°		8
P.
M.
°		A
v
e
rt
ae
gm
ep.		REMARKS.
May 28....54....53............4151Clear. Wind N. W.
" 29....44........70....53....55Clear in the morning; in the afternoon high wind from N. W. with thunder and lightning.
" 30....46....53..........48..49Clear. Wind high; N. W.
" 31......54....55..54....48..53
June 146....5761............54..54
" 2..........55..........50.. 5½
" 3..50..........61......47..52½
" 4..52..51..........49..45..49Cloudy, with rain. Wind strong; N. W.
" 5..48......57........44....49½Flying clouds. Wind strong; N. W.
" 6....49....57........46....50½Clear. Wind Strong; N. W.
516/10Average temperature of the air.

Water at Lake Huron.
Average.
May 28,at 5 A.M., 55°at 12 A.M., 58°at 7 P.M., 56°56°
" 29,at 7 A.M., 54 at 12 A.M., 60 at 7 P.M., 63 59
June 1,at 5 A.M., 42at 11 A.M., 52at 7 P.M., 4440
" 3,at 6 A.M., 46at 2 P.M., 56at 8 P.M., 4647
" 6,at 8 A.M., 50at 12 A.M., 52at 6 P.M., 4950½
Observations at Michilimackinac and on the Straits of St. Mary's.
1
8
2
0.		6
A.
M.		8
A.
M.		9
A.
M.		1
P.
M.		3
P.
M.		7
P.
M.		9
P.
M.		A
v
e
r
a
g
e.		W
E
A
T
H
E
R.		W
I
N
D.
June 7...... 59° 61°...... 59°59½Clear.W. N. W.
" 8......59... 64°...5960Clear.W. N. W.
" 9......53...... 53°...52½Cloudy with rain.
" 10... 55°......60...5456Cloudy with rain.W.
" 11...52......54...5152Clear.S. E.
" 12...54...55......5253Clear.S. E.
" 13 53°......63......5858Fair.S. W.
" 1455......73......5761Cloudy.S. W.
" 15...66......6862...65Clear.S. W.St. Mary's
" 16...527082...66...69Clear.S. W.
" 17...58......82...7874Clear.S. W.
" 1856......76......6866Cloudy; rain.N. W.

The chief conclusion to be drawn, is the extreme fluctuations of winds and temperatures, in these exposed positions on the open lakes.

Observations on Lake Superior.
1
8
2
0.		4
A.
M.		5
A.
M.		6
A.
M.		7
A.
M.		8
A.
M.		9
A.
M.		10
A.
M.		11
A.
M.		12
P.
M.		1
P.
M.		2
P.
M.		3
P.
M.		4
P.
M.		5
P.
M.		6
P.
M.		7
P.
M.		8
P.
M.		9
P.
M.		10
P.
M.		A
v
e
r
a
g
e.		R
E
M
A
R
K
S.
June 19....64............78........72........70½Stormy and rain. Wind N. W.
" 20..72............75........6871........71½Stormy and rain. Wind N. W. Hurricane at night.
" 21............65..............70....50..62Calm.
" 22....55................63......49......55½Clear. Wind light from N. W.
" 23..65............68..................7067½Clear. Wind S. E.
" 24........58......74..........6063......63Clear. High wind, N. W.
" 25......60......62....76............53..62½Clear. Wind N. W.
" 26..........69........83..........68....73Rainy. Wind W. N. W.
" 27........68..........71......69........69Clear. Wind E. N. E. (Fair!)
" 28........74........91........74........79½Sky clear. Wind N. W.
" 29........79........94..........86......88Clear. Wind N. W.
" 30..........76....84..............60....73Clear. Wind N. W.
July 154......61..........75..80..68........67½Misty. Wind light at N. N. W.
" 270..........75......76......65..65....70Clear. Wind W. S. W.
" 3....70................66....52..61....65Cloudy, mist, and rain. Wind S. S. W.
" 4......57..61.......................... Wind S. S. W.