Johnson Lake Weather Forecast
- 74
- 90
Chance Thunderstorms
- 74
- 89
Chance Thunderstorms
- 73
- 90
Chance Thunderstorms
- 75
- 91
Slight Chance Thunderstorms
- 74
- 93
Mostly Sunny
- 74
- 94
Mostly Sunny
- 74
- 95
Mostly Sunny
Today 6 Jul Washington
Mostly sunny with a chance of Showers and Thunderstorms. Near steady temperature in the upper 80s. South Winds around 5 Mph. Chance of rain 30 percent.
Tonight 6 Jul Washington
Partly cloudy. Lows in the mid 70s. South Winds around 5 Mph.
Johnson Lake Temperature Statistics
July Temperature
Brenham, Brenham Municipal Airport (6.2 miles)
Lowest 3 July, 2025
72 °FAverage July
80.2 °FHighest 2 July, 2025
95.2 °F
Climate (2020–Present)
Brenham, Brenham Municipal Airport (6.2 miles)
Average Low 2020–2025
60.6 °FAverage 2020–2025
70.3 °FAverage High 2020–2025
81.1 °F