Johnson Lake Weather Forecast
- 40
- 52
Chance Rain
- 40
- 56
Mostly Sunny
- 40
- 56
Rain Likely
- 38
- 52
Rain Likely
- 40
- 44
Rain
- 37
- 41
Chance Rain/Snow
Today 17 Dec Yosemite NP outside of the valley
Partly sunny until late afternoon then clearing. Rain Showers likely and slight chance of Thunderstorms early in the morning. Chance of snow in the morning. Chance of rain in the late morning and afternoon. Little or no snow accumulation. Snow level above 8000 feet. Highs 46 to 58. West Winds up to 15 Mph. Gusts up to 50 Mph decreasing to 40 Mph in the afternoon. Chance of precipitation 70 percent.
Tonight 17 Dec Yosemite NP outside of the valley
Mostly clear. Lows 28 to 40. North Winds up to 10 Mph with Gusts to around 25 Mph.
Johnson Lake Temperature Statistics
December Temperature
Mammoth Yosemite Airport (36.7 miles)
Lowest 4 December, 2025
10.4 °FAverage December
35.2 °FHighest 11 December, 2025
66.2 °F
Climate (2020–Present)
Mammoth Yosemite Airport (36.7 miles)
Average Low 2020–2025
29.6 °FAverage 2020–2025
46 °FAverage High 2020–2025
60.9 °F