Washington Weather Forecast
- 75
- 93
Chance Thunderstorms
- 76
- 94
Chance Thunderstorms
- 75
- 95
Slight Chance Thunderstorms
- 75
- 94
Slight Chance Thunderstorms
- 75
- 94
Partly Sunny
- 75
- 94
Slight Chance Thunderstorms
Today 10 Sep Washington
Partly sunny. A slight chance of Showers and Thunderstorms in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Highs in the lower 90s. South Winds around 5 Mph. Chance of rain 40 percent.
Tonight 10 Sep Washington
Mostly cloudy with a chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Lows in the mid 70s. South Winds around 5 Mph. Chance of rain 30 percent.
Washington Temperature Statistics
September Temperature
Brenham, Brenham Municipal Airport (14.3 miles)
Lowest 5 September, 2026
74.3 °FAverage September
83.4 °FHighest 2 September, 2026
100 °F
Climate (2021–2026)
Brenham, Brenham Municipal Airport (14.3 miles)
Average Low 2021–2026
60.9 °FAverage 2021–2026
70.7 °FAverage High 2021–2026
81.7 °F