| Observations made at Buffalo, N. Y. | |||
|---|---|---|---|
| 1820. | 8 A.M. | 2 P.M. | REMARKS. |
| April 30 | 43° | 60° | Clear. |
| May 1 | 49 | 64 | Clear. |
| " 2 | 45 | 63 | Clear. |
| " 3 | 44 | 65 | Clear. |
| " 4 | 46 | 79 | Cloudy. |
| " 5 | 40 | 68 | Cloudy, with rain. |
| " 6 | 44 | ... | Cloudy. |
These places are but ninety miles apart, yet such is the influence of the lake winds on the temperature of the latter position, that it denotes an atmospheric depression of temperature of 5°. At the same time, the range between the maximum and minimum was exactly the same.
| Observations made at Detroit. | |||||
|---|---|---|---|---|---|
| 1820. | 8 A.M. | 12 M. | 6 P.M. | REMARKS. | WIND. |
| May 15, | 50° | 61° | 51° | Fair. | N. E. |
| " 16, | 49 | 62 | 50 | Fair. | N. E. |
| " 17, | 50 | 64 | 51 | Fair. | N. E. |
| " 18, | 52 | 64 | 60 | Fair. | N. E. |
| " 19, | 60 | 68 | 60 | Fair. | N. E. |
| " 20, | 64 | 68 | 63 | Fair. | N. E. |
| " 21, | 67 | 82 | 66 | Fair. | S. W. |
| " 22, | 64 | 88 | 82 | Fair. | S. W. |
| " 23, | 72 | 84 | 76 | Cloudy, some rain | W. N. W. |
| " 24, | 53 | 64 | ... | Cloudy. | N. W. |
The average temperature of this place for May is denoted to be some five or six degrees higher while the wind remained at N.E., but on its changing to S.W. (on the 21st), the temperature ran up four degrees at once. As soon as it changed to N.W. (on the 24th), the thermometer fell from its range on the 21st fourteen degrees.
The uncommon beauty and serenity of the Michigan autumns, and the mildness of its winters, have often been the subject of remark. By a diary of the weather kept by a gentleman in Detroit, in the summer and fall of 1816, from the 24th of July to the 22d of October, making eighty-nine days, it appears that
- 57 were fair,
- 12 cloudy, and
- 20 showery and rainy.
By a diary kept at the garrison of Detroit (Fort Shelby), agreeable to orders from the War Department, from the 15th of Nov. 1818, to the 28th of Feb. 1819, making 105 days,
- 40 of them are marked "clear,"
- 40 "cloudy,"
- 13 "clear and cloudy," and
- 12 "cloudy, with rain or snow."
By Fahrenheit's thermometer, kept at the same place, and under the same direction, it appears that the medium temperature of the atmosphere was agreeable to the following statement:—