Winchester Weather Forecast
- 58
- 89
Chance Thunderstorms
- 57
- 78
Thunderstorms Likely
- 57
- 81
Chance Rain Showers
- 56
- 82
Chance Rain Showers
- 52
- 72
Chance Rain Showers
- 54
- 76
Partly Sunny
- 55
- 78
Partly Sunny
Today 31 Jul Lewis and Southern Nez Perce Counties
Hot. Partly cloudy with a chance of Showers and Thunderstorms. Some Thunderstorms may produce gusty Winds and small hail. Highs in the upper 80s to upper 90s. Northwest wind 5 to 15 Mph with Gusts up to 20 Mph. Chance of precipitation 20 percent.
Tonight 31 Jul Lewis and Southern Nez Perce Counties
Mostly cloudy. Showers and Thunderstorms likely in the Evening, then a chance of rain Showers overnight. Some Thunderstorms may produce small hail in the evening. Lows in the upper 50s to mid 60s. Gusts up to 20 Mph in the evening. Chance of precipitation 60 percent. Rainfall Amounts less than a quarter of an Inch, except higher Amounts possible in Thunderstorms.
Winchester Temperature Statistics
July Temperature
Lewiston, Lewiston-Nez Perce County Airport (20.5 miles)
Lowest 7 July, 2025
58.6 °FAverage July
80 °FHighest 8 July, 2025
104.6 °F
Climate (2020–Present)
Lewiston, Lewiston-Nez Perce County Airport (20.5 miles)
Average Low 2020–2025
45.4 °FAverage 2020–2025
55.4 °FAverage High 2020–2025
65.8 °F