Sierra Vista Weather Forecast
- 49
- 69
Chance Thunderstorms
- 49
- 67
Rain Showers Likely
- 51
- 73
Thunderstorms
- 53
- 75
Mostly Sunny
- 48
- 75
Slight Chance Thunderstorms
- 47
- 70
Mostly Sunny
- 48
- 73
Mostly Sunny
Today 18 Sep South Central Mountains
Partly cloudy. Isolated Showers this Morning, then scattered Showers and Thunderstorms this afternoon. Some Thunderstorms may produce heavy rainfall this afternoon. Highs in the lower 70s. Chance of rain 50 percent.
Tonight 18 Sep South Central Mountains
Isolated Thunderstorms this evening. Partly cloudy with isolated Showers. Lows in the lower 50s. Chance of rain 20 percent.
Sierra Vista Temperature Statistics
September Temperature
Sierra Blanca Regional Airport (9.9 miles)
Lowest 7 September, 2025
50 °FAverage September
63.8 °FHighest 8 September, 2025
82.4 °F
Climate (2020–Present)
Sierra Blanca Regional Airport (9.9 miles)
Average Low 2020–2025
43 °FAverage 2020–2025
53.9 °FAverage High 2020–2025
65.2 °F