Waterloo Lake Weather Forecast
- 47
- 64
Increasing Clouds
- 56
- 66
Rain Showers
- 51
- 68
Rain Showers
- 41
- 67
Mostly Sunny
- 37
- 56
Mostly Sunny
- 40
- 57
Mostly Sunny
Today 22 Nov Grayson
Sunny, cooler with Highs in the mid 60s. Northwest Winds 5 to 10 Mph.
Tonight 22 Nov Grayson
Partly cloudy. Lows in the mid 40s. Northeast Winds around 5 Mph.
Waterloo Lake Temperature Statistics
November Temperature
Sherman/Denison, Grayson County Airport (5.6 miles)
Lowest 10 November, 2025
28.2 °FAverage November
61.6 °FHighest 18 November, 2025
87.8 °F
Climate (2020–Present)
Sherman/Denison, Grayson County Airport (5.6 miles)
Average Low 2020–2025
55.4 °FAverage 2020–2025
64.1 °FAverage High 2020–2025
76.3 °F