|
Typical McKinney December Weather 1991–2020 |
||
|---|---|---|
| Average daily high | 57.5 °F | |
| Average daily low | 35.8 °F | |
| Average monthly precipitation | 3.3 inches | |
| Daily chance of precipitation | 22.2% | |
|
McKinney December Weather Records 1903–2024 |
||
|---|---|---|
| Highest temperature | 89 °F | December 24, 1955 |
| Lowest temperature | -4 °F | December 23, 1989 |
| Highest daily low | 68 °F | December 15, 2021 |
| Lowest daily high | 15 °F | December 22, 1990 |
| Hottest average high temperature | 70.9 °F | 2021 |
| Coldest average high temperature | 43.5 °F | 1983 |
| Most daily precipitation | 3.5 inches | December 10, 1971 |
| Most monthly precipitation | 9.1 inches | 1971 |
| Day | Average (°F) | Record (°F) | ||
|---|---|---|---|---|
| High | Low | High | Low | |
| December 1 | 61.5 | 39.1 | 80 | 21 |
| December 2 | 61.2 | 38.8 | 81 | 19 |
| December 3 | 60.9 | 38.5 | 86 | 15 |
| December 4 | 60.5 | 38.2 | 80 | 18 |
| December 5 | 60.1 | 38.0 | 80 | 21 |
| December 6 | 59.8 | 37.7 | 81 | 9 |
| December 7 | 59.6 | 37.5 | 81 | 6 |
| December 8 | 59.3 | 37.2 | 80 | 11 |
| December 9 | 59.1 | 37.0 | 82 | 6 |
| December 10 | 58.8 | 36.7 | 82 | 12 |
| December 11 | 58.4 | 36.4 | 78 | 16 |
| December 12 | 58.2 | 36.2 | 85 | 16 |
| December 13 | 58.0 | 36.0 | 82 | 16 |
| December 14 | 57.8 | 35.9 | 83 | 12 |
| December 15 | 57.6 | 35.8 | 80 | 12 |
| December 16 | 57.5 | 35.8 | 81 | 10 |
| December 17 | 57.2 | 35.6 | 78 | 6 |
| December 18 | 56.9 | 35.4 | 79 | 12 |
| December 19 | 56.6 | 35.2 | 76 | 6 |
| December 20 | 56.6 | 35.0 | 76 | 7 |
| December 21 | 56.5 | 34.9 | 82 | 7 |
| December 22 | 56.4 | 34.7 | 77 | 4 |
| December 23 | 56.3 | 34.6 | 80 | -4 |
| December 24 | 56.1 | 34.5 | 89 | 2 |
| December 25 | 56.1 | 34.4 | 81 | 4 |
| December 26 | 56.0 | 34.4 | 79 | 2 |
| December 27 | 55.9 | 34.3 | 80 | 19 |
| December 28 | 55.9 | 34.2 | 80 | 6 |
| December 29 | 55.8 | 34.2 | 80 | 8 |
| December 30 | 55.7 | 34.0 | 85 | 3 |
| December 31 | 55.7 | 33.9 | 83 | 10 |