Winthrop Weather Forecast
- 53
- 82
Rain Showers Likely
- 53
- 83
Partly Sunny
- 51
- 81
Rain Showers Likely
- 53
- 84
Partly Sunny
- 55
- 87
Mostly Cloudy
- 55
- 88
Slight Chance Rain Showers
- 54
- 86
Partly Sunny
Today 12 Aug Western Okanogan County
Rain Showers likely and a chance of Thunderstorms. Haze and Areas of smoke. Highs in the upper 70s to mid 80s. Chance of precipitation 70 percent. Rainfall Amounts less than a quarter of an Inch, except higher Amounts possible in Thunderstorms.
Tonight 12 Aug Western Okanogan County
Mostly cloudy. Rain Showers likely and a chance of Thunderstorms in the Evening, then a chance of rain Showers overnight. Areas of smoke. Lows in the lower 50s to lower 60s. Gusts up to 35 Mph in the evening. In the Mountains, Gusts up to 20 Mph. Chance of precipitation 70 percent. Rainfall Amounts less than a quarter of an Inch, except higher Amounts possible in Thunderstorms.
Winthrop Temperature Statistics
August Temperature
Omak Airport (30.4 miles)
Lowest 3 August, 2026
50.6 °FAverage August
72.5 °FHighest 6 August, 2026
95.6 °F
Climate (2021–2026)
Omak Airport (30.4 miles)
Average Low 2021–2026
40.8 °FAverage 2021–2026
51.8 °FAverage High 2021–2026
62.9 °F